JPS5833381B2 - Boost Compensator Tatsuki Governor Sochi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a governor device with a boost compensator installed in a Bosch type injection pump.

The boost compensator has the following two functions.
They are used differently depending on their purpose.

(1) It is attached to the injection pump governor of a supercharged engine, and when the amount of intake air sent into the cylinder increases due to the action of the supercharger, it injects an appropriate amount of fuel commensurate with the increase.
Measure the output increase.

(2) When the engine runs at low speed or accelerates rapidly, the amount of air sent to the cylinder is small, so the amount of fuel injection is reduced to prevent deterioration of exhaust color and rise in exhaust temperature.

Now, when the engine speed increases due to the action of the supercharger and the boost pressure (intake pipe pressure) increases, the diaphragm b of the boost compensator a moves to the left as shown in Figure 1, and the bushing rod C also moves to the left.

Due to this movement of the bushing rod C, the lever d moves counterclockwise as shown by the dotted line around the fulcrum A, and the link e
The fulcrum B of B'KC moves to C'.

At this time, the floating dropper f moves counterclockwise around the fulcrum, and at the same time the control rack g moves to the left, that is, in the direction of fuel increase, by the movement stroke of the boost compensator a, regardless of the action of the governor. It is possible to overfill the fuel.

Therefore, when the boost compensator a is attached to the governor, the governor characteristics are as shown in Fig. 2. When the boost pressure reaches the specified pressure, the governor moves the rack by more than the amount of rack movement determined by the full load stopper bolt h to reduce the injection amount. can be increased.

When the intake air amount of the engine is small, that is, when the boost pressure is low, the effect is opposite to the above.

However, the movement of the boost compensator a due to the movement of the shifter I and the tension lever j is not controlled.

Therefore, when the engine's boost pressure reaches the boost compensator center pressure during medium to high-speed idling, the boost compensator spring and bushing rod may become unstable, causing hunting.

The present invention was made in view of the above circumstances, and its purpose is to control the movement of the boost compensator during low, medium, and high-speed idling by the movement of the shifter or tension lever, thereby making the engine operate smoothly. To provide a governor device with a boost compensator.

The present invention will be explained below with reference to FIGS. 3 to 6.

Reference numeral 1 in the drawings indicates a boost compensator lever, and this lever 1 is tiltably attached to the mounting body with a pin 2 at the bottom.

The upper end of the boost compensator lever 1 is connected to a push rod 4 of a diaphragm 3.

Link 5 is attached to the lower end of boost compensator lever 1.
It is connected to the lower part of the floating rear par 6 via.

The floating teardropper 6 is tiltably attached to the mounting body by a pin 7 at the center.

The upper end of the floating winder par 6 is connected to a rack 9 via a link 8.

The floating winder par 6 is biased counterclockwise by a start spring 10.

A guide lever 11 is pivotally supported at a pivot point, that is, a pin 7 of the floating lever 6, and the upper end of a tension lever 12 is attached to the upper end of the guide lever 11 with a pin 13.

The tension lever 12 and the lever 14 are connected by a main spring 15, and a control lever 16 is attached to the lever 14.

A shifter 17 abuts against the lower end of the tension lever 12, and the shifter 17 is connected to the flyweight 19 of the governor 18.
It is in contact with the lever 20 of.

The lower end of the guide lever 11 is attached to the shifter 17 with a pin 21.

A locking lever 23 is tiltably attached to the mounting body with a pin 24. A long hole 25 is formed in the upper part of the locking lever 23, and a pin 21 is inserted into the long hole 25.

Notches 26 and 27 are formed in the locking lever 23, and one of the notches 26 is provided with the floating lever 6.
The pin 28 at the lower end is engaged.

29 in the drawing is a full load stopper.

However, at low idling, the fly weight is 19
The centrifugal force pushes the shifter 17 to the right, and the idle sub-spring and start spring 10 push the shifter 17 to the left against the centrifugal force, and these forces are balanced.

At this time, the tension lever 12 is moved to the full-rotation stopper 29.
It is not true.

The locking lever 23 is pin 2 of the floating lever 6.
8 is engaged with the notch 26, and prevents movement of the rack 9 due to changes in tooth pressure.

(See Fig. 4) Next, as shown in Fig. 5, when the control lever 16 is tilted to the left, the tension lever 12 is moved to the left by the main spring 15, and the full load stopper 29 is moved to the left.
Push the shifter 11 to the left and rotate the locking lever 23 counterclockwise to remove the pin 28 at the tip of the floating lever 6 from the notch 26.

Therefore, the floating cylinder par 6 moves due to the change in boost pressure, which moves the rack 9 so that the boost pressure controls the injection amount.

During medium or high-speed idling, the control lever 16 is tilted to the left as shown in Fig. 6. This causes the main spring 15 to move the tension lever 12 to the left and push the shifter 17 to the left, but since the pump rotation is high, the fly weight 19 is Push the opening shifter 17 to the right against the above force, rotate the locking lever 23 clockwise, and engage the pin 28 of the floating lever 6 with the notch 27 to prevent the rack 9 from moving due to boost pressure. do.

The present invention has been described in detail above, and the boost compensator lever 1 whose upper end is rotatably connected to the bushing rod 4 of the diaphragm 3 is tiltably provided on the mounting body, and the guide lever 11 is tiltable on the mounting body. At the same time, a rack 9 is provided at the pivot point of the guide lever 11 to the mounting body.
A floating tilter par 6 connected to is provided in a tiltable manner,
The lower part of the floating winder par 6 is connected to the lower part of the boost compensator lever 1 via the link 5, and the lower end of the guide lever 11 is rotatably connected to the shifter 17 with a pin 21. A tension lever 12 is provided to be swingable, and a lever 14 provided on the mounting body and rotated by a control lever 16 is connected to the tension lever 12 by a main spring 15, so that the lower part of the tension lever 12 collides with a shifter 17. ,
A locking lever 23 is tiltably provided on the mounting body, and a long hole 25 is formed at the upper end of the locking lever 23, and a notch 26.2 is formed at the lower side of the locking lever 23.
7 is provided, and the shifter 1 is inserted into the long hole 25 of the locking lever 23.
7, a pin 28 is provided at the lower end of the floating lever 6, the pin 28 is removably engaged with the notch 26, 27 of the locking lever 23, and the floating lever is inserted. 6 is biased counterclockwise by the start spring 1o, the movement of the boost convencator can be controlled by the movement of the shifter 17 or tension lever 12 during low, medium, and high-speed idling, and the engine operates smoothly. be able to.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a conventional mechanical governor with a boost compensator, Fig. 2 is a governor characteristic diagram, Fig. 3 is a partially omitted configuration diagram of an embodiment of the present invention, and Figs. 4 to 6 are This is a diagram showing the key to the subject. 6 is a floating lever, 9 is a rank, 12 is a tension lever, 17 is a shifter, 23 is a locking lever 2
5 is a long hole, 26.27 is a notch, and 28 is a pin.

Claims (1)

[Claims] 1 A boost compensator lever 1 whose upper end is rotatably connected to a bushing rod 4 having a diaphragm 3 is tiltably provided on the mounting body, and a guide lever 1 is provided on the mounting body.
1 is provided so as to be tiltable, and at the pivot point on which the guide lever 11 is attached to the mounting body, a floating winder par 6 connected to the rack 9 is tiltable. Compensator lever 1
The lower end of the guide lever 11 is rotatably connected to the shifter 11 with a pin 21, a tension lever 12 is provided on the guide lever 11 so as to be movable, and a control lever provided on the mounting body The lever 14 rotated by the lever 16 and the tension lever 12 are connected by the main spring 15, the lower part of the tension lever 12 collides with the shifter 11, and the locking lever 2 is attached to the mounting body.
A long hole 25 is formed in the upper end of the locking lever 23, and notches 26 and 27 are provided in the lower part of the locking lever 23.
3, insert the pin 21 provided in the shifter 17 into the long hole 25 of the locking lever 23, provide the pin 28 at the lower end of the floating lever 6, and insert the pin 28 into the notch of the locking lever 23. 26.27
1. A governor device with a boost compensator, characterized in that the floating lever 6 is biased counterclockwise by a start spring 10.