Hydraulic control type device capable of eliminating pumping loss and improving low-speed performance of hydraulic retarder

Abstract

The invention discloses a hydraulic control type device capable of eliminating pumping loss and improving the low-speed performance of a hydraulic retarder. The hydraulic control type device comprises a planetary gear train, a multi-piece brake, a multi-piece clutch, a case and a hydraulic control system which is used for controlling the multi-piece brake and the multi-piece clutch to be connected or separated. The planetary gear train comprises a planet carrier, a sun wheel, a gear ring and a plurality of planet gears, wherein the plurality of planet gears are evenly distributed between the sun wheel and the gear ring, meshed with the sun wheel and the gear ring respectively and installed on the planet carrier, the planet carrier is fixedly connected to an output shaft of a driven gear of a transmission, the sun wheel is fixedly connected to an input shaft of the hydraulic retarder, the multi-piece brake is disposed between the gear ring and the case, and the multi-piece clutch is arranged between the gear ring and the input shaft of the hydraulic retarder. The hydraulic control type device is capable of eliminating the pumping loss of the hydraulic retarder and improving the low-speed performance of the hydraulic retarder, has a little modification on existing hydraulic retarders and is simple in structure, convenient to use and reliable in work.

Description

technical field [0001] The invention relates to a hydraulically controlled device for eliminating air loss energy consumption of a hydraulic retarder and improving low-speed performance, belonging to the technical field of vehicle auxiliary braking. Background technique [0002] When the vehicle is under continuous braking for a long time, high-intensity braking or frequent braking, the temperature of the brake disc will increase significantly, resulting in a decrease in the friction coefficient, aggravated wear, and a dangerous thermal recession phenomenon of partial or even complete loss of braking efficiency. . Although the application of anti-lock brake system (ABS) and electronic brake force distribution system (EBD) has improved the stability and reliability of vehicle braking, they have little effect on the thermal fading phenomenon of brakes. At present, many countries including my country have clearly stipulated that passenger cars and trucks above a certain specif...

AI Technical Summary

Problems solved by technology

The former installs a clutch in front of the driving wheel shaft to achieve the purpose of eliminating the air loss energy consumption of the hydraulic retarder, but it does not have the effect of improving low-speed performance; the latter controls the gear meshing of the mechanical synchronizer to adjust the speed of the driving wheel, which can improve The low-speed performance of the hydraulic retarder, but it does not have the effect of eliminating air loss energy consumption, and the structure is complex and inconvenient to operate

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