JPH08296670A - Clutch control device - Google Patents

Abstract

PURPOSE: To stiffen the mechanism of a clutch control device, and reduce the price by combining the hydraulic system of a master cylinder with the hydraulic system of a sub master cylinder of the clutch control device by a three-port valve, and integrating a release cylinder to simplify the mechanism of the clutch control device. CONSTITUTION: A clutch 1 is controlled by using a three-port valve 20 to switch the hydraulic systems 4, 9 of a master cylinder and the hydraulic systems 11, 15 of a clutch control device to integrate a release cylinder 3. When the hydraulic system is switched, the oil amount is kept constant so as to prevent the transfer of the oil to/from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to vehicle clutch control.

[0002]

2. Description of the Related Art In the conventional clutch control, as shown in FIG. 2, a release cylinder (3) driven by a master cylinder (5) and a release cylinder (1) driven by a sub-master cylinder (12) of a clutch control device.
0) is independent, and two sets of release cylinders are required, and the mechanism is complicated.

[0003]

By switching between the hydraulic system driven by the master cylinder and the hydraulic system driven by the sub-master cylinder of the clutch control device, the hydraulic system is connected to one release cylinder to simplify the mechanism. measure. At that time, it is necessary to take measures so that the oil amounts of both are not mixed and always constant.

[0004]

In order to solve the above problems, as shown in FIG. 1, (a) the hydraulic system is switched by using a three-port valve (20). (B) The 3-port valve works in conjunction with the power supply of the clutch control device,
When the power is off, the oil is normally open, the oil flow is (A), and the master cylinder operates the clutch. The flow of oil when the clutch control device is powered on is (B), and the clutch operation is performed by the sub master cylinder. (C) The condition for turning on the power of the clutch control device is that the limit switch (18) of the clutch petal (7) is activated and is in a contact state, that is, the human foot is reliably separated from the clutch petal. Is. (D) The condition for turning off the power of the clutch control device is that when the power switch is turned off, the power is turned off after the clutch is in the contact state, that is, the sub master cylinder of the clutch control device is surely in the contact position. That is. (E) Other Embodiments As shown in FIG. 4, the number of oil replenishers can be integrated into one, so that even if the amounts of both oils move, they can always return to a constant level. (F) When the clutch controller is powered on, if the driver accidentally depresses the clutch petal (7), an alarm is provided to notify the driver.

[0005]

The operation of the present invention will be described using a flow chart. In the flowchart of FIG. 5, the flow (50) starts. When the power switch of flow (51) is turned off, the 3-port valve of flow (52) is not excited and is operated by the clutch petal side. When it is turned on, the clutch position of flow (53) is confirmed and if it is not in the contact position, the flow ( 54) The clutch petal is opened and brought into the contact position, and the clutch control device power supply for flow (55) is turned on.
Energize the 3 port valve of 6) and switch to the operation by the clutch control device side. Next, when the flow (57) power switch is turned off, the clutch immediately moves to the contact position in flow (58) to turn off the clutch controller power supply, and at the same time, the 3-port valve of flow (59) is de-energized to the clutch petal. Switch to the operation by the side. Flow (60) is the end.

[0006]

【Example】

Example 1 Example 1 will be described with reference to FIGS. (A) FIG. 1 shows a hydraulic system of a master cylinder (5) operated by a clutch petal (7) and a hydraulic system of a sub-master cylinder (12) operated by another power (14).
A method of controlling the clutch (1) by driving the release cylinder (3) by selectively switching through a port valve (20) is shown. (B) FIG. 3 shows the control of the 3-port valve (20) and the power supply operation of the clutch control device (37). When the power switch (31) of the clutch control device is turned on, if the clutch petal is in the open state and the limit switch (18) is on, the transistor (33) activates the relay (34) and the contact (35). The 3-port valve (20) is excited to switch to the hydraulic connection of the clutch control device, and at the same time, the power supply of the clutch control device is turned on. At that time, the memory circuit (41) locks the transistor (33).
In this state, if the limit pedal (18) is turned off by depressing the clutch petal, the knot circuit (42) gives an alarm. When the power switch (31) is turned off, the MS signal of the knot circuit (43) moves the clutch in the contact direction, and when the SF signal is output at the contact position of the clutch, the output of the AND circuit (44) causes the storage circuit (41) to open. Reset and power off. That is, the condition for turning on the power is that the clutch petal is open, and the condition for turning off the power is that the clutch is in the contact position. In the figure, (R1, R
2) is a resistor, (C1) is a capacitor, (40) is a clutch control circuit, and (45) is an interface.

Example 2 A measure for keeping the oil amount constant will be described with reference to FIG. By unifying the oil supply from the replenisher (25) through the pipe (26), the oil amounts in the master cylinder (5) and the sub-master cylinder (12) are kept constant. In other words, the oil in the system is transferred to another system by a small amount due to the operation of the 3-port valve, but this is a measure to make it constant again.

[0008]

The following effects are obtained by using the 3-port valve in the clutch control device. (B) Since the mechanism of the clutch control device can be simplified, the structure is robust. (B) It becomes easy to make this device optional. (C) The price of this device is reduced. (D) Since the clutch petal side and the clutch control device side are completely switched and locked and operated, there is no mutual interference. Etc.

[Brief description of drawings]

FIG. 1 is an operation explanatory view of the first embodiment of the present invention, showing a clutch engagement state.

FIG. 2 is an operation explanatory diagram of a conventional technique, showing a clutch engagement state.

FIG. 3 is a power supply circuit diagram of the present invention, showing an operation circuit of a 3-port valve and a clutch control device.

FIG. 4 is a piping diagram of Embodiment 2 of the present invention, showing piping of a replenisher.

FIG. 5 is a flow chart of the present invention showing the operation of the 3-port valve and the clutch control device.

[Explanation of symbols]

 A Flow of oil when operating on the clutch petal side B Flow of oil when operating on the clutch control device side 1 Clutch 2 Shifter fork 3 Release cylinder 4 Pipe (for hydraulic pressure) 5 Master cylinder 6 Oil replenisher 7 Clutch petal 8 Human foot 9 Clutch petal mechanism 10 Release cylinder 11 Pipe (for hydraulic) 12 Sub-master cylinder 13 Oil replenisher 14 Power cylinder 15 Power cylinder mechanism 18 Limit switch 20 3 port valve 25 Oil replenisher 26 Pipe (for hydraulic)

Claims (1)

[Claims] 1. A hydraulic system for a master cylinder, which is driven by stepping on a clutch petal with a human foot, and a hydraulic system for a sub-master cylinder, which is driven by another power source.
A clutch control device that switches via a 3-port valve and transmits to the release cylinder.