Enhanced hydraulic retarder for commercial vehicle

Abstract

The invention relates to an enhanced hydraulic retarder for a commercial vehicle, and belongs to the technical field of vehicle accessories. The hydraulic retarder comprises a machine shell, a power transmission mechanism, a counter braking force generation mechanism, an oil supply mechanism and a heat exchange mechanism, wherein the power transmission mechanism comprises a gear spline main shaft, a middle turbine, a main bearing and an auxiliary bearing, the middle turbine is connected to the middle of the gear spline main shaft in a matched mode through a spline, the middle turbine is a double-face turbine; the counter braking force generating mechanism comprises a front fixed turbine, a rear fixed turbine and a rear fixed turbine fixing seat, a turbine cavity is formed between the rear fixed turbine fixing seat and the front side face of the machine shell, the gear spline main shaft transversely penetrates into the machine shell from the center of the front side face of the machine shell, and the middle turbine is located between the front fixed turbine and the rear fixed turbine. Counter braking force of the hydraulic retarder is generated by the middle turbine, the front fixed turbine and the rear fixed turbine together, so that the retarding effect is better, and control is more accurate.

Description

technical field [0001] The invention relates to the technical field of vehicle accessories, in particular to an enhanced hydraulic retarder for commercial vehicles. Background technique [0002] In the use of hydraulic retarder, the automobile retarder reduces the speed of the vehicle downhill through the hydraulic device. Large commercial trucks use the exhaust brake for a long time when going down the long slope, which makes the truck hub heat up and the truck braking effect becomes poor. In severe cases, the braking force will be lost, which will affect driving safety. The hydraulic retarder can play a very good auxiliary role in the long-distance braking of commercial trucks. Existing hydraulic retarders currently on the market generally consist of a stator, a rotor, an oil pump, an oil storage tank and a heat exchanger. The stator is also the housing of the retarder, which is connected to the rear end of the transmission or the vehicle frame. The rotor is connected to...

AI Technical Summary

Problems solved by technology

[0003] At present, the hydraulic retarders that have been listed and publicly reported in China have the following common shortcomings: 1. They cannot fully meet the normal use of commercial vehicles with a load of more than 50 tons.

2. It cannot meet the normal driving requirements of freight commercial vehicles on slopes with a speed exceeding 80Km / H and a downhill steepness exceeding 6%.

3. The fuel consumption of a commercial vehicle equipped with a hydraulic retarder increases by nearly 2% to 5%.

4. The heat exchange is slow. When the temperature is too high, the high temperature protection exit time is too long, which affects the downhill slowing speed

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