Aqueous medium retarder assembly with integrated planetary row and vehicle containing same

Abstract

The invention provides an aqueous medium retarder assembly integrating a planetary gear set. The aqueous medium retarder assembly comprises a retarder, a planetary gear set, and a transmission shaft. The retarder comprises a shell, a stator and a rotor; the planetary gear set comprises a gear ring, a planetary carrier and a sun wheel; the transmission shaft comprises a power input end and a power output end. The rotor is connected with the planetary carrier; the power input end of the transmission shaft is connected with the sun wheel; the power output end of the transmission shaft is connected with the planetary carrier; the gear ring is fixed to the shell of the retarder. According to the invention, the rotating speed of the rotor can be reduced, the shaft seal degree is reduced, the water pumping capability is reduced while it is guaranteed that the temperature rise of working fluid does not exceed an upper limit and the output power does not change, the impact of the retarder to an original engine cooling water pump is reduced, the control pressure of an outlet flow valve further is reduced and the service life of the retarder is prolonged.

Description

technical field [0001] The invention relates to the technical field of automobile construction, and relates to an aqueous medium retarder assembly with an integrated planetary row device and a vehicle equipped with the retarder assembly. Background technique [0002] When the vehicle installed with the water medium retarder is braked, the retarder is in the open state, and the working fluid such as ethylene glycol aqueous solution or oil does not enter the working chamber. At this time, the rotor rotates with the transmission shaft, and the stator is fixed. There is a large pressure difference between the liquid inlet and outlet of the retarder and the working chamber, and the pressure difference drives the flow of the working fluid. The flow of the working fluid increases with the increase of the speed, which exceeds the pumping capacity of the original engine water pump. That is, when the water medium retarder is working, the pumping capacity of the retarder will be great...

AI Technical Summary

Problems solved by technology

The existing structure is to make the water pump stop working when the retarder is working to reduce energy loss, but this control strategy has strict requirements on the layout of the whole vehicle. Due to the limited space near the engine, both the retarder and the water pump need a drive shaft The driving force comes from the crankshaft of the engine, so the water pump and the retarder need to be integrated to reduce the space required by the retarder and the water pump, so the practicability is poor, and the original engine system needs to be very large Modification, that is, the position of the fan and the water pump needs to be changed, the cost is very high and the practicability is low

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