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Hydraulic control system of automatic dual-clutch transmission

A technology of hydraulic control system and automatic transmission, which is applied in transmission control, components with teeth, belts/chains/gears, etc. It can solve the problems of inability to ensure the reliable return of the 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: 2013-08-07
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 R gear spring to return 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

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Effect test

Embodiment approach 1

[0016] 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 clutch cooling module 1056 for hydraulic fluid, the shaft cooling module 1057 for controlling the shaft cooling fluid inside the transmission, and the main pressure regulating module 1058 for adjusting the pressure of the entire hydraulic system of the dual clutch automatic transmission. There are two components in the shift control module 1055 There are only shift solenoid valves 1016, 1022 and one R gear shift oil cylinder 1031'. There is a shift valve 1013 in the clutch control module 1054. The R gear shift oil cylinder 1031' is connected to the shift valve through the R gear shift oil circuit 1041. 1013 communicates, and the output oil circui...

Embodiment approach 2

[0018] Such as 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 clutch cooling module 1056 for hydraulic fluid, the shaft cooling module 1057 for controlling the shaft cooling fluid inside the transmission, and the main pressure regulating module 1058 for adjusting the pressure of the entire hydraulic system of the dual clutch automatic transmission. There are two components in the shift control module 1055 There are only shift solenoid valves 1016, 1022 and one R gear shift oil cylinder 1031'. There is a shift valve 1013 in the clutch control module 1054. The R gear shift oil cylinder 1031' is connected to the shift valve through the R gear shift oil circuit 1041. 1013 is connected, and the output oil circu...

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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 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 transmi...

Claims

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Application Information

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Patent Type & Authority Patents(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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