A test device for an annular hydraulic cylinder of a clutch

Abstract

The invention provides a testing device for a circular hydraulic cylinder of a clutch. The testing device comprises a base, a support pillar, the circular hydraulic cylinder, a movable pressing plate, a displacement sensor, a spring pressing plate, a return spring, a movable piece, a spacing piece and a pulling force sensor, wherein the base is provided with an oil inlet channel; the support pillar is fixedly connected with the base; the circular hydraulic cylinder is connected with the support pillar in a sleeving manner; a circular hydraulic cavity communicated with the oil inlet channel is formed between the cylinder body of the circular hydraulic cylinder and a piston; the movable pressing plate can move with the piston; the displacement sensor is arranged on the movable pressing plate; the spring pressing plate is arranged at the top of the movable pressing plate and is fixedly connected with the support pillar axially; the return spring is in contact with the spring pressing plate and the movable pressing plate respectively; the movable piece is arranged at the top of the spring pressing plate and can move with the movable pressing plate; the spacing piece penetrates the movable piece horizontally and drives the movable piece to move with a pre-arranged distance; and the pulling force sensor is fixedly connected with the spacing piece and the support pillar respectively. According to the testing device, the related performances of the circular hydraulic cylinder are tested more accurately; the impact of the circular hydraulic cylinder on the engaging and the disengaging of the clutch is reduced; and the driving smoothness of a vehicle is improved.

Description

technical field [0001] The present invention relates to the technical field of the ring hydraulic cylinder experiment of the clutch of the hybrid electric vehicle, and more specifically, relates to a test device of the ring hydraulic cylinder of the clutch. Background technique [0002] In the transmission system of a hybrid electric vehicle, a clutch is arranged between the engine and the motor. When the vehicle is converted from pure electric drive to engine drive or hybrid drive, the motor needs to engage the clutch to start the engine. [0003] In order to avoid excessive impact on the normal driving of the vehicle when the motor starts the engine, and to ensure the smooth running of the vehicle, it is necessary to strictly control the torque transmitted by the clutch, the response time of the clutch and the separation of the friction plates of the clutch, etc., and the torque transmitted by the clutch Affected by the pressing force between the friction plates, the pres...

AI Technical Summary

Problems solved by technology

Since the annular hydraulic cylinder is assembled on the transmission or hybrid powertrain during the test, the relevant performance of the annular hydraulic cylinder is affected by the entire system, that is, the reducer and powertrain have a certain impact on the test of the relevant performance of the annular hydraulic cylinder , resulting in a large deviation between the performance of the tested annular hydraulic cylinder and the actual performance, which affects the separation and engagement of the clutch, making the ride comfort of the vehicle poor

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