Control method and device for automatic catch clutch
A clutch and automatic transmission technology, applied in clutches, mechanical equipment, etc., can solve the problem of excessive clutch pressure reduction and achieve the effect of avoiding clutch pressure reduction too fast or too slow
Active Publication Date: 2013-08-21
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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Problems solved by technology
[0003] The purpose of the embodiments of the present invention is to provide a control method and device for an automatic transmission clutch, which solves the problem that the clutch pressure decreases too fast or too slow during the starting process
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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, specific embodiments will be described in detail below with reference to the accompanying drawings.
[0026] A method for controlling an automatic transmission clutch, the method comprising:
[0027] Step 1: The detector determines whether the car is in the starting state;
[0028] Step 2: When the accelerator of the car in the starting state is released, the controller controls the clutch to instantly reset the clutch pressure to zero;
[0029] Step 3: After the clutch pressure returns to zero instantly, the controller closes the loop to control the clutch pressure to increase gradually so that the clutch pressure reaches the requirement of idling driving. In the present invention, when the accelerator is released, the controller controls the clutch to instantly return the clutch pressure to zero, thereby eliminating the process of the clutch pressu...
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The invention relates to a control method and device for an automatic catch clutch. The control method for the automatic catch clutch comprises the steps that a detector determines whether a car is in a starting state or not; when an accelerator of the car in the starting state is loosened, a controller controls the clutch to enable the pressure of the clutch to return to zero instantly; after the pressure of the clutch returns to zero instantly, the controller controls the pressure of the clutch to increase gradually in a closed-loop mode to enable the pressure of the clutch to meet the requirement of idling-speed travel. According to the control method and device for the automatic catch clutch, when the accelerator is loosened in the starting process, the controller controls the clutch to enable the pressure of the clutch to return to zero instantly, so that the process that the pressure of the clutch gradually decreases is eliminated, and the problem that the pressure of the clutch decreases quickly or slowly is solved. After the pressure of the clutch returns to zero instantly, the controller controls the pressure of the clutch to increase gradually in the closed-loop mode to enable the pressure of the clutch to meet the requirement of idling-speed travel.
Description
technical field [0001] The invention relates to a clutch control method and device, in particular to a method and device suitable for controlling the clutch of an automobile whose gas pedal is suddenly released during the starting process. Background technique [0002] During the starting process of an automatic transmission car, if the accelerator is suddenly released, the clutch will return from the starting state to the idling state due to the sharp decrease in engine torque. For the wet clutch, when the car is idling, the wet clutch is in a slipping (semi-clutch) state. Therefore, the process of the clutch changing from the starting state to idling is the process of reducing the clutch pressure. At present, due to the limitation of the characteristics of the solenoid valve, it is difficult to realize the closed-loop control in the process of pressure reduction. This also brings great difficulties to the reduction control of clutch pressure. If the speed of clutch pressu...
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IPC IPC(8): F16D48/06
Inventor 何麒瑜金吉刚杨安志冯擎峰
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD