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Intermediate shaft brake of reversing valve pump control type automatic transmission

A technology of automatic transmission and reversing valve, applied in the direction of brake actuator, etc., can solve the problems of high manufacturing and installation cost, unfavorable program control of intermediate shaft brake, etc.

Inactive Publication Date: 2009-10-28
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing intermediate shaft brake is not conducive to program control, maintenance, and high manufacturing and installation costs, the present invention provides a reversing valve-controlled pump type automatic transmission intermediate shaft brake

Method used

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  • Intermediate shaft brake of reversing valve pump control type automatic transmission
  • Intermediate shaft brake of reversing valve pump control type automatic transmission

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Embodiment Construction

[0013] Such as figure 1 As shown, a countershaft brake of a reversing valve-controlled pump type automatic transmission includes a hydraulic pump 14; a two-position three-way electromagnetic reversing valve 16, and the two-position three-way electromagnetic reversing valve 16 is electrically connected to the TCU of the automatic transmission , the oil inlet is connected with the hydraulic pump 14, the oil outlet is directly connected with the fuel tank, the other oil outlet is connected with the oil inlet of the constant pressure relief valve 17, the oil return port of the constant pressure relief valve [17] is connected with the fuel tank, and the oil inlet The port is connected to an oil outlet of the two-position three-way electromagnetic reversing valve 16; the displacement of the hydraulic pump 14 is 10-15ml / r; the diameter of the two-position three-way electromagnetic reversing valve 16 is 6-12mm; The pressure value of the flow valve 17 is 1.5-2Mpa; the hydraulic pump 14...

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Abstract

The invention discloses an intermediate shaft brake of a reversing valve pump control type automatic transmission, comprising a hydraulic pump, a two-position three-way electromagnetic reversing valve electrically connected with an automatic transmission TCU, an oil inlet connected with the hydraulic pump, an oil outlet connected with an oil tank directly, and another oil outlet connected with an oil inlet of a constant pressure overflow valve; an oil return opening of the constant pressure overflow valve is connected with the oil tank and an oil inlet thereof is connected with an oil outlet of the two-position three-way electromagnetic reversing valve. The invention has the beneficial effects as follows: 1. during the brake of the intermediate shaft of the automatic transmission, the heat generated by energy loss is taken away by the hydraulic oil so as to provide a stable and accurate braking torque; 2. abrasion is basically not generated, the service life is long and the maintenance cost is effectively decreased; and 3. no power source is needed and simple structure is provided.

Description

technical field [0001] The invention relates to a countershaft braking device of an automatic transmission, in particular to a countershaft brake of a countershaft type electromechanical automatic transmission (AMT). Background technique [0002] The electromechanical automatic transmission (AMT) is based on the traditional manual transmission, and its shift actuator is changed from the traditional manual control method to the electronic control method. Most of the mature manual transmissions adopt intermediate shaft-type stepped gear transmission. By changing the meshing state of the gear set and changing the transmission ratio, the purpose of speed change is achieved. When the car is promoted from low gear to high gear, the clutch is disengaged and the gear set is in neutral. At this time, the intermediate shaft is still in a state of high-speed rotation due to inertia, and its speed is higher than that of the high gear that will be meshed. cause teething. In order to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/14
Inventor 谭援强刘金刚张高峰杨世平
Owner XIANGTAN UNIV
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