Hydraulic device for gear shift of double-clutch automatic transmission

Abstract

The invention provides a hydraulic device for gear shift of a double-clutch automatic transmission, which belongs to the technical field of machinery and solves the problems of more execution elements of a gear shift system of the conventional double-clutch automatic transmission, high cost and complex system control. The hydraulic device for the gear shift of the double-clutch automatic transmission is arranged in the double-clutch automatic transmission provided with a first clutch and a second clutch, and comprises an odd gear hydraulic control system connected with the first clutch and an even gear hydraulic control system connected with the second clutch; an odd gear reversing valve capable of switching an oil flow direction is arranged in the odd gear hydraulic control system; an even gear reversing valve capable of switching the oil flow direction is arranged in the even gear hydraulic control system; the device also comprises a control valve connected with the odd gear reversing valve and the even gear reversing valve at the same time; and the control valve can drive the odd gear reversing valve and the even gear reversing valve to shift the gear. The gear shift system of the double-clutch automatic transmission has the advantages of few execution elements and low cost.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a hydraulic device, in particular to a hydraulic device for shifting gears of a dual-clutch automatic transmission. Background technique [0002] Dual clutch transmission (Dual Clutch Transmission) DCT is different from the general automatic transmission system. It is based on a manual transmission and is an automatic transmission. In addition to the flexibility of a manual transmission and the comfort of an automatic transmission, it can also provide uninterrupted power. output. The traditional manual transmission uses a clutch. When changing gears, the driver has to step on the clutch pedal to engage the gears of different gears, and the power is interrupted during the gear shifting, which makes the output performance intermittent. . [0003] The DCT contains two automatically controlled clutches, which are electronically controlled and hydraulically driven, and can simultane...

AI Technical Summary

Problems solved by technology

At present, there are many hydraulic actuators in the gear shifting system of cars using dual-clutch automatic transmissions, which increases the cost and complexity of the system to a certain extent.

Obviously, the prior art has the following disadvantages: the dual-clutch automatic transmission shift system uses more actuators, which increases the cost and complexity of system control

[0006] For example, the "hydraulic control device for automatic dual-clutch transmission" provided by Chinese patent CN1936376A has a first regulating valve, a second regulating valve, a switching valve unit, etc., because the switching valve unit has a complex structure, so it still has a whole system complex issues

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