A dual-clutch transmission hydraulic control system, method and vehicle
A dual-clutch transmission and hydraulic control system technology, applied in transmission control, toothed components, belts/chains/gears, etc., can solve the problems of high energy consumption of oil pumps, poor system economic performance, etc., and reduce system consumption , the total power consumption is small, and the effect of improving economic performance
Active Publication Date: 2020-06-12
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
[0003] The object of the present invention is to provide a dual-clutch transmission hydraulic control system, method and automobile to solve the problems of high energy consumption of the oil pump and poor economic performance of the system in the hydraulic actuator system of the dual-clutch transmission in the prior art
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[0047] refer to figure 1 , the present invention provides a dual-clutch transmission hydraulic control system, including: a transmission control unit TCU, a low-pressure circuit 2 for supplying oil to a lubricating oil circuit 1, the low-pressure circuit 2 is supplied by a low-pressure oil pump 3, and the low-pressure circuit 2 is connected to the transmission The tank control unit is connected to the TCU; the high-pressure circuit 5 is used to supply oil to the shift oil circuit 4, the high-pressure circuit 5 is supplied by the high-pressure oil pump 6, and the high-pressure circuit 5 is connected to the transmission control unit TCU; one-way valve 7, one-way valve 7 It is connected in series between the low-pressure circuit 2 and the high-pressure circuit 5; when the transmission control unit TCU determines that the current operating condition of the car is a driving condition with gears, the transmission control unit TCU controls the low-pressure circuit 2 to adjust the oil ...
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The present invention relates to a double-clutch transmission hydraulic control system, a double-clutch transmission hydraulic control method and an automobile. With the double-clutch transmission hydraulic control system, the double-clutch transmission hydraulic control method and the automobile of the invention adopted, the problems of the high energy consumption of the oil pump of the hydraulicactuator system of a double-clutch transmission in the prior art and the poor system economic performance of the hydraulic actuator system can be solved. The double-clutch transmission hydraulic control system includes a TCU (transmission control unit), a low-pressure loop, a high-pressure loop and a check valve; the low-pressure loop supplies oil to a lubricating oil path; the low-pressure loopis fed through a low-pressure oil pump; the low-pressure loop is connected with the TCU; the high-pressure loop supplies oil to a gear shift oil path; the high-pressure loop is fed through a high-pressure oil pump; the high-pressure loop is connected with the TCU; the check valve is connected in series between the low-pressure loop and the high-pressure loop; when an automobile drives at a certaingear, the TCU controls the low-pressure loop to adjust the oil discharge pressure of the low-pressure oil pump, so that the check valve can disconnect the low-pressure loop from the high-pressure loop; when the automobile shifts a current gear, the TCU controls the low-pressure loop to adjust the oil discharge pressure of the low-pressure oil pump, so that the check valve connects the low-pressure loop to the high-voltage loop, and the low-pressure loop supplies oil to the high-pressure loop.
Description
technical field [0001] The invention relates to the field of automobile hydraulic control, in particular to a dual-clutch transmission hydraulic control system, method and automobile. Background technique [0002] For traditional wet dual-clutch transmissions, its hydraulic actuator system includes filters, oil pumps, hydraulic valve bodies, shift pistons, clutches and other components. The oil pump is the power source of the entire hydraulic actuator system and the power load of the engine. In the prior art, a set of hydraulic actuator system is equipped with a mechanical oil pump. The typical displacement of the mechanical oil pump is greater than 12cc / r, which is driven by the engine to provide pressure and flow for gear shifting, clutch and lubrication. The mechanical oil pump is characterized by low difficulty in designing the oil pump and valve body, simple structure, low cost, and simple manufacturing process. But its disadvantage is that the energy consumption of t...
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IPC IPC(8): F16H61/40F16H61/4008
CPCF16H61/40F16H61/4008
Inventor 刘飞刚夏灵余洪
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD