Automotive energy-saving emission-reducing hydraulic retarder

Abstract

The invention relates to an automotive energy-saving emission-reducing hydraulic retarder comprising an oil pump and a hydraulic system which are mounted on an output shaft of a large or intermediate automotive transmission and connected therewith in parallel, and the automotive energy-saving emission-reducing hydraulic retarder not only has the function of the automotive hydraulic retarder, but also has the capability of recovering kinetic energy when braking an automobile and re-utilizing the kinetic energy during startup (or force application), and can further reduce the exhaust emission during the startup and realize the energy conservation and the emission reduction. The automotive energy-saving emission-reducing hydraulic retarder is characterized by being connected with the output shaft of the automotive transmission in parallel, so that the combination or the disengagement is convenient, a system can be disengaged when a fault exists, and a vehicle can still travel normally; the energy transfer during energy storage and energy release does not pass through a mechanical system of the original transmission, and the output shaft of the transmission is directly connected with a rear axle of the automobile with the help of a clutch, thereby reducing the load of the transmission; furthermore, the automotive energy-saving emission-reducing hydraulic retarder has obvious energy-saving effect, and can release the energy and apply the force during the startup of the vehicle, improve the working condition of an engine, reduce the emission of harmful gases; accelerate the starting velocity, improve the operation efficiency, change the mechanical rigid brake to the flexible hydraulic retardance, improve the riding comfort and simultaneously prolong the service life of a vehicle transmission and brake system.

Description

Technical field: [0001] The automobile energy-saving and emission-reducing hydraulic retarder of the present invention is an oil pump and a hydraulic system installed in parallel with the output shafts of large and medium-sized automobile gearboxes. It not only has the function of an automobile hydraulic retarder, but also can recycle automobiles. The kinetic energy during braking is reused during starting (or boosting), which also reduces exhaust gas emissions during starting, thereby achieving the purpose of energy saving and emission reduction. It belongs to the field of mechanical technology. Background technique: [0002] Automobile braking system is one of the most important systems in the safe driving of automobiles. With the development of engine technology and the improvement of road conditions, the driving speed of automobiles (that is, driving kinetic energy) has been greatly improved, and the traditional friction brake device is increasingly unable to meet the r...

AI Technical Summary

Problems solved by technology

[0003] At present, all kinds of retarders (eddy current, hydraulic, etc.) actually used at home and abroad convert the kinetic energy (or potential energy) of the car into heat energy and emit it into the air in different ways. The kinetic energy of the car depends on consuming various precious energy sources. It is a pity to lose this energy in vain.

[0004] It should be pointed out that hydraulic hybrid electric vehicles that can recover and reuse the kinetic energy of automobile braking have been initially applied in various types of urban buses, garbage trucks and express vehicles that require frequent braking and starting, and have achieved remarkable results. Energy saving and emission reduction effects, and many technical solutions, such as patent No. 87100344, ZL88214287.9, ZL200420059673.6, ZL200620040083.8, ZL200620044935.0, ZL200620044934.6, ZL200720573344.0, etc. To a certain extent, they show the role of hydraulic retarders with energy-saving and emission-reducing functions, but they cannot perfectly replace the relatively advanced hydraulic retarders currently available for more applications.

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