Intermediate shaft brake of hydraulic retarding type automatic speed changer
An automatic transmission and hydraulic retarding technology, 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: 2011-02-02
XIANGTAN UNIV
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Problems solved by technology
[0003] In order to solve the problem that the existing intermediate shaft brake is not conducive to programmed control, maintenance, and high manufacturing and installation costs, the purpose of the present invention is to provide a hydraulic retarder type automatic transmission intermediate shaft brake
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[0012] Such as figure 1 As shown, a hydraulic slow-speed automatic transmission intermediate shaft brake includes a hydraulic coupling 18, the hydraulic coupling turbine 12 is fixed on the hydraulic coupling housing 10; a two-position two-way electromagnetic reversing valve 9. The electromagnetic reversing valve 9 is electrically connected to the transmission control unit (TCU) of the automatic transmission. The oil inlet of the two-position two-way electromagnetic reversing valve 9 is connected to the outlet of the lubricating hydraulic oil pump 17. 9 The oil outlet is connected to the inlet of the working chamber of the hydraulic coupler, and the oil outlet of the hydraulic coupler 18 is connected to the oil tank 8; the diameter of the pump wheel 11 of the hydraulic coupler and the turbine 12 of the hydraulic coupler are 10-15mm; The diameter of the electromagnetic reversing valve 9 is 6-12 mm; there is a working chamber between the pump wheel 11 of the hydraulic coupler and...
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The invention discloses an intermediate shaft brake of a hydraulic retarding type automatic speed changer, comprising a hydraulic coupler and a two-position two-way electromagnetic directional valve. The hydraulic coupler is fixed on a shell of the hydraulic coupler by a turbine; the electromagnetic directional valve is electrically connected with a TCU of the automatic speed changer; an oil inletof the two-position two-way electromagnetic directional valve is connected with an outlet of a lubricating hydraulic pump; an oil outlet of the two-position two-way electromagnetic directional valveis connected with an inlet of a working cavity of the hydraulic coupler; and an oil outlet of the hydraulic coupler is connected with an oil tank. 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...
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IPC IPC(8): F16D65/14
Inventor 刘金刚谭援强张高峰杨世平
Owner XIANGTAN UNIV