JPS5918121Y2 - Automobile throttle valve control device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for controlling a throttle valve in an automobile equipped with an automatic transmission control device.
1) The throttle valve is operated in conjunction with the accelerator pedal when a gear change operation is not performed, and (2) the throttle valve operates independently of the accelerator pedal when a gear change operation is performed.

In a car that automatically shifts gears simply by operating the accelerator and brake pedals, for example, when accelerating by increasing the amount of pressure on the accelerator pedal, the engine speed may change in relation to the gear at that time. When a value suitable for upshifting to the next gear is reached, the clutch is automatically disengaged and the transmission is shifted up.

However, since the clutch is disengaged regardless of the driver's intention, if the accelerator pedal and throttle valve are directly connected, the engine speed will rise abnormally while the clutch is engaged, making upshifting impossible.

Therefore, in the automatic shift control system, it is necessary to control the throttle valve regardless of the amount of depression of the accelerator pedal during a shift operation.

In this case, the control method is to move the throttle valves to the closed position at the same time as the clutch fluid temperature, or to set the throttle valve to a slightly larger opening than the idling opening in order to slightly increase the engine speed during the downshift process, etc. Adjustments may need to be made.

The present invention aims to provide a thrower I/le valve control device that can meet the above requirements, and will be explained below with reference to the drawings.

In the figure, a cylinder 1 is provided with an accelerator rod 2 concentrically, and the tip of the accelerator rod 2 is connected to an accelerator pedal 4 via a pin 3.
is connected to.

5 is a fulcrum of the accelerator pedal 4.

A piston 6 slidably fitted into the cylinder 1 is provided with a throttle rod 7 concentrically, and the throttle rod 7 passes through a sill hole 8 of the cylinder 1 and is connected to the throttle valve via pins 9, 10 and a throttle rod 17'. 12 arm 1
Connected to 3.

14 is an intake pipe of the engine. Coil springs 17, 18 are contracted in the left and right working chambers 15, 16 divided by the piston 6, so that the piston 6 is normally held elastically in the neutral position shown.

The coil springs 17 and 18 have such rigidity that they will not be compressed by the operating force of the accelerator pedal 4. Therefore, when the accelerator pedal 4 is depressed in the direction of arrow A, the cylinder 1 and the piston 6 move as shown in the figure without changing their relative positions. The throttle valve 12 moves to the left and rotates in the direction of arrow A', increasing the valve opening.

An inlet/outlet 20 of the working chamber 15 is connected to an inlet/outlet 23 of a solenoid valve 22 through a passage 21, and an inlet/outlet 24 of the valve 22
is connected to an air pressure source 26 through a passage 25.

The inlet/outlet 27 of the other working chamber 16 is connected via a passage 28 to an inlet/outlet 30 of a solenoid valve 29, and the inlet 31 of the valve 29 is also connected to the air pressure source 26 via a passage 32.

Each valve 22.29 is connected via a signal path 33.34 to a calculation circuit 35 and is actuated by a signal from the calculation circuit 35.

The calculation circuit 35 is activated during a speed change operation, and when the opening degree of the throttle valve 12 during the speed change operation is too large, it energizes the solenoid valve 22 and controls the throttle valve opening degree to a value that allows a predetermined engine speed to be obtained.

That is, when the solenoid valve 22 is energized, the inlet 24 and the outlet 23 are connected, air pressure is supplied to the working chamber 15, the piston 6 protrudes to the right against the elasticity of the spring 18, and the throttle valve 12 is thereby moved in the reverse direction A'. Rotate in the direction to close.

If the throttle valve 12 is closed too much, the engine speed drops below a predetermined value, so the signal to the valve 22 is cut off, and the piston 6 attempts to return to the neutral position due to the elasticity of the spring 18.

In this way, the solenoid valve 22 and the working chamber 15 function to keep the throttle valve 12 open less than the amount corresponding to the amount of depression of the accelerator pedal 4.

If the throttle valve opening is insufficient during upshift operation, the calculation circuit 35 energizes the valve 29;
The inlet 31 and outlet 30 of the valve 29 are connected, and the working chamber 1
6 is supplied with air pressure, the piston 6 moves to the left in the figure against the elasticity of the spring 17, and the opening degree of the throttle valve 12 increases.

The opening degree of the throttle valve 12 is maintained at a value that allows the engine rotation speed specified by the calculation circuit 35 to be obtained.

When embodying the present invention, without providing the calculation circuit 35,
The circuit can also be configured such that the opening degree of the throttle valve 12 is reduced by energizing the solenoid valve 22 and de-energizing the solenoid valve 29 during gear shifting.

In that case, the thrower I/le valve 12 automatically rotates toward the closing side regardless of the movement of the accelerator pedal 4, making gear shifting easier.

After completing the gear shift, de-energize both valves 22 and 29 and tighten screw I.
- Hold the engine 6 in the neutral position.

Therefore, except when shifting gears, that is, when no gear shifting signal is given,
The spacing between pins 3°9 remains unchanged.

That is, the movement of the accelerator rod 2 is directly transmitted to the throttle valve 12.

As explained above, according to the present invention, the throttle valve 12 can be controlled regardless of the accelerator pedal 4 during gear shifting.

Moreover, the throttle valve 12 can be controlled in conjunction with the accelerator pedal 4 except when shifting gears.

Thereby, reliable operation of the automatic transmission control device can be ensured.

Moreover, since the structure is simple, it can be easily installed in any car model, and adjustment according to the car model is also easy.

In particular, in the present invention, the working chambers 15 on both sides of the piston 6.
16 are connected to the pressure source 26 through a solenoid valve 22 for reducing the opening which is energized and opens when the throttle valve opening is too large, and a solenoid valve 29 for increasing the opening that is energized and opens when the throttle valve opening is insufficient. However, one of the solenoid valves 22 and 29 is opened in response to a signal from the calculation circuit 35 during a shift operation, and the throttle valve 12 is rotated to the closed position or the desired opening, so that the engine rotational speed is reduced during a shift I/up operation. Lower, Schiff 1~
During the downstroke, the set of working chamber 15 and solenoid valve 22 and the set of working chamber 16 and solenoid valve 29 work in a shared manner to slightly increase the engine speed, and the throttle valve is controlled in an optimal sequence over the entire operating range. You will be able to do this.

Also, since the movable cylinder 1 and one piston 6 therein form one working chamber 15, 16 on each side of the piston 6, the number of solenoid valves can be reduced to two, resulting in a simple structure. become

[Brief explanation of drawings]

The figure is a schematic structural diagram of the device according to the present invention. noid valve, 26... Air pressure source (pressure source).

Claims (1)

[Scope of utility model registration request] A cylinder is connected to one of the accelerator rod connected to the accelerator pedal and a throttle rod connected to the throttle valve of the engine, and a piston inserted into the cylinder is connected to the other, and coil springs are installed in the working chambers on both sides of the piston. The piston is elastically supported in the normal neutral position by contracting, and each working chamber is energized to open when the throttle valve opening is too large, and the opening reduction solenoid valve is energized when the throttle valve opening is insufficient. It is connected to a pressure source through a solenoid valve for increasing the opening, and when a gear shift operation is performed, one solenoid valve is opened by a signal from a calculation circuit, and the throttle valve is rotated to the closing position or desired opening. A featured automobile throttle valve control device.