Hydraulic control system for gear shifting of manual gearbox

Abstract

The invention discloses a hydraulic control system for gear shifting of a manual gearbox and relates to the field of automobile accessories. The hydraulic control system consists of a gear-shifting oil cylinder and a control valve set; a position sensor of the gear-shifting oil cylinder is arranged on one side of a main cylinder of the gear-shifting oil cylinder and is driven to move by a piston in the main cylinder; a gear-shifting rod is arranged at the piston position in the main cylinder; the control valve set consists of a main cylinder valve block and an auxiliary cylinder valve block which are arranged on the main cylinder and an auxiliary cylinder respectively and integrated into a whole; a pressurized oil supplying port P of a hydraulic oil pump PUM is connected with a pressure relay KP1, a relief valve RV1 and a check valve CV1; the outlet of the check valve CV1 is connected with an accumulator ACC1; and the control valve set 1 can be connected with the accumulator ACC1. A proportional pressure reducing valve is controlled by an electrical control unit and under the action of the electrical control unit, three accurate stroke positions of the gear-shifting oil cylinder are precisely controlled and the hydraulic automatic control over the gear shifting is realized, so the requirements of the gear shifting process of the gearbox are met.

Description

technical field [0001] The invention belongs to the scope of vehicle components, in particular to a hydraulic control system for shifting gears of a manual gearbox. Background technique [0002] The shifting of traditional manual transmissions is done manually, and the gear lever must be moved by hand to change the meshing position of the transmission gears, thereby changing the transmission ratio and achieving the purpose of shifting gears. However, the traditional manual transmission, when driving in bad traffic conditions, requires frequent manual shifting of the vehicle, which is likely to cause driver fatigue, and requires the driver to grasp the timing of shifting skillfully and correctly to ensure the dynamic performance of the vehicle. Economy and shifting smoothness increase the degree of operation complexity. [0003] In addition, when the installation position of the gearbox is far away from the driver's operating position, it is difficult to realize remote manua...

AI Technical Summary

Problems solved by technology

However, the traditional manual transmission, when driving in bad traffic conditions, requires frequent manual shifting of the vehicle, which is likely to cause driver fatigue, and requires the driver to grasp the timing of shifting skillfully to ensure the dynamic performance of the vehicle. Economy and smooth shifting, increasing the degree of operational complexity

[0003] In addition, when the installation position of the gearbox is far away from the driver's operating position, it is difficult to realize remote manual operation, and it also increases the complexity of manipulating the transmission mechanism

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