JPH0583472U - Automatic clutch controller - Google Patents

Abstract

(57) [Summary] [Objective] In an automatic clutch device adopting an automatic program control method, stable clutch control is possible, ride comfort is improved, and clutch wear is reduced. [Structure] A program for changing the clutch to a wet clutch in which lubricating oil is sprinkled on a clutch plate, detecting the temperature of the lubricating oil sprinkled on the clutch plate by a temperature detecting means, and controlling the state of clutch engagement according to the detected output Change the control constant of the control means.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle automatic clutch control device that performs program control. In particular, it relates to an automatic clutch control device for a wet clutch.

[0002]

[Prior Art]

 There is known a technique for program-controlling the operation of a vehicle clutch by using a microprocessor. With this method, the clutch meet state is controlled by a computer program that is set in advance so as to be optimal according to the conditions such as the amount of depression of the accelerator pedal and the clutch pedal, the engine speed, and the vehicle speed. The operation is simple, and even an operator with little driving experience can drive properly.

Further, in a vehicle with a wet clutch, when the temperature of the clutch portion rises, the range of the half clutch becomes narrow.

By the way, in the non-automatic clutch device in which the operator directly controls the clutch engagement state, the operator adjusts the pedal depression amount depending on the intuition, so that it is possible to cope with the fluctuation of the torque transmission force.

[0005]

[Problems to be solved by the device]

 However, the conventional automatic program control system cannot follow the change in the torque transmission force described above.

An object of the present invention is to provide an automatic clutch control device which eliminates fluctuations in torque transmission force due to temperature rise of the clutch part, has a good riding comfort, and prevents uneven wear of the fading part.

[0007]

[Means for Solving the Problems]

 According to the present invention, means for detecting the rotation state of the input side rotary shaft of the clutch, means for detecting the rotation state of the output side rotary shaft of the clutch, and the detection output of both means are input to the clutch. In the automatic clutch control device equipped with a program control means for controlling the meet state, the clutch is a wet clutch in which lubricating oil is spread over the clutch plate, and the temperature of the lubricating oil spread over the clutch plate is detected. It is characterized in that the program control means includes means for changing the control constant according to the detection output of the temperature detection means.

[0008]

[Action]

 Information on the oil temperature of the lubricating oil applied to the clutch plate is input to the central control unit, and the control constant is changed accordingly to control the clutch stroke. As a result, the contact state of the clutch can be operated smoothly.

[0009]

【Example】

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of the above embodiment.

In the figure, the torque of the engine E is transmitted to the transmission unit D via the wet clutch WC. For this clutch meet operation, the microprocessor CP operates in response to the output signal of the control signal output means such as a clutch pedal, and drives the solenoid valves SV1 and SV2 via the input / output interface I / O. With these solenoid valves, the cylinder CL moves the lever LV to operate the clutch. In this case, the rotation state of the input-side rotary shaft of the clutch is detected by the speed sensor SS1, and the rotation state of the output-side rotary shaft of the clutch is detected by the speed sensor SS2, which are respectively input to the microprocessor CP and input to the clutch CP. Program control in the meet state is performed.

The feature of the present invention is that a temperature sensor TS for detecting the temperature of the lubricating oil of the wet clutch WC is provided, and the detection output is sent to the microprocessor CP, and the program control is performed according to the detection output. To change the control constant of to control the clutch engagement state.

In FIG. 2, which is an explanatory view of the wet clutch of the present embodiment, the torque of the input side rotating shaft 11 is performed by fading the output side rotating shaft 12 between the clutch disc 13 and the pressure plate 14. The lubricating oil 15 in the oil sump is pumped to the oil tank 17 by the oil pump 16, sprayed to the clutch part from the ejection port 18 through the passages indicated by arrows a and b, and then collected again in the oil sump. Therefore, the temperature of the fading part of the clutch is most balanced with the temperature of the lubricating oil 15 in the oil sump. In this embodiment, the temperature sensor TS is attached to this portion.

A flowchart of the program control according to the present invention is shown in FIG.

When the clutch pedal is depressed, the oil temperature is taken in. At this time, if the oil temperature is higher than the first predetermined value, the half-clutch stroke of the clutch will be shortened, and torque will not be transmitted easily when the control is performed in the normal half-clutch range (symbol 25). Next, if the viscosity of the lubricating oil has dropped significantly due to temperature, shock will occur when the meat is engaged in the normal half-clutch range. In the flow chart of FIG. 3, the predetermined value of the oil temperature has two values, that is, the first value and the second value, but they may have the same value.

Further, in FIG. 2, the mounting portion of the temperature sensor TS is not limited to the lower portion of the oil sump.

In the present invention, the temperature sensor is provided with a third predetermined value in the low temperature range, and when the oil temperature falls below the third predetermined value and the viscosity of the lubricating oil increases, the half-clutch range is corrected and the clutch is corrected. Meet control can also be performed.

[0018]

[Effect of the device]

 As described above, according to the present invention, the half-clutch state can be continued for a long time, and even if the clutch temperature changes, stable clutch control can be performed regardless of the clutch temperature change. is there. This improves riding comfort and reduces clutch wear.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is an explanatory view of a wet clutch according to an embodiment.

FIG. 3 is a program control flowchart of the embodiment.

[Explanation of Codes] CL Cylinder CP Microprocessor D Transmission section E Engine I / O I / O interface LV lever SS1, SS2 Speed sensor SV1, SV2 Solenoid valve SW Control signal output means WC Wet clutch 11 Input rotary shaft 12 Output rotary shaft 13 Clutch disc 14 Pressure plate 15 Lubricating oil in oil sump 16 Oil pump 17 Oil tank 18 Jet port 21-29 Numbers of symbols in flow chart a, b Arrows

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Koji Harada 3-1-1 Hinodai, Hino-shi, Tokyo Hino Motor Co., Ltd. (72) Ryuichi Matsumoto 3-1-1 Hinodai, Hino-shi, Tokyo Hinodai Automobile Industry Co., Ltd. (72) Inventor Mt. Fujiyama 3-1-1 Hinodai, Hino City, Tokyo Hino Automobile Industry Ltd. (72) Yoshio Shirai 3-1-1 Hinodai, Hino City, Tokyo Hino Motors Industrial Co., Ltd. (72) Inventor Masaru Idoguchi 3-1, Hinodai, Hino City, Tokyo 1 In Hino Motor Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A means for detecting a rotational state of an input side rotary shaft of a clutch, a means for detecting a rotational state of an output side rotary shaft of the clutch, and a meet state of the clutch using detection outputs of the both means as inputs. In the automatic clutch control device having a program control means for controlling the above, the clutch is a wet clutch in which lubricating oil is sprinkled on the clutch plate, and temperature detection means for detecting the temperature of the lubricating oil sprinkled on the clutch plate. The automatic clutch control device is characterized in that the program control means includes means for changing a control constant in accordance with a detection output of the temperature detection means.