JP6158955B2 - Power source control device - Google Patents

Description

  The present invention relates to a power source control device that controls a power source of a vehicle.

Patent Document 1 discloses an engine restart control device (power source control device) configured to detect a depression amount of a clutch pedal by two clutch switches (a first clutch switch and a second clutch switch). (See Example 1). This restart control device detects that the clutch pedal has been depressed to a position where a half-clutch state is reached by a signal input from the first clutch switch. Further, the restart control device detects that the clutch pedal has been fully depressed by a signal input from the second clutch switch.
The restart control device restarts the engine when it is detected that the clutch pedal is fully depressed. Further, the restart control device detects that the clutch pedal has been depressed to a position where a half-clutch state is reached, and restarts the engine when the transmission range is neutral (neutral range).

  Patent Document 1 also describes a restart control device that detects a depression position of a clutch pedal by a signal input from a clutch stroke sensor (see Example 2). In this restart control device, when the depression position of the clutch pedal exceeds the first threshold value and the transmission range is the neutral range, or the depression position of the clutch pedal reaches the second threshold value. Restart engine when exceeded.

JP 2011-106280 A

  The 2nd clutch switch described in Example 1 of patent documents 1 is arranged so that it may be in an ON state when the clutch pedal is fully depressed. Further, the first clutch switch is disposed so as to be turned on when the clutch pedal is depressed until it is in a half-clutch state. For this reason, when the second clutch switch is in the ON state, the first clutch switch is always in the ON state. For example, when the second clutch switch is in the ON state and the first clutch switch is in the OFF state, the restart control device can determine that an abnormality has occurred in the first clutch switch and the ON state has not been reached.

  On the other hand, even if the second clutch switch is in the OFF state when the first clutch switch is in the ON state, the restart control device does not fully depress the clutch pedal or the second clutch switch is abnormal. It cannot be determined whether or not an ON state occurs. That is, the restart control device of Patent Literature 1 cannot suitably determine that an abnormality has occurred in the second clutch switch.

For this reason, the restart control device of Example 1 of Patent Document 1 restarts the engine if the first clutch switch is in the ON state and the range of the transmission is in the neutral range. As a result, the engine can be restarted even when an abnormality occurs in the second clutch switch. However, if an abnormality occurs in the sensor that detects the neutral range of the transmission, the restart control device cannot accurately detect that the range of the transmission is the neutral range. For example, the engine may start when the first clutch switch is in the ON state when the restart control device determines neutral when the transmission is set in the forward state.
Since the half clutch state is established when the first clutch switch is in the ON state, the engine is started when the transmission is set in the forward state and in the half clutch state. Therefore, the vehicle may start unexpectedly when the engine is started.
In order to prevent such unexpected movement of the vehicle, it is preferable that the restart control device can reliably detect the depression position of the clutch pedal.

  The restart control device described in Example 2 of Patent Literature 1 cannot detect the depression position of the clutch pedal when an abnormality occurs in the clutch stroke sensor. Therefore, the restart control device cannot start the engine when an abnormality occurs in the clutch stroke sensor.

  Therefore, an object of the present invention is to provide a power source control device that can determine that a power source can be started even when an abnormality occurs in a switch that detects that a clutch pedal has been depressed to a predetermined position.

  In order to solve the above problems, the present invention provides a clutch that operates a clutch mechanism that switches between an engaged state in which power output from a power source of a vehicle is transmitted to a drive system and a non-engaged state in which the power is not transmitted to the drive system. An operation amount detection means for outputting an operation amount signal indicating the depression amount of the pedal, and a position detection signal indicating that the clutch pedal has been depressed to the first specific position where the clutch mechanism is in the disengaged state. Specific position detection means for outputting the control unit, and a controller that determines that the power source of the vehicle can be started when the position detection signal detects that the clutch pedal has been depressed to the first specific position; A power source control device comprising Then, the control unit executes cruise control based on the depression amount of the clutch pedal output from the operation amount detection means, if the clutch pedal is not depressed, and the clutch pedal is depressed. In this case, the cruise control is canceled, and when the clutch pedal is returned to the initial position side from the predetermined position, it is determined that the idling stop can be performed, and the clutch pedal is further depressed from the initial position. When the stepping-down operation is performed from the indicator-off position, the shift indicator is turned OFF, and the position indicating that the clutch pedal has been depressed to the first specific position, which is a position on the step-down side from the indicator-off position. If it cannot be detected by the detection signal, When the operation amount signal detects that the clutch pedal has been depressed to the first specific position or that the clutch pedal has been depressed more than the first specific position to reach the second specific position. And determining that the power source can be started and determining that an abnormality has occurred in the specific position detecting means.

According to the present invention, the control unit of the power source control device can determine that the clutch pedal has been depressed to the first specific position based on the position detection signal output from the specific position detection means. Further, the control unit can determine that the power source can be started when the clutch pedal is depressed to the first specific position. The clutch mechanism is configured to be in a disengaged state when the clutch pedal is depressed to the first specific position. Therefore, the position detection signal is a signal indicating that the clutch mechanism is in the disengaged state. Therefore, the control unit determines that the power source can be started when the clutch mechanism is in the non-engaged state. Further, the control unit can determine that an abnormality has occurred in the specific position detecting means. The control unit can determine that the drive source can be started based on the operation amount signal input from the operation amount detection unit even when an abnormality occurs in the specific position detection unit. The control unit can determine that the power source can be started when it is determined that the clutch mechanism is in the disengaged state based on the operation amount signal.
Therefore, the power source control device can determine that the power source can be started when the clutch mechanism is in the non-engaged state even when an abnormality has occurred in the specific position detecting means.

  Further, when the control unit detects that the clutch pedal has been depressed to the first specific position by the position detection signal, the depression amount of the clutch pedal detected by the operation amount signal is: When it is not the stepping operation amount corresponding to the first specific position, it is determined that an abnormality has occurred in the operation amount detecting means.

  According to the present invention, the control unit can determine that an abnormality has occurred in the operation amount detection means. That is, the power source control device can identify one of the abnormality occurrences when an abnormality occurs in one of the specific position detection unit and the operation amount detection unit.

  The control unit is configured to be capable of executing an idling stop that stops the power source when a predetermined power source stop condition is satisfied. When it is determined that an abnormality has occurred in at least one of the specific position detection unit and the operation amount detection unit, the idling stop is not executed even if the power source stop condition is satisfied.

According to the present invention, the control unit can stop the power source by executing idling stop when a predetermined power source stop condition is satisfied. In addition, the control unit may be configured not to execute the idling stop even when the power source stop condition is satisfied when it is determined that an abnormality has occurred in at least one of the specific position detection unit and the operation amount detection unit.
When an abnormality occurs in at least one of the specific position detection means and the operation amount detection means, if an abnormality occurs in one of the areas where no abnormality has occurred, the control unit cannot properly start the power source. By adopting a configuration in which the control unit does not execute idling stop when an abnormality occurs in at least one of the specific position detection unit and the operation amount detection unit, it is possible to avoid a situation in which the power source remains stopped.

  In addition, the control unit is configured such that a brake pedal provided in the vehicle is depressed, a vehicle speed of the vehicle is equal to or lower than a predetermined speed, a transmission device provided in the drive system is set to a neutral state, and the clutch pedal is set to a third specification. It is characterized in that it is determined that the power source stop condition is satisfied when the pedal is not depressed to the position.

  According to the present invention, when the brake pedal of the vehicle is depressed, the vehicle speed is equal to or lower than the predetermined speed, the transmission provided in the drive system is set to the neutral state, and the clutch pedal is not depressed to the third specific position. The controller can determine that the power source stop condition is satisfied and execute idling stop.

  According to the present invention, it is possible to provide a power source control device that can determine that a power source can be started even when an abnormality occurs in a switch that detects that the clutch pedal has been depressed to a predetermined position.

It is a figure which shows the vehicle provided with the power source control apparatus of this embodiment. It is a figure which shows the relationship between a clutch stroke and operation | movement of a control part. It is a perspective view which shows the structure of a clutch pedal apparatus. It is a disassembled perspective view of a clutch pedal apparatus. It is a figure which shows the relationship between a clutch stroke, the operation amount signal which a stroke sensor outputs, and the position detection signal which a push switch outputs. It is a flowchart which shows the procedure in which a control part starts an engine, when an ignition switch is turned ON.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a diagram illustrating a vehicle provided with the power source control device of the present embodiment.
As shown in FIG. 1, the vehicle 1 includes a manual transmission (manual transmission 11), and the motive power generated by the power source (engine 2) is transmitted to the drive system 4 to travel. The drive system 4 of the vehicle 1 includes drive wheels 4 a, a drive shaft 4 b, and a manual transmission 11. The drive shaft 4b is a rotation shaft of the drive wheel 4a.

  The pedal operation unit 12 of the vehicle 1 includes an accelerator pedal 12a, a brake pedal 12b, and a clutch pedal 12c. The clutch pedal 12 c is an operator that operates the clutch mechanism 3. The clutch mechanism 3 is disposed between the engine 2 and the drive system 4 (manual transmission 11). The clutch mechanism 3 is configured to switch between an engaged state and a non-engaged state. When the clutch mechanism 3 is engaged, the power output from the engine 2 is transmitted to the drive system 4 (manual transmission 11). When the clutch pedal 12c is not depressed, the clutch mechanism 3 is engaged. When the clutch pedal 12c is depressed, the clutch mechanism 3 is switched to the non-engaged state. When the clutch mechanism 3 is disengaged, the transmission of the power output from the engine 2 to the drive system 4 is interrupted.

The accelerator pedal 12 a is an operator that adjusts the throttle opening of the engine 2. When the accelerator pedal 12a is depressed, the throttle opening increases.
The brake pedal 12b is an operator that operates a brake device (not shown). When the brake pedal 12b is depressed, a braking force is generated in the vehicle 1.

The engine 2 (Eng.) Is controlled by the control unit 10 (Cont.).
The control unit 10 starts the engine 2 when an ignition switch (not shown) is turned on.
Moreover, the control part 10 is comprised so that an idling stop can be performed. The control unit 10 performs idling stop when the predetermined condition (power source stop condition) is satisfied, and stops the engine 2. Further, the control unit 10 restarts the engine 2 that is stopped when the driver performs a predetermined operation.
An example of the power source stop condition for the control unit 10 to perform idling stop and stop the engine 2 is shown below.
Condition 1: The brake pedal 12b is depressed.
Condition 2: The vehicle speed (vehicle speed) is a predetermined value or less.
Condition 3: The manual transmission 11 is set to a neutral state.
Condition 4: The clutch pedal 12c is not depressed to a predetermined position.
The control unit 10 determines that the power source stop condition is satisfied when all of the conditions 1 to 4 are satisfied. When it is determined that the power source stop condition is satisfied, the control unit 10 performs idling stop to stop the engine 2.
The neutral state of condition 3 indicates a state where the power of the engine 2 is not transmitted to the drive shaft 4b (so-called neutral state). Moreover, the predetermined position of the condition 4 is an idling stop executable position (third specific position) described later.

  The control unit 10 detects the vehicle speed of the vehicle 1 based on a signal input from a vehicle speed sensor (not shown). Moreover, the control part 10 detects the depression operation amount of the brake pedal 12b with the signal input from a stroke sensor (not shown).

The vehicle 1 is provided with a shift indicator 11a. The shift indicator 11a notifies the driver of the engine speed suitable for upshifting by the light emitted from the indicator lamp. The control unit 10 causes the shift indicator 11a to emit light when the rotation speed of the engine 2 becomes an engine rotation speed suitable for upshifting.
Moreover, the control part 10 may be comprised so that cruise control can be performed. The control unit 10 performs cruise control by controlling the engine 2 so that the vehicle 1 travels at a constant speed set by the driver.

Based on the depression amount (clutch stroke) of the clutch pedal 12c, the control unit 10 starts (restarts) the engine 2, cancels the cruise control, and stops the light emission of the shift indicator 11a.
FIG. 2 is a diagram illustrating the relationship between the clutch stroke and the operation of the control unit. In FIG. 2, the horizontal axis indicates the clutch stroke Cst. The clutch pedal 12c shown in FIG. 1 has a movable range from a position where it is not depressed (initial position: clutch stroke Cst = “St0”) to a position where it is completely depressed (end position: clutch stroke Cst = “StE”). It becomes.

  The control unit 10 enables cruise control only when the clutch pedal 12c is in the initial position (when the clutch stroke Cst is “St0”). Further, the control unit 10 makes it impossible to execute cruise control when the clutch pedal 12c is depressed even a little. That is, when the other conditions are satisfied, the control unit 10 executes cruise control unless the clutch pedal 12c is depressed. When the clutch pedal 12c is depressed even a little, the control unit 10 releases the cruise control (stops execution).

  When the clutch pedal 12c returns to the initial position side from the predetermined position (position where the idling stop can be performed: clutch stroke Cst = “St1”) (that is, the clutch pedal 12c is depressed to the position where the idling stop can be performed). When not operated), it is determined that the idling stop can be executed. The idling stop executable position is a position set in advance as a position to depress the clutch pedal 12c when the driver intends to shift. In the present embodiment, the idling stop executable position is set as the third specific position. The first specific position and the second specific position will be described later.

When other power source stop conditions (the above-mentioned conditions 1 to 3) such as a vehicle speed of a predetermined value or less are satisfied, the control unit 10 is operated to depress the clutch pedal 12c to the idling stop executable position (third specific position). When not, the engine 2 (see FIG. 1) is stopped by executing idling stop.
When the clutch pedal 12c is depressed more than the idling stop executable position, the control unit 10 cannot execute idling stop, and does not execute idling stop even if other power source stop conditions are satisfied.

When the clutch pedal 12c is depressed more than a predetermined position (indicator off position: clutch stroke Cst = “St2”), the control unit 10 stops (turns off) the light emission of the shift indicator 11a (see FIG. 1). The indicator-off position is a fixed value set in advance as a position where the driver depresses the clutch pedal 12c in order to shift-change. The indicator off position is, for example, a position corresponding to the clutch stroke Cst when the clutch mechanism 3 (see FIG. 1) is in the half clutch state.
The half-clutch state is a state where a part of the power output from the engine 2 (see FIG. 1) is transmitted to the drive system 4 (see FIG. 1). That is, the half-clutch state is an intermediate state (half-engaged state) between the engaged state and the non-engaged state. When the clutch pedal 12c is returned to the initial position side from the indicator off position, the control unit 10 enables the shift indicator 11a to emit light (can be turned on). Then, the control unit 10 causes the shift indicator 11a to emit light (turns ON) when the rotational speed of the engine 2 becomes an engine rotational speed suitable for upshifting.

The control unit 10 enables the engine 2 (see FIG. 1) to be started when the clutch pedal 12c is depressed more than a predetermined position (engine startable position: clutch stroke Cst = “St3”). The engine startable position is a position where the clutch pedal 12c is depressed until the clutch mechanism 3 (see FIG. 1) is disengaged. In the present embodiment, the engine startable position is set as the first specific position.
When the engine 2 is stopped due to idling stop or when an ignition switch (not shown) is turned ON, the control unit 10 operates the engine 2 when the clutch pedal 12c is depressed from the engine startable position. Start.
When the clutch pedal 12c is returned to the initial position side from the engine startable position (that is, when the clutch pedal 12c is not depressed to the engine startable position), the control unit 10 starts the engine 2. Impossible.
When the engine 10 cannot be started, the control unit 10 does not restart the engine 2 that has stopped at the idling stop. In addition, when it is impossible to start the engine 2, the control unit 10 does not start the engine 2 even when an ignition switch (not shown) is turned on.

  In this manner, the control unit 10 controls the vehicle 1 (see FIG. 1) according to the depression operation amount (clutch stroke Cst) of the clutch pedal 12c. For this reason, the vehicle 1 is provided with an operation amount detection means for detecting the clutch stroke Cst.

FIG. 3 is a perspective view showing the configuration of the clutch pedal device, and FIG. 4 is an exploded perspective view of the clutch pedal device.
The pedal operation part 12 (refer FIG. 1) of the vehicle 1 has the clutch pedal apparatus 20 comprised as shown in FIG. The clutch pedal 12 c is provided in the clutch pedal device 20. The clutch pedal 12c is biased so as to return to a predetermined initial position by biasing means (not shown). When the clutch pedal 12c is depressed from the initial position, the clutch mechanism 3 (see FIG. 1) is switched from the engaged state to the non-engaged state.

The clutch pedal 12c is pivotally supported by a bracket 206 fixed to the vehicle body of the vehicle 1 (see FIG. 1). The bracket 206 includes an upper bracket 206a and a lower bracket 206b. The upper bracket 206a covers the operation amount detection means (stroke sensor 202) from above. The lower bracket 206b is fixed to the vehicle body. The stroke sensor 202 converts the depression amount of the clutch pedal 12c (clutch stroke Cst) into an operation amount signal Sig_ST and outputs it. The operation amount signal Sig_ST is input to the control unit 10.
The operation amount signal Sig_ST input to the control unit 10 is a signal indicating the operation amount (clutch stroke Cst) of the clutch pedal 12c. That is, the stroke sensor 202 (operation amount detection means) outputs an operation amount signal Sig_ST indicating the operation amount of the clutch pedal 12c.

The clutch pedal 12 c includes a pedal portion 200, a pedal rotation shaft 208, and a pedal arm 210. One end of the pedal portion 200 is provided with a tread surface 200a. The pedal unit 200 is depressed by the driver.
In addition, the clutch pedal apparatus 20 makes the side provided with the tread surface 200a downward. That is, the tread surface 200 a is provided at the lower end of the pedal portion 200.
Reference numeral 42 denotes a push rod that connects the pedal portion 200 and the clutch mechanism 3 (see FIG. 1).

  The pedal rotation shaft 208 is fixed to the lower bracket 206b and rotatably supports the upper end of the pedal portion 200. The pedal arm 210 extends toward the upper end side of the pedal part 200 and rotates integrally with the pedal part 200. The pedal arm 210 is provided with a pin 212 projecting in the axial direction of the pedal rotation shaft 208.

  The pedal rotation shaft 208 includes a columnar rod 208a and a cylindrical body 208b. The rod 208a is cantilevered by the lower bracket 206b. The cylindrical body 208b is externally fitted to the rod 208a, and is provided so as to be rotatable around the central axis CL1. The upper end of the pedal part 200 and the lower end of the pedal arm 210 are fixed to the cylindrical body 208b by welding or the like. That is, the cylindrical body 208b, the pedal portion 200, and the pedal arm 210 are configured to be integrally rotatable with the central axis CL1 of the rod 208a as the center of rotation.

The stroke sensor 202 has a sensor body 214 and a sensor arm 218. The sensor arm 218 is provided so as to be rotatable with respect to the sensor main body 214 about the sensor rotation shaft 216. The sensor body 214 converts the rotation angle of the sensor arm 218 into an operation amount signal Sig_ST and outputs it.
Two protrusions 222 for positioning are formed on the sensor body 214. The protrusions 222 are formed at positions that are symmetric about the sensor rotation axis 216. In a state where the sensor main body 214 is attached to the bracket 206, the protrusion 222 is inserted into a reference hole 224 formed in the bracket 206 (upper bracket 206a). By inserting the protrusion 222 into the reference hole 224, the position of the sensor body 214 with respect to the bracket 206 is determined.

  As shown in FIG. 4, the sensor main body 214 is formed with a fixing portion 220. The fixing part 220 extends from the sensor body 214 toward the bracket 206 side. The fixing portion 220 contacts the bracket 206 in a state where the sensor main body 214 is attached to the bracket 206. A screw hole 246 is processed in the fixing portion 220. Then, the bolt 242 is screwed into the screw hole 246 of the fixing portion 220, and the sensor main body 214 is fastened and fixed to the bracket 206. The bolt 242 passes through the insertion hole 244 formed in the bracket 206 and is screwed into the screw hole 246 of the fixing portion 220.

The end of the sensor arm 218 is bifurcated, and the pin 212 is engaged between the forks. The pin 212 is provided on the pedal arm 210. The pedal arm 210 rotates integrally with the pedal unit 200. Therefore, as the pedal unit 200 rotates, the pin 212 rotates around the central axis CL <b> 1 and rotates the sensor arm 218 around the sensor rotating shaft 216.
With such a configuration, the stroke sensor 202 outputs an operation amount signal Sig_ST (see FIG. 3) corresponding to the amount of rotation of the pedal unit 200 (the amount of depression of the clutch pedal 12c).

  Further, as shown in FIG. 3, the clutch pedal device 20 is provided with a specific position detecting means (push switch 203). The push switch 203 outputs the position detection signal Sig_PO in an ON state (ON) when the switch operator 203b is pushed into the main body 203a. The switch operator 203b is automatically returned to the position where the position detection signal Sig_PO is turned off (OFF) and output by the urging means. The push switch 203 is arranged so that the switch operator 203b is pushed into the main body 203a by the pedal part 200 that is depressed to the engine startable position. That is, the push switch 203 (specific position detecting means) outputs a position detection signal Sig_PO indicating that the clutch pedal 12c has been depressed to the engine startable position (first specific position).

  The position detection signal Sig_PO is input to the control unit 10. The controller 10 determines that the clutch pedal 12c has been depressed to the engine startable position (first specific position) when the position detection signal Sig_PO is turned on.

FIG. 5 is a diagram illustrating the relationship between the clutch stroke, the operation amount signal output from the stroke sensor, and the position detection signal output from the push switch.
In FIG. 5, the horizontal axis indicates the clutch stroke Cst. Further, the operation amount signal Sig_ST is indicated by a solid line, and the position detection signal Sig_PO is indicated by a broken line.

As shown in FIG. 5, the operation amount signal Sig_ST increases from an initial value “SL” when the clutch pedal 12c is in the initial position to a final value “SH” when the clutch pedal 12c is in the end position.
The push switch 203 (see FIG. 3) sets the position detection signal Sig_PO to an ON state (ON) and outputs it when the clutch pedal 12c is depressed to the engine startable position (clutch stroke Cst = “St3”). .

  The engine startable position is between the initial position (St0) and the end position (StE). Therefore, when the clutch pedal 12c is depressed to the engine startable position (when the clutch stroke Cst is “St3”), the operation amount signal Sig_ST is set to a value (predetermined intermediate value: SM) smaller than the final value “SH”. Become.

When the position detection signal Sig_PO input from the push switch 203 (see FIG. 3) is on, the control unit 10 (see FIG. 3) determines that the clutch pedal 12c has been depressed to the engine startable position. Then, it is determined that the engine 2 (see FIG. 1) can be started.
When it is determined that the engine 2 can be started, the control unit 10 starts the engine 2 when an ignition switch (not shown) is turned on. When it is determined that the engine 2 can be started, the control unit 10 starts the engine 2 when the engine 2 is stopped at an idling stop.

Further, when the operation amount signal Sig_ST input from the stroke sensor 202 (see FIG. 3) reaches the final value “SH”, the control unit 10 (see FIG. 3) determines that the clutch pedal 12c has been depressed to the end position. judge. In the present embodiment, the end position is the second specific position.
For example, when an abnormality occurs in the push switch 203 (see FIG. 3) and the position detection signal Sig_PO does not change from the off state (or when the input of the position detection signal Sig_PO to the control unit 10 is stopped), the control unit 10 When the operation amount signal Sig_ST detects that the clutch pedal 12c has been depressed to the end position (second specific position), that is, when the operation amount signal Sig_ST reaches the final value “SH”, the engine 2 (See FIG. 1) is determined to be startable.

In the present embodiment, the end position is set as the second specific position, and the control unit 10 (see FIG. 3) determines that the engine 2 (see FIG. 3) when the clutch pedal 12c is depressed to the end position (second specific position). 1) is determined to be startable.
For example, as a design change example, a predetermined position (an intermediate position between the engine startable position and the end position) that does not reach the end position at the position where the engine is depressed more than the engine startable position (first specific position) is set to the second position. The configuration may be a specific position. In this case, the control unit 10 determines that the engine 2 can be started when the operation amount signal Sig_ST detects that the clutch pedal 12c has been depressed to the second specific position.

  As another design change example, a configuration in which the second specific position is an engine startable position (that is, a configuration in which the first specific position and the second specific position are the same position) may be employed. In this case, the control unit 10 can start the engine 2 (see FIG. 1) when the operation amount signal Sig_ST detects that the clutch pedal 12c has been depressed to the engine startable position (second specific position). judge. Even with this configuration, the control unit 10 can determine that the engine 2 (see FIG. 1) can be started when an abnormality occurs in the push switch 203 (see FIG. 3).

  That is, when the position detection signal Sig_PO cannot detect that the clutch pedal 12c has been depressed to the engine startable position, the control unit 10 illustrated in FIG. 1 has depressed the clutch pedal 12c to the engine startable position. Alternatively, it is determined that the engine 2 can be started when the operation amount signal Sig_ST detects that the end position (or the second specific position set elsewhere) is reached by depressing from the engine startable position. To do.

  Then, the control unit 10 starts the engine 2 when it is determined that the engine 2 can be started when an ignition switch (not shown) is turned on. The control unit 10 starts the engine 2 when it is determined that the engine 2 can be started when the engine 2 is stopped at idling stop.

As described above, the clutch pedal device 20 of the present embodiment shown in FIG. 3 includes the stroke sensor 202 that detects the amount of depression of the clutch pedal 12c (clutch stroke Cst). Further, the clutch pedal device 20 includes a push switch 203 that detects that the clutch pedal 12c has been depressed to the engine startable position.
The stroke sensor 202 outputs an operation amount signal Sig_ST indicating the clutch stroke Cst. The push switch 203 outputs a position detection signal Sig_PO indicating that the clutch pedal 12c has been depressed to the engine startable position.

Then, the control unit 10 determines that the engine 2 can be started when the position detection signal Sig_PO detects that the clutch pedal 12c has been depressed to the engine startable position (first specific position). Further, when the position detection signal Sig_PO is in the OFF state, the control unit 10 starts the engine 2 when the operation amount signal Sig_ST detects that the clutch pedal 12c has been depressed to the end position (second specific position). Judge that it is possible.
In the present embodiment, the control unit 10 determines that the engine 2 can be started based on the position detection signal Sig_PO output from the push switch 203 and the operation amount signal Sig_ST output from the stroke sensor 202. Therefore, the power source control device is configured to include the control unit 10, the stroke sensor 202, and the push switch 203.

  For example, even when an abnormality occurs in the push switch 203 and the position detection signal Sig_PO does not change from the off state, the control unit 10 (see FIG. 1) can control the engine 2 based on the operation amount signal Sig_ST input from the stroke sensor 202. (See FIG. 1) can be started. Therefore, the engine 2 is started without any trouble. Further, when the engine 2 is started, the clutch pedal 12c is depressed to the end position. Therefore, the clutch mechanism 3 (see FIG. 1) is in an unengaged state. For this reason, even if the engine 2 is started, the vehicle 1 (see FIG. 1) does not start.

  FIG. 6 is a flowchart showing a procedure by which the control unit starts the engine when the ignition switch is turned on. A procedure for starting the engine 2 (see FIG. 1) by the control unit 10 (see FIG. 1) when an ignition switch (not shown) is turned on will be described based on the flowchart shown in FIG. ~ 5).

When an ignition switch (not shown) is turned on (step S1 → Yes), the control unit 10 determines whether the position detection signal Sig_PO is on or off (step S2).
When the position detection signal Sig_PO is in the on state (step S2 → Yes), the control unit 10 starts cranking and starts the engine 2 (step S3). Then, the procedure for starting the engine 2 is terminated. On the other hand, when the position detection signal Sig_PO is in an off state (step S2 → No), the control unit 10 determines whether or not the operation amount signal Sig_ST is the final value “SH” (step S4).
When the manipulated variable signal Sig_ST is the final value “SH” (step S4 → Yes), the control unit 10 advances the procedure to step S3 and starts the engine 2. On the other hand, when the operation amount signal Sig_ST is not the final value “SH” (step S4 → No), the control unit 10 returns the procedure to step S2.
In addition, when an ignition switch is not turned ON by step S1 (step S1-> No), the control part 10 returns a procedure to step S1.

As described above, the control unit 10 of the present embodiment starts the engine 2 based on the position detection signal Sig_PO input from the push switch 203 when the ignition switch is turned on. Further, when the position detection signal Sig_PO is in the off state, the control unit 10 starts the engine 2 based on the operation amount signal Sig_ST input from the stroke sensor 202.
Therefore, the engine 2 can be started even in a state where an abnormality has occurred in one of the push switch 203 and the stroke sensor 202.
Further, when the position detection signal Sig_PO is in the ON state and when the operation amount signal Sig_ST is the final value “SH”, the clutch mechanism 3 is in the disengaged state, and the power output from the engine 2 is the drive system. 4 (drive wheel 4a etc.) is not transmitted. Therefore, the vehicle 1 does not start by starting the engine 2.
The controller 10 can start the engine 2 in the same procedure when releasing the idling stop.

Further, the control unit 10 can determine whether an abnormality has occurred in the stroke sensor 202 and the push switch 203.
For example, when the position detection signal Sig_PO input from the push switch 203 is off when the operation amount signal Sig_ST is the final value “SH”, the control unit 10 determines that an abnormality has occurred in the push switch 203.

  Further, when the control unit 10 detects that the clutch pedal 12c is depressed to the engine startable position (first specific position) by the position detection signal Sig_PO, the clutch stroke Cst detected by the operation amount signal Sig_ST is When it is not the stepping operation amount corresponding to the engine startable position (first specific position), it is determined that an abnormality has occurred in the stroke sensor 202. For example, when the position detection signal Sig_PO input from the push switch 203 is on, the control unit 10 determines that an abnormality has occurred in the stroke sensor 202 when the operation amount signal Sig_ST does not change from the initial value “SL”. To do.

And it is good also as a structure which does not perform an idling stop, when the control part 10 determines with abnormality having occurred in at least one of the stroke sensor 202 and the push switch 203. FIG. When the idling stop is executed in a state where the control unit 10 cannot accurately detect the clutch stroke Cst, the engine 2 may not be restarted when the clutch pedal 12c is depressed (that is, the engine 2 does not return from the idling stop). is there. By adopting a configuration in which the idling stop is not executed when an abnormality occurs in at least one of the stroke sensor 202 and the push switch 203, a state where the engine 2 is not restarted from the idling stop can be avoided.
When the controller 10 determines that an abnormality has occurred in at least one of the stroke sensor 202 and the push switch 203 when the engine 2 is stopped due to the idling stop, the controller 10 cancels the idling stop at that time. The engine 2 may be configured to start.

  Further, the clutch pedal device 20 of the present embodiment shown in FIG. 3 is configured so that a single stroke sensor 202 can detect a predetermined position of the clutch pedal 12c (an idling stop executable position, an indicator off position, etc.). For this reason, the detection means (switch etc.) which detects each predetermined position becomes unnecessary. Therefore, the number of parts constituting the clutch pedal device 20 is reduced. Further, the structure of the clutch pedal device 20 is simplified. By reducing the number of parts, the weight and cost of the clutch pedal device 20 can be reduced. The simplification of the structure can improve the maintainability (maintenability) of the clutch pedal device 20.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed in design without departing from the spirit of the invention.

For example, as shown in FIG. 3, the rotation of the pedal unit 200 is input to the stroke sensor 202 of this embodiment via the sensor arm 218 and the pedal arm 210. The configuration is not limited to this, and the configuration in which the rotation of the cylindrical body 208 b is directly input to the stroke sensor 202 may be used.
Further, the specific position detecting means for detecting the engine startable position (first specific position) is not limited to the push switch 203. For example, a configuration in which an optical switch (light-shielding switch) having a structure in which light reception by the light receiving unit is blocked by the pedal unit 200 or the like when the clutch pedal 12c is depressed to the engine startable position may be provided.

1 vehicle 2 engine (power source)
3 Clutch mechanism 4 Drive system 4a Drive wheel 4b Drive shaft 10 Control unit (power source control device)
11 Manual transmission (transmission)
12b Brake pedal 12c Clutch pedal 202 Stroke sensor (operation amount detection means, power source control device)
203 push switch (specific position detection means, power source control device)
Sig_PO position detection signal Sig_ST manipulated signal

Claims (4)

An operation amount signal indicating a depressing operation amount of a clutch pedal for operating a clutch mechanism that switches between an engagement state in which power output from a power source of a vehicle is transmitted to a drive system and a non-engagement state in which the power is not transmitted to the drive system. Manipulated variable detection means for outputting
Specific position detection means for outputting a position detection signal indicating that the clutch pedal has been depressed to a first specific position at which the clutch mechanism is in the disengaged state;
A controller that determines that the power source of the vehicle can be started when the position detection signal detects that the clutch pedal has been depressed to the first specific position;
The controller is
Based on the depression amount of the clutch pedal output from the operation amount detection means, cruise control is executed if the clutch pedal is not depressed, and cruise control is performed if the clutch pedal is depressed. When the clutch pedal is returned to the initial position side from the predetermined position, it is determined that the idling stop can be executed,
Further, when the clutch pedal is depressed from an indicator off position that is a position on the depression side from the initial position, the shift indicator is turned off, and the clutch pedal is a position on the depression side from the indicator off position. If the position detection signal cannot detect that the first specific position has been depressed, the clutch pedal has been depressed to the first specific position, or the first specific position has been depressed. When it is detected by the operation amount signal that the second specific position has been reached, it is determined that the power source can be started, and it is determined that an abnormality has occurred in the specific position detecting means. Power source control device. The controller is
When the position detection signal detects that the clutch pedal has been depressed to the first specific position,
It is determined that an abnormality has occurred in the operation amount detection means when a depression operation amount of the clutch pedal detected by the operation amount signal is not a depression operation amount corresponding to the first specific position. Item 4. The power source control device according to Item 1. The control unit is configured to be capable of executing an idling stop that stops the power source when a predetermined power source stop condition is satisfied,
The idling stop is not executed even when the power source stop condition is satisfied when it is determined that an abnormality has occurred in at least one of the specific position detection unit and the operation amount detection unit. 2. The power source control device according to 2. The controller is
The brake pedal provided on the vehicle is depressed,
The vehicle speed of the vehicle is below a predetermined speed,
The transmission provided in the drive system is set to a neutral state,
4. The power source control device according to claim 3, wherein the power source stop condition is determined to be satisfied when the clutch pedal is not depressed to a third specific position. 5.

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