Intermediate shaft brake of proportional valve control pump type automatic speed changer

A technology for automatic transmissions and intermediate shafts, applied in the direction of brake actuators, etc., can solve the problems of high manufacturing and installation costs, unfavorable programmed control of intermediate shaft brakes, 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] The purpose of the present invention is to solve the problem that the existing automatic transmission intermediate shaft brake is not conducive to programmed control, maintenance, and high manufacturing and installation costs. The present invention provides a proportional valve-controlled pump type automatic transmission intermediate shaft brake. The brake not only Can provide the required braking torque stably and accurately, and can be maintenance-free and reduce maintenance costs

Method used

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  • Intermediate shaft brake of proportional valve control pump type automatic speed changer
  • Intermediate shaft brake of proportional valve control pump type automatic speed changer

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Embodiment Construction

[0012] Such as figure 1 As shown, a proportional valve-controlled pump type automatic transmission intermediate shaft brake includes a hydraulic pump 14, the inlet of which is connected to the oil tank 15; a proportional overflow valve 16, which is connected to the TCU electric motor of the automatic transmission connected, and connected with the outlet of hydraulic pump 14 and oil tank 15 through hydraulic pipelines; hydraulic pump 14 has a displacement of 10-15ml / r; The flow valves 16 are arranged in series, and there is a hydraulic oil passage in between.

[0013] Such as figure 2 As shown, the 4-speed automatic transmission includes transmission input shaft 1, input shaft gear 2, first gear 3, first and second gear sleeve 4, second gear 5, third gear 6, third and fourth gear sleeve 7, four Gear gear 8, reverse gear gear 9, reverse gear coupling sleeve 10, transmission output shaft 11, reverse gear idler gear 12, transmission intermediate shaft 13 The second gear is an ...

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PUM

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Abstract

The invention discloses an intermediate shaft brake of a proportional valve control pump type automatic speed changer, comprising a hydraulic pump and a proportional overflow valve; wherein an inlet of the hydraulic pump is connected with an oil tank; and the proportional overflow valve is electrically connected with a TCU of the automatic speed changer and connected with an outlet of the hydraulic pump and the oil tank by a hydraulic pipeline. The intermediate shaft brake has the beneficial effects that 1. the heat generated by energy loss can be taken away by the hydraulic oil while the intermediate shaft of the automatic speed changer brakes so as to provide a stable and accurate braking torque; 2. wear is basically not generated, the service life is long and the maintenance cost is effectively reduced; and 3. power source is not needed and the structure is simple.

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 杨世平谭援强张高峰刘金刚
Owner XIANGTAN UNIV
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