A clutch booster pump

Abstract

The invention relates to a clutch booster pump which comprises a clutch booster sub pump and a connecting pump, wherein the clutch booster sub pump and the connecting pump are movably connected through a connecting pushing rod; the connecting pump comprises a cylinder, a choke plug, a piston, an oil inlet of the connecting pump, a compensation hole, an oil inlet, an oil outlet and a return spring; one end of the connecting pushing rod is connected with the piston; the choke plug is arranged on the connecting pushing rod in a sleeving mode, and is fixedly connected with the cylinder; one end of the oil inlet of the connecting pump is connected with the cylinder; the compensation hole and the oil inlet are communicated with an inner cavity of the cylinder; the oil outlet is formed in the cylinder; and the oil outlet is opposite to the piston. According to the clutch booster pump, the connecting pump is arranged between the clutch booster sub pump and a clutching sub pump, so that pedal force is reduced in case of not changing the structure of a gearbox.

Description

technical field [0001] The invention belongs to the technical field of clutches, in particular to a clutch booster pump. Background technique [0002] For non-automatic vehicles, the function of the clutch system is: the clutch master cylinder converts the mechanical energy of the clutch pedal into hydraulic energy, and then converts the hydraulic energy into mechanical energy through the clutch sub-cylinder or clutch booster sub-cylinder to push the clutch shift fork and release bearing , so as to realize the disengagement of the clutch. The separation of the clutch is realized by the driver stepping on the clutch, so the clutch pedal force is an important evaluation index of vehicle performance. [0003] like figure 1 Shown is the structural diagram of the current clutch booster cylinder, including oil inlet 4, relay valve 5, relay valve piston 6, air inlet 7, exhaust port 8, return spring 2 and push rod 1. After stepping on the clutch pedal, the hydraulic oil forms a c...

AI Technical Summary

Problems solved by technology

[0008] c. There are specific requirements for the gearbox. At the beginning of the design, the bracket mounting holes for fixing the clutch booster cylinder must be reserved on the gearbox, and the release fork is basically a rocker structure, but many times the car design is directly borrowed Existing mature gearboxes that meet the performance requirements, if the gearbox originally used a clutch slave cylinder, and there is no bracket mounting hole for the clutch booster cylinder to be installed on the gearbox, or the clutch separation fork structure and the clutch If the booster cylinder cannot be matched, the clutch booster cylinder cannot be used. If the gearbox is redeveloped, the cycle will be long and the cost will be very expensive

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