Hydraulic control system of automatic dual-clutch transmission

A technology of hydraulic control system and automatic transmission, applied in transmission control, components with teeth, belts/chains/gears, etc., which can solve the problems of inability to ensure reliable return of R gear, poor system reliability, and reduced system efficiency, etc. problem, achieve the effect of reliable return, solve reliable return, and improve the quality of empty return

Active Publication Date: 2011-01-05
HEFEI CHANGAN AUTOMOBILE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
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Effect test

Embodiment approach 1

[0016] like 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. The output oil circuit 1017 of the gear electromagnetic valve 1016 is connected in parallel with an R gear return empty oil circ...

Embodiment approach 2

[0018] like figure 2 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. The output oil circuit 1023 of the gear solenoid valve 1022 is connected in parallel with an R gear return empty oil circuit 10...

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Abstract

The invention relates to a hydraulic control system of an automatic dual-clutch transmission, comprising a clutch control module, a gear shift control module, a clutch cooling module, a shaft line cooling module and a main pressure regulating module, wherein the gear shift control module comprises two gear shift electromagnetic valves and a gear R shift oil cylinder; the clutch control module comprises a gear shift valve; the gear R shift oil cylinder is communicated with the gear shift valve through a gear R shift oil circuit; a gear R empty return oil circuit is led out and connected in parallel in an output oil circuit of one of the two gear shift electromagnetic valves; and the gear R empty return oil circuit is communicated with a spring cavity of the gear R shift oil cylinder. The hydraulic control system effectively solves the technical problem on reliable return of the dual-clutch gear R, ensures that the return of the dual-clutch gear R is more reliable and improves the working reliability of the hydraulic control system of the automatic dual-clutch 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): F16H61/00F16H61/04
Inventor 周勇刘国京秦凌蔡之骏莫凡
Owner HEFEI CHANGAN AUTOMOBILE
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