Emergency gear control device for automatic gearbox

A technology of control device and neutral gear, applied in the direction of transmission device control, elements with teeth, belts/chains/gears, etc., can solve the problems of lack of emergency gears, etc., and achieve the effect of simple structure, low cost and easy-to-obtain structure.

Inactive Publication Date: 2015-11-25
内蒙古第一机械集团股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of lack of emergency gears in current mainstream automatic transmissions by providing an emergency gear control device for automatic transmissions, so that the transmission can still be shifted into 1st gear, reverse gear or neutral gear after the TCU is powered off , to meet the use requirements

Method used

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  • Emergency gear control device for automatic gearbox

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Embodiment Construction

[0012] Such as figure 1 As shown, the present invention is an emergency gear control device for an automatic transmission, which has three working modes: neutral gear, first gear, and reverse gear. The three working modes are respectively controlled by three linkage switches. The emergency gear control device Each time there is one and only one working mode in running state;

[0013] The neutral working mode includes a linkage switch, a relay 1K and three normally open contacts 1K 1 , 1K 2 , 1K 3 , the three normally open contacts are respectively connected to solenoid valves B, C, and A;

[0014] 1 working mode includes a linkage switch, a relay 2K and two normally open contacts 2K 1 , 2K 2 , the two normally open contacts are respectively connected to the solenoid valves B and C, and also includes a delay relay 4K and a normally open contact 4K1, the normally open contact 4K1 is connected to the solenoid valve D;

[0015] The reverse gear working mode includes a linkag...

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Abstract

The invention relates to an emergency gear control device for an automatic gearbox. The problem that an existing mainstream automatic gearbox is short of emergency gears is solved. Three work modes of a neutral position, a gear 1 and a reverse gear are achieved, and only one work mode of the emergency gear control device is in an operating state every time. The neutral position work mode comprises a linkage switch, a relay 1K and three normally-open contacts, and the three normally-open contacts are connected with a solenoid valve A, a solenoid valve B and a solenoid valve C respectively. The gear 1 work mode comprises a linkage switch, a relay 2K and two normally-open contacts, and the two normally-open contacts are connected with the solenoid valve B and the solenoid valve C respectively. In addition, a time-delay relay 4K and a normally-open contact are further included, and the normally-open contact is connected with a solenoid valve D. The reverse gear work mode comprises a linkage switch, a relay 3K and two normally-open contacts, and the two normally-open contacts are connected with the solenoid valve A and the solenoid valve C respectively. The emergency gear control device is simple in structure and high in reliability. The emergency gear control device has a more obvious function when applied to the high-power AT gearbox.

Description

Technical field: [0001] The invention relates to a gear shift control device for an automatic transmission, in particular to an emergency gear control device for an automatic transmission. Background technique: [0002] At present, the world's advanced automatic transmission shifting systems all adopt the electro-hydraulic control mode, and the shifting process is completely completed by the TCU (transmission electronic control unit) by controlling the shift solenoid valve of the hydraulic control module inside the gearbox. When the TCU is powered off due to a fault or accident, in order to prevent the gearbox from being out of gear and the vehicle from breaking down, the shift system has a "power-off protection" system, that is, when the TCU suddenly loses power, the The current driving gear is automatically switched to the default gear to continue driving. This means that the driver cannot stop for emergency repairs during a sudden power failure. Once the vehicle is stopp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02
CPCF16H61/0204
Inventor 冯益柏王广华张美荣张蕊尹长杰杨玉文刘永河潘承达赵雷明郭德胜付晓霞何冬黎孙福成李俊智高玉英李燕
Owner 内蒙古第一机械集团股份有限公司
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