Double-clutch automatic transmission shift control method
A technology of automatic transmission and control method, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., can solve the problem of not being able to control the engine independently, and improve the ride comfort and shift quality. , The effect of smooth shifting process
Active Publication Date: 2014-04-09
ZHEJIANG WANGLIYANG TRANMISSION CO LTD
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Problems solved by technology
At present, the control of the engine speed is mainly through the communication between the transmission control unit and the engine control unit, and it is realized through bus data exchange according to the predetermined communication protocol. control, with very limited
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[0032] In the engine speed control method of the present invention, the transmission controller is serially connected between the original accelerator pedal and the engine control line, and the transmission controller performs A / D sampling on the position signal of the accelerator pedal. Then output the corresponding voltage signal through D / A conversion to achieve the purpose of indirectly controlling the engine speed.
[0033] The control timing of the engine speed is during the gear shifting process, when the clutch of the previous gear is disengaged and the clutch of the next gear is slipping, it is in the sliding friction phase phase, so as to adapt to the change of the input shaft speed of the next gear. Wherein, in the process of upshifting, it is necessary to reduce the value of the throttle opening to realize the deceleration of the engine. In the process of downshifting, it is necessary to increase the value of the throttle opening to realize the engine speed up. Wh...
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The invention belongs to an automotive transmission and in particular discloses a double-clutch automatic transmission shift control method. The method is characterized in that: a duty ratio of a solenoid valve for controlling the engagement and separation of clutches in a double-clutch automatic transmission is adjusted to control a matched timing sequence of two clutches and respective joint speed and joint pressure thereof in the shifting process, so that the sum of transmission torque of a front clutch and a subsequent clutch adapts to the torque of an engine in the shifting process; and a shifting moment and a corresponding shift method are determined according to an accelerator pedal position signal acquired by a sensor, the rotating speed of the engine, the rotating speed and a clutch pressure signal of an input shaft of the front clutch and the rotating speed and a clutch pressure signal of an input shaft of the subsequent clutch. By the method, the shifting process is stable and rapid, the shifting quality is high, and the riding comfort is improved.
Description
technical field [0001] The invention belongs to the category of transmissions, in particular to a shift control method for a dual-clutch automatic transmission. Background technique [0002] The main goal of shift control of dual-clutch automatic transmission is to achieve smooth and fast power shift and improve ride comfort under the premise of realizing its basic functions. From the analysis of the shifting process of the dual-clutch automatic transmission, it can be seen that when the clutch of the previous gear is disengaged and the clutch of the next gear is slipping, due to the difference in the transmission ratio of the two gears, in order to make the vehicle speed during the shifting process Smooth changes without obvious impact. During this process, the engine speed must be effectively controlled to match the input shaft speed of the next gear. At present, the control of the engine speed is mainly through the communication between the transmission control unit and ...
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IPC IPC(8): F16H61/02F16H61/684
Inventor 夏伟强刘国强于德泽孙伟任华林郭晓林陈德民陆晓平王峰麻越垠
Owner ZHEJIANG WANGLIYANG TRANMISSION CO LTD