Clutch hydraulic control device of double-clutch automatic transmission

Abstract

The invention provides a clutch hydraulic control device of a double-clutch automatic transmission, belonging to the technical field of automobile clutches. The clutch hydraulic control device is beneficial to the solution to the technical problem that in the prior art, the pressure-proportion solenoid valve is easy to put into two gears to cause an automobile to be destroyed while the pressure-proportion solenoid value has faults. The clutch hydraulic control device of the double-clutch automatic transmission comprises an oil tank, an oil pump, a pressure-proportion solenoid valve 1, a pressure-proportion solenoid valve 2 and a directional control valve 1, wherein oil outlets of the pressure-proportion solenoid valve 1 and the pressure-proportion solenoid valve 2 are respectively connected with a clutch 1 and a clutch 2 through the directional control valve 1; the directional control valve 1 is provided with an unloading port which is connected with the oil tank; an oil outlet of the oil pump is also connected with a pressure regulating unit which can regulate oil pressure at the oil outlet of the oil pump. The clutch hydraulic control device is beneficial to the prevention of the automobile from being destroyed because two gears are simultaneously put into, thereby ensuring that the safety of a double-clutch system is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of automobile transmissions, and relates to a dual-clutch automatic transmission, in particular to a clutch hydraulic control device for a dual-clutch automatic transmission. Background technique [0002] Today, with the increasing popularity of automobiles and the continuous development of automobile technology, customers' requirements for automobiles are becoming more and more stringent. Dual-clutch automatic transmissions have been accepted by the market and customers, and the pressure control accuracy of the clutch is required to be high. At present, pressure proportional solenoid valves are generally used for clutch oil pressure control. [0003] As disclosed in the patent (CN101858431A), a hydraulic device for shifting gears of a dual-clutch automatic transmission includes an odd-numbered gear hydraulic control system connected to clutch one and an even-numbered gear hydraulic control system connected ...

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, if no safety protection measures are added when designing the clutch control system, it is easy to engage two gears and cause the car to be destroyed. Therefore, it must be considered that when the pressure proportional solenoid valve fails, the car can drive home normally.

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