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Hydraulic control system of dual-clutch automatic transmission

A technology of hydraulic control system and automatic transmission, which is applied in transmission control, transmission, fluid transmission, etc., can solve the problems of difficult spring assembly, poor system reliability, reduced system efficiency, etc., and achieves improved reliability and reliable return. , Solve the effect of reliable return

Active Publication Date: 2011-01-12
CHONGQING TSINGSHAN IND
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AI Technical Summary

Problems solved by technology

[0004] In practical application, it is found that the method of using the spring return of R gear has the following disadvantages: when the spring stiffness is large, the oil pressure of the R gear shift cylinder is correspondingly increased, which reduces the efficiency of the system, and the spring assembly is also difficult; when the spring The rigidity is small, and the reliable return of the R gear cannot be guaranteed, and the reliability of the system is poor. Therefore, it is necessary to improve the control method of the reverse gear back to empty

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  • Hydraulic control system of dual-clutch automatic transmission
  • Hydraulic control system of dual-clutch automatic transmission

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Embodiment Construction

[0014] Such as figure 1 As shown, the dual clutch automatic transmission hydraulic control system includes a clutch control module 1054 for selectively and independently shifting each clutch, a shift control module 1055 for driving synchronizer shifts of the transmission, and a clutch cooling module for controlling clutch cooling. The hydraulic clutch cooling module 1056, the shaft cooling module 1057 used to control the shaft cooling fluid inside the transmission, and the main pressure regulating module 1058 used to adjust the pressure of the entire hydraulic system. There are two shift solenoids in the shift control module 1055 The valves 1016, 1022 and one R shift oil cylinder 1031' have a shift valve 1013 in the clutch control module 1054, and the R shift oil cylinder 1031' communicates with the shift valve 1013 through the R shift oil circuit 1041. Only the output oil passages 1017, 1023 in the gear shift solenoid valves 1016, 1022 are respectively connected in parallel t...

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Abstract

The invention relates to a hydraulic control system of a dual-clutch automatic transmission. The system comprises a clutch control module, a shift control module, a clutch cooling module, a shafting cooling module and a main pressure-regulating module, wherein two shift electromagnetic valves and an R-gear shift cylinder are arranged inside the shift control module; a shift valve is arranged in the clutch control module; the R-gear shift cylinder is communicated with the shift valve through an R-gear shift oil way; an R-gear empty oil way is respectively extracted in parallel from output oil ways of the two shift electromagnetic valves; the two R-gear empty oil ways are connected with two input ends of a shuttle valve respectively; and an output end of the shuttle valve is communicated with the spring chamber of the R-gear shift cylinder through an empty output oil way. The hydraulic control system effectively solves the technical problem of unreliable return of an R gear of the dual clutch, makes the return of the R gear of the dual clutch more reliable and improves the working reliability of the hydraulic control system of the dual-clutch automatic transmission.

Description

technical field [0001] The invention relates to a hydraulic control system of an automobile transmission, in particular to a hydraulic control system of an automobile dual-clutch automatic transmission. Background technique [0002] The dual-clutch automatic transmission has two clutches. It adopts the method of pre-engagement and dual-clutch power switching, which reduces the power interruption time of gear shifting and improves the dynamic performance of the system. At the same time, the dual-clutch automatic transmission system adopts the traditional fixed shaft The gear-synchronizer transmission structure has high transmission efficiency and good fuel economy. [0003] The electro-hydraulic control system is the most critical, complex and costly component in the dual-clutch automatic transmission. On the premise of ensuring the performance, proper simplification of the hydraulic system will help reduce the manufacturing cost and difficulty of the dual-clutch automatic tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/00F16H61/38F16H61/688
Inventor 周勇斯红路方晓华侯亚斌银联作
Owner CHONGQING TSINGSHAN IND
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