JPS6246590Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a half clutch position detection device for a vehicle clutch.

In recent years, efforts have been made to automate the clutch in order to reduce the burden on the driver by eliminating the need to operate the clutch pedal and accelerator pedal in conjunction with each other when starting the vehicle, and the clutch operation when shifting gears. One example is a system in which the supply of operating pressure to a clutch operating cylinder is controlled in conjunction with a shift operation to automatically engage and engage the clutch.

By the way, in the clutch operation, when the clutch is to be engaged, it is necessary to perform a so-called half-clutch operation in which the area from the beginning to the end of the clutch engagement is gradually connected.

However, although a conventional technique for detecting the end of engagement of a clutch has been disclosed in Japanese Patent Publication No. 53-26020, there is no technique for detecting a half-clutch region from the beginning of engagement to the end of engagement. Therefore, the clutch operation in areas other than the half-clutch area is performed at a slow speed, resulting in a problem that the clutch operation time becomes long.

This idea was made in view of the above circumstances.
The beginning of clutch engagement is detected based on the stroke position of the clutch operation cylinder, and the end of clutch engagement is detected based on the difference in rotational speed between the clutch drive shaft and the clutch driven shaft. A half-clutch position that detects the half-clutch region up to and controls the clutch operating cylinder so that the clutch operating speed in the half-clutch region is slower than the clutch operating speed in both regions before the start of clutch engagement and after the end of clutch engagement. It is an object of the present invention to solve the conventional problems by providing a detection device.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

In Fig. 1, 1 is an engine, 2 is a transmission,
3 is the rear wheel. A clutch 4 is interposed between an engine output shaft 1A as a clutch drive shaft and a main drive shaft 2A of the transmission 2 as a clutch driven shaft.

Reference numeral 5 denotes a first rotation speed sensor as a first rotation speed detection means, which detects the rotation speed of the engine output shaft 1A from a ring gear on the outer periphery of the flywheel. 6
A second rotation speed sensor serves as a second rotation speed detection means, and detects the rotation speed of the main drive shaft 2A from the gears of the transmission. Reference numeral 7 designates a stroke sensor as a stroke position detecting means for detecting the stroke position of the clutch operating cylinder, and as shown in FIG. 2, the rod 1 of the operating cylinder 9 is connected to the outer lever 8 of the clutch body.
It is configured such that a displacement of 0 is converted into an electric signal by a potentiometer 7B via a link mechanism 7A. The outputs of both rotational speed sensors 5, 6 and stroke sensor 7 are input to a control unit 11 as a detection means for detecting a half-clutch state. This control unit 11 detects the beginning of engagement of the clutch based on the output of the stroke sensor 7, and detects the end of engagement of the clutch based on the difference between the respective outputs of both rotational speed sensors 5 and 6, that is, the difference in detected rotational speed. By detecting this, the half-clutch region from the beginning of clutch engagement to the end of engagement is detected.
In addition, 12 in FIG. 2 is an operating pressure supply path to the operating cylinder 9.

Next, the effect will be explained.

In the clutch connecting operation, when the operating pressure of the operating cylinder 9 is gradually exhausted, the rod 10 of the cylinder 9 begins to stroke.
The stroke of the rod 10 is transmitted to the potentiometer 7B via the link mechanism 7A, and an output voltage corresponding to the stroke amount of the rod 10 is input from the potentiometer 7B to the control unit 11. Then, the output voltage is applied to the clutch 4.
When the clutch 4 reaches a predetermined set voltage value V ₀ based on the rod position at which engagement begins, the control unit 11 determines that the clutch 4 has begun to engage (see FIG. 3).

On the other hand, regarding the detection of the end of the connection, the first rotation speed sensor 5 and the second rotation speed sensor 6 detect the engine output shaft 1A and the main drive shaft 2A, respectively.
An output corresponding to each rotational speed is input to the control unit 11. As the clutch is engaged, the rotational speeds of the two approaches, so the difference between the two rotational speeds is determined, and when this difference becomes approximately zero, it is determined that the clutch 4 has finished engaging (see Figure 4). ).

As shown in FIG. 5, in the clutch operation area from the start of the clutch connection operation until the initial engagement position of the clutch 4 is detected, and in the clutch operation area after the engagement end position of the clutch 4 is detected, the operation cylinder is 9 to make the rod stroke speed as fast as possible, and in the half-clutch region from detecting the beginning of engagement to detecting the end of engagement, the operating pressure to operating cylinder 9 is appropriately controlled. The control unit 1 as a control means is configured so as to obtain a rod stroke speed as required which is slower than both of the above-mentioned ranges.
1 controls the supply of operating pressure to the operating cylinder.

Therefore, the time required for engaging the clutch can be shortened and drivability can be improved.

As described above, according to the present invention, the half-clutch region during the clutch engagement operation is detected, the clutch operation speed in this half-clutch region is appropriately controlled, and the clutch operation speed is controlled in the clutch operation region other than the half-clutch operation. Since the speed has been made faster, the time required to engage the clutch can be greatly shortened, and drivability can be improved. Furthermore, since the stroke position is detected using a potentiometer method, it is advantageous in terms of installation space and is more practical than a method that reciprocates in the stroke direction.

[Brief explanation of drawings]

FIG. 1 is a simplified configuration diagram showing one embodiment of the present invention;
Figure 2 is a detailed diagram of the stroke sensor of the same embodiment as above, Figure 3 is a graph explaining the detection of the beginning of clutch engagement, Figure 4 is a graph explaining the detection of the end of clutch engagement, and Figure 5 is when the present invention is applied. 3 is a graph showing the cylinder stroke speed state during the clutch connection operation of FIG. 1A... Engine output shaft, 2A... Main drive shaft, 4... Clutch, 5... First rotation speed sensor, 6... Second rotation speed sensor, 7... Stroke sensor, 9... Cylinder for clutch operation ,
10... Rod, 11... Control unit.

Claims (1)

[Scope of utility model registration request] In a vehicle clutch that engages and engages the clutch via a clutch operating cylinder connected to the clutch body, a potentiometer connected to the rod of the clutch operating cylinder via a link mechanism converts the displacement of the rod into an electrical signal. Stroke position detection means for converting and detecting the stroke position of the rod, first rotation speed detection means for detecting the rotation speed of the clutch drive shaft, and second rotation speed detection means for detecting the rotation speed of the clutch driven shaft. detecting the beginning of engagement of the clutch based on the output of the stroke position detection means and detecting the end of engagement of the clutch based on the difference between the rotational speeds detected by the two rotational speed detection means, and moving from the beginning of engagement to the end of engagement. A detection means for detecting a half-clutch region, and a clutch operation cylinder configured to make the rod stroke speed in the half-clutch region slower than the rod stroke speed in both regions before the clutch starts to engage and after the clutch is engaged. A half-clutch position detection device for a vehicle clutch, comprising a control means for controlling the clutch.