JPH0571824B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for a vehicle equipped with a constant mesh automatic transmission.

[Prior Art] When automating a constant mesh transmission, an electric motor drives a hydraulic pump to generate hydraulic pressure.
This hydraulic pressure is supplied and discharged to automatically drive the clutch actuator, transmission shift and select actuator.

In vehicles equipped with such automatic transmissions, when starting the engine, it is necessary to release the clutch or keep the automatic transmission in a neutral state (neutral state), and generally the engine cannot be started unless the shift lever is set to N or P. The structure is such that it cannot be performed. However, when the vehicle is running in D range, etc., and the vehicle is stopped in D range and the engine is turned off (OFF), the automatic transmission normally remains in 1st gear, and then when trying to start the engine again, the shift lever is turned off. Even if the shift lever is set to N or P, there is no mechanical connection between the shift lever and the automatic transmission, so the automatic transmission remains in the 1st speed state, and the engine cannot be started in this state.
Conventionally, when starting an engine, the electric motor of the hydraulic pump for actuating the actuators is first driven by the vehicle's power supply (battery) in response to the engine starting operation using the key switch to generate hydraulic pressure and drive each actuator. Then, the clutch was released or the automatic transmission was placed in neutral, and the starter was then turned to start the engine.

[Problems to be Solved by the Invention] However, in this method, when starting the engine, a time delay occurs between the key switch operation and the engine starting. Furthermore, before starting the engine, the vehicle power source must be used to drive the electric motor of the hydraulic pump in addition to driving the starter, which increases the load on the vehicle power source.

The present invention provides a control system for a vehicle equipped with a constant-mesh automatic transmission that energizes the vehicle power supply and ignition device to prevent the engine from stopping even if the key switch is turned off when the gear position of the automatic transmission is not in the neutral position. The purpose is to provide equipment.

[Means for Solving the Problems] The control device for a vehicle equipped with a constantly meshing automatic transmission according to the present invention comprises gears that are rotatably supported by a plurality of transmission shafts arranged in parallel and that are always in mesh with each other, and transmission gears that are connected to these gears. A synchronized meshing device that connects and disconnects from the shaft, a drive means for the synchronized meshing device, and a driving mechanism for the synchronized meshing device that is manually operated by the driver to park (P), reverse (R), neutral (N), forward (D), etc. a selection mechanism having a predetermined speed selection position; and a vehicle running condition based on the vehicle speed, throttle opening, and speed selection position of the selection mechanism is inputted, and the driving means is controlled to control the forward speed and the forward speed according to the vehicle running condition. A control device for a vehicle equipped with a constant-mesh automatic transmission, having an electronic control circuit that achieves reverse gear train and neutral, and a key switch that controls communication with a vehicle power source and an ignition device to stop and run the engine. A neutral off switch is provided that connects the vehicle power source and the ignition device without using the key switch, and the electronic control circuit is configured to operate when the gear position of the automatic transmission is set to a position other than the neutral position. When the vehicle is stopped and the driver operates the key switch to stop the engine, the neutral off switch is turned on to energize the vehicle power supply and ignition system, and the engine operating state is changed to the above-mentioned constant mesh type. The feature is that the automatic transmission continues until it becomes neutral.

[Operations and Effects of the Invention] With the above configuration, the control device for a vehicle equipped with a constant-mesh automatic transmission according to the present invention has the following operations and effects.

A neutral off switch is provided that connects the vehicle power source and the ignition device without using a key switch, and the electronic control circuit is configured to stop the vehicle when the automatic transmission gear position is set to a position other than the neutral position. When the driver operates the key switch to stop the engine, the neutral off switch is turned on for a certain period of time, energizing the vehicle power supply and ignition system, and the engine operating state is constantly controlled by the mesh automatic transmission. Since the constant mesh automatic transmission is always set to the neutral position when the engine is started, the electric motor of the hydraulic pump is driven before the engine starts to activate the constant mesh automatic transmission. It is no longer necessary to return the vehicle to the neutral position, and the load on the vehicle power source is accordingly reduced, improving the durability of the vehicle power source.

[Embodiment] A control device for a vehicle equipped with a constant-mesh automatic transmission according to the present invention will be described based on an embodiment shown in the drawings.

FIG. 1 shows an automatic transmission for a front engine, front drive vehicle using a flexible coupling used in one embodiment of the present invention.

This vehicle transmission includes a starting device 100, a constant-mesh automatic transmission 200 for five forward speeds and one reverse speed, a differential mechanism 250, and a transmission case 300 housing these.

The starting device 100 includes a flexible coupling (hereinafter referred to as the coupling) 110, a power cutoff clutch (hereinafter referred to as the clutch) 130 of a power cutoff device provided inside the coupling, and the outer periphery of the coupling 110. Now, we will release the direct coupling clutch 150 provided on the engine side (the right side in the figure, hereinafter referred to as the right side), the oil pump 170 provided between the input member and the output member of the coupling 110, and the clutch 130. and a servo mechanism 190 for engagement.

The coupling ring 110 connects a starting device 100 connected to the crankshaft of an engine E (shown in FIG. 2).
A front cover 111 connected to the input shaft 101 (shown in FIG. 2) of the front cover 11
An annular plate-shaped rear cover 11 welded to 1 at the outer periphery.
0A, the pump blade 113 provided around the inner peripheral wall surface of the rear cover 110A, the pump blade 1
Turbine blade 11 arranged opposite to 13
4, and a turbine runner 115 holding the turbine blade 114. The automatic transmission 200 side (left side in the figure, hereinafter referred to as the left side) at the center of the front cover 111 has a tip end that is the drive shaft 106 of the oil pump 170, and an oil pump fixed to the oil pump 170 in the middle. A central shaft 108 serving as a disk plate holding shaft 107 that supports the cover 177 slidably in the rotational direction is provided therethrough. Also, front cover 1
A cylindrical portion 111B on which a frictional engagement surface 111A orthogonal to the axis is formed is connected to the outer circumferential portion of the inner wall of 11.

The clutch 130 is welded to the hub-like part 116 of the turbine runner 115 at the left end, and is connected via a cylindrical part 144 to a direct-coupled clutch input rear damper plate (hereinafter referred to as rear damper plate) equipped with a frictional engager on the outer periphery. ) 158B, a damper spring 157 is installed at the tip on the right side, and a front damper plate 158C is installed on the right side of the tip.
A direct coupling clutch output damper disk (hereinafter referred to as disk) 158A is a disk plate of the clutch 130 rotatably supported via a thrust bearing 160 and a backing plate 161 attached to the front cover 111 on the center right side. A cylindrical clutch plate case 134 is welded to the clutch plate case 134 and has an inner spline 133 formed on its inner periphery, and the output shaft 10 of the starting device 100.
3, a clutch hub part 137 having an outer spline 136 formed at a position corresponding to the inner spline 133 of the clutch plate case 134, and a disk part connecting the hub part 135 and the clutch hub part 137. 138 and a clutch disk wheel 139 whose outer periphery is the clutch plate case 1.
34, and clutch disks 142 whose inner peripheries are spline-fitted to the clutch hub portion 137 of the clutch disk wheel 139 and which are alternately stacked with the clutch plates 141.

The direct coupling clutch 150 includes a friction engagement surface 111A formed on the inner peripheral surface of the front cover 111 and a friction engagement element 10 supported by a rear damper plate 158B.
It consists of 4.

In this embodiment, an internal gear pump is used as the oil pump 170, and the clutch disk wheel 1
39 between the oil pump cover 177 and the disc portion 138 of the clutch disc wheel 139. This oil pump 170
is the oil pump cover 17 at the outer peripheral portion.
7, and an oil seal 17 whose inner periphery is attached to the tip small diameter portion 103B of the output shaft 103 of the starting device 100.
The thrust bearing 176 is loosely fitted through the
The oil pump body 1 is brought into contact with the disc portion 138 of the clutch disc wheel 139 via the
70A, an internal gear 172 rotatably fitted in a gear room provided beside the engine of the oil pump body 170A, and the central shaft 108.
External gear 171 spline-fitted to the tip of
and an oil passage 103 formed at the center of the output shaft 103.
It consists of a suction port 174 connected to A and communicating between an oil pump cover 177 and a front cover 111.

The servo mechanism 190 of the clutch 130 is a rod 1 connected to a clutch actuator 2 which is operated by automatic supply/discharge from a hydraulic control device to be described later.
91, a release fork 192 rotated around a fulcrum 193 by the rod 191, and a flange 194 abutted on the release fork 192.
a bearing 195 supported by the bearing 195; and a sliding sleeve 19 fitted into the bearing 195.
6, and the inner peripheral edge is the sliding sleeve 196.
a diaphragm spring 197 fixed to the right end of the clutch 197; and a pressing ring 1 that is engaged with the outer peripheral edge of the diaphragm spring 197 and presses the clutch 130 via a thrust bearing 198.
99, and the clutch 130 is released and engaged manually or automatically.

The gear transmission 200 has a known configuration, and has an output shaft 103 of the starting device 100 as an input shaft, an output shaft 201 that is parallel to the input shaft, and a first-speed transmission on the input shaft 103. , 2nd speed, 3rd speed, 4th speed and 5th speed drive gears 213, 214, 21
5, 216 and 217 are integrally provided, and the output shaft 201 has a first speed, a second speed, a third speed, a fourth speed and a 5th speed driven gear 221, 222, 22
3, 224 and 225 are rotatably fitted. and two adjacent driven gears 221,
222 is connected to the output shaft 201 by the first and second speed dog clutches 202 which are synchronized meshing devices.
selectively coupled to the drive gears 215, 216
Similarly, the drive gear 217 is selectively connected to the input shaft 103 by third and fourth speed dog clutches 203, which are synchronized mesh devices, and the drive gear 217 is similarly connected to the input shaft 103 by a fifth speed dog clutch 204, which is a synchronized mesh device. It is designed to be selectively engaged by a certain fifth speed dog clutch 204,
Furthermore, a reverse driven gear 228 that meshes with the reverse drive gear 218 via an idler gear (not shown) is provided.

Also, the starting device 1 of the output shaft 201
00 is provided with an output gear 229, which meshes with the ring gear 251 of the differential mechanism 250, so that the power of the output shaft 201 of the automatic transmission 200 is transferred from the ring gear 251 to the case 252 and the pinion shaft. 25
3. It is transmitted to the side gear 255 via the pinion 254, and further transmitted to the drive wheels via the axle 256.

This starting device 100 operates as follows.

A servo mechanism 190 of the clutch 130 automatically causes a release fork 192 to rotate to the left about a fulcrum 193 when a rod 191 is operated to the left in the drawing, thereby displacing a sliding sleeve 196 toward the engine via a bearing 195. As a result, the sliding sleeve 196 causes the center of the diaphragm spring 197 to bulge out toward the engine, and the pressing ring 199 connected to the outer periphery of the diaphragm spring 197 is displaced to the left in the drawing. This action releases the clutch 130. In this state, the power is cut off by the clutch 130, so that the automatic transmission 200 can perform a gear change operation.

When the rod 191 automatically moves to the right in the drawing, the sliding sleeve 196 is displaced to the left in the drawing by the action of the double feedback force of the diaphragm spring 197, the pressing ring 199 is pressed against the engine, and the clutch 130 is engaged. , the input shaft 101 and output shaft 103 of the starting device 100 are connected to a coupling 110.
connected via.

In this embodiment, a fluid coupling is used as the fluid transmission device, but a torque converter or the like may also be used. It goes without saying that it can also be used in other fluid transmission devices.

Next, a control device for a vehicle equipped with a constant-mesh type automatic transmission according to the present invention will be explained based on FIG.

In this embodiment, the automatic transmission 200 includes a plurality of constantly meshing gears, and the automatic transmission 200
a clutch 130 that engages and disengages the input shaft 101 of the starting device 100; a clutch actuator 2 of the clutch 130; a first speed of the automatic transmission 200;
2nd speed dog clutch 202, 3rd speed, 4th speed dog clutch 203, 5th speed dog clutch 20
4. Automatically select the actuator that engages the reverse idler gear (not shown) with the reverse gears such as the input shaft 103 and the output shaft 201, and select reverse (R), neutral (N), drive (D), and S. (Second), Low (L)
The hydraulic pump 81 and motor 8
2, a drive means 3A comprising a hydraulic control device 8 as a power source, a shift actuator 3 and a select actuator 4, and a throttle valve 5.
a throttle actuator 5 for displacing 1;
The vehicle speed sensor 61 detects the vehicle speed, the throttle opening sensor 62 detects the throttle opening, and the clutch 130 is activated by the displacement amount of the clutch actuator 2.
Clutch actuator displacement sensor 63 detects the engagement and disengagement of the clutch actuator, gear position sensors 64 and 65 detect the gear position of automatic transmission 200 based on the displacement of shift actuator 3 and select actuator 4, and stop A select lever setting position sensor 67 that detects the setting position of the select lever 91, which has setting positions of (P), reverse (R), neutral (N), drive (D), second (2), and low (L), and a starter ST position where the motor 71 is turned on, IG where the ignition device 72 of the engine E is turned on and the motor 82 that drives the hydraulic pump 81 of the hydraulic control device 8 is turned on.
key switch 7, which has an ACC position that turns on other electrical components, and an OFF position.
Electronic control circuit 6 that inputs signals such as ST signal, IG signal, OFF signal, and throttle valve displacement sensor 68 that detects the displacement amount of throttle valve 51.
5 forward speeds, 1 reverse speed, and 1 reverse speed depending on vehicle driving conditions.
The control device 1 of the constant mesh automatic transmission that achieves a neutral gear train, the hydraulic control device 8 which is the power source of the clutch actuator 2, and the speed selection range of the select lever 91 manually controlled by the driver. A neutral off switch 10 is provided which connects a vehicle power source 73, an ignition 72, and an electronic control circuit 6 via a fuse 74 without using a key switch 7.

The clutch actuator 2 is provided in a metal cylinder 21 as shown in FIG. 2, and has a piston 22 made of polyester fiber covered with a rubber-like elastic material fixed thereto. A coil spring 24 is installed behind the piston 22, and the right end of the rod 191 is fixed to the center of the piston 22. The space partitioned by the piston 22 and the cylinder 21 constitutes an oil chamber 23. An air chamber 25 is formed by the partitioned space. The oil chamber 23 is connected to an oil path 8C from the hydraulic control device 8.

The shift actuator 3 and the select actuator 4 have a rod 34 at the tip that drives a first speed second speed shifter oak 31, a third speed fourth speed shifter oak 32, and a fifth speed reverse shifter oak 33.
44, and is provided with a first oil chamber and a second oil chamber (not shown), and the normal setting position is when the pressure oil is discharged from the first oil chamber and the second oil chamber, and the pressure is set in the first oil chamber. The first setting position is when oil is supplied and pressure oil is discharged from the second oil chamber, and the second setting position is when pressure oil is discharged from the first oil chamber and pressure oil is supplied to the second oil chamber. Set position 3
It has set positions and communicates with oil passages 8A and 8B, respectively.

The hydraulic control device 8 turns on when the electronic control circuit 6 inputs the IG signal or the ON signal of the neutral off switch 10, and controls the motor 82 that drives the hydraulic pump 81, the hydraulic power source 83, the clutch actuator 2, and the shifter. Oil passages 8A, 8B that supply pressure oil to the actuator 3 and select actuator 4;
Consists of 8C.

FIG. 3 shows an operation flowchart of the hydraulic control device 8 of the control device for a vehicle equipped with a constant-mesh automatic transmission according to the present invention.

The key switch 7 is set to the OFF position (step S1), it is determined whether the gear is in the neutral position or not (step S2), and when the gear is in the neutral position, the engine E is turned off (step S3). When the gear position is not in the neutral position, an output is output to control the shift actuator 3 and the select actuator 4 so that the gear stage is in the neutral position, the gear is changed (step S4), and the process then proceeds to (step S3).

This embodiment has the following effects.

b) Since the gear position is neutral when the engine is turned off, it is possible to start the engine even when the capacity of the vehicle's power source is low.

(b) Since the gear is always in neutral when the engine is off, the capacity of the vehicle's power source decreases, making it possible to tow the vehicle with another vehicle if the engine cannot be started.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a vehicle automatic transmission incorporating the control device for a vehicle equipped with a constant mesh automatic transmission according to the present invention, and FIG. This block diagram, FIG. 3, is a flowchart of an electronic control device related to a control device for a vehicle equipped with a constant-mesh automatic transmission according to the present invention. In the figure, 1...Control device for a vehicle equipped with a constant mesh automatic transmission, 2...Clutch actuator, 3...Shift actuator, 4...Select actuator, 5...Throttle actuator, 6...Electronic control circuit, 7...key switch, 8...hydraulic control device,
3A... Drive means, 9... Select mechanism, 61... Vehicle speed sensor, 62... Throttle opening sensor, 63... Clutch actuator displacement amount sensor, 64, 65
... Gear stage position sensor, 67... Select lever setting position sensor, 68... Throttle valve displacement amount sensor, 100... Starting device, 200... Constant mesh automatic transmission.

Claims (1)

[Scope of Claims] 1. A gear rotatably supported by a plurality of transmission shafts arranged in parallel and always in mesh with each other, a synchronized meshing device that connects and disconnects these gears with the transmission shaft, and a drive of the synchronized meshing device. a selection mechanism that is manually operated by the driver and has predetermined speed selection positions such as park (P), reverse (R), neutral (N), and forward (D); An electronic control circuit that inputs the vehicle running conditions based on the speed selection position of the select mechanism and controls the forward drive means to achieve multiple forward and reverse gear trains and neutrality according to the vehicle running conditions, and stops the engine. and a key switch for controlling communication between a vehicle power source and an ignition device for driving, a control device for a vehicle equipped with a constant mesh automatic transmission, wherein the key switch is used to connect the vehicle power source and the ignition device. A neutral off switch is provided, and the electronic control circuit is configured such that when the vehicle is stopped with the gear position of the automatic transmission set to a position other than the neutral position, the driver operates the key switch to stop the engine. When operated, a neutral off switch is turned on to energize the vehicle power supply and ignition device, and the engine continues to operate until the constant mesh automatic transmission becomes neutral. Control device for vehicles equipped with automatic transmissions. 2. The constant mesh automatic transmission according to claim 1, wherein the drive means includes a power source consisting of a motor and a hydraulic pump, a shift actuator, and a select actuator. Control device for the vehicle equipped with it.