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Clutch neutral gear stopping device for automobile automatic transmission

A technology of automatic transmission and stop device, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., can solve problems such as energy waste, and achieve good fuel economy.

Active Publication Date: 2015-05-20
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the present invention can control the pressure of the torque converter clutch according to various judging conditions, it does not solve the problem of energy waste due to the slip film and engine load during continuous deceleration

Method used

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  • Clutch neutral gear stopping device for automobile automatic transmission
  • Clutch neutral gear stopping device for automobile automatic transmission

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Embodiment Construction

[0023] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0024] Such as figure 1 As shown, the automobile automatic transmission clutch neutral stop device is used in the dual-clutch transmission control system, and the device includes TCU 5, a collection part 1 connected to TCU 5 for detecting the position signal of the gear lever, a vehicle speed sensor 2, and an EMS 3 and the clutch pressure control module 4, the TCU includes a microcontroller 7, a sensor interface circuit 6, a solenoid valve drive circuit 8 and a memory 9, and its sensor interface circuit 6 has a switch interface circuit, an analog interface circuit and a frequency interface circuit. Three types, the switching signal is converted into a level compatible with the microcontroller 7 through the clamping diode a...

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Abstract

The invention provides a clutch neutral gear stopping device for an automobile automatic gearbox, belonging to the technical field of an automobile. The problem that the conventional automobile wastes energy due to a sliding mould and an engine load in a continuous speed reducing process can be solved. The clutch neutral gear stopping device comprises a TCU (Transmission Control Unit), a collecting piece for collecting position signals of a shift rod, a vehicle speed sensor, an EMS (Engine Management System) and a clutch pressure control module, wherein the collecting piece, the vehicle speed sensor, the EMS and the clutch pressure control module are respectively connected with the TCU. The TCU is used for receiving the position signals of the shift rod, which are collected by the collecting piece, and comparing vehicle speed signals collected by the vehicle speed sensor, accelerator opening signals transmitted by the EMS and brake pressure signals with a set value in the TCU when a shift is a travelling gear. If a vehicle speed is less than a vehicle speed set value, an accelerator opening degrees is less than an accelerate set value, and a brake pressure is more than a brake set value, the TCU sends a request signal of reducing a clutch pressure to control a clutch pressure control module to reduce the clutch pressure. According to the clutch neutral gear stopping device provided by the invention, the fuel economical efficiency of a dual-clutch transmission in the speed reducing process is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to an automobile automatic transmission clutch neutral stop device. Background technique [0002] The dual-clutch transmission adopts two clutches to be connected with the two input shafts of the transmission respectively, one clutch is connected with the odd-numbered gear input shaft of the transmission, and the other clutch is connected with the even-numbered gear input shaft. During the working process of dual clutch transmission, one odd gear and one even gear are allowed to be engaged. [0003] In the currently applied dual-clutch transmission, the clutch is an important shifting mechanism, which is controlled by an electro-hydraulic method to realize the function of torque transmission. [0004] Generally speaking, in a dual clutch automatic transmission, if the vehicle continues to decelerate, the clutch pressure will be reduced to the contact point, maintaining the basic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H63/46F16H63/42
Inventor 倪为陈勇罗大国刘文忠刘健赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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