Hybrid dynamic system with combined cycle of internal combustion engine-stirling engine

Abstract

The invention discloses a hybrid dynamic system with combined cycle of internal combustion engine-stirling engine, belonging to the fields like energy source and power, wherein the system comprises a stirling auxiliary power subsystem; the subsystem comprises a heat exchanger, a stirling engine, a generator connected with the stirling engine and a controller connected with the generator. One end of the controller is connected with a rechargeable battery and other end thereof is connected with an electric motor. The heat exchanger is configured in a smoke silencer of the internal combustion engine heat-power transferring subsystem, or placed before a smoke catalyst purifying device. The internal combustion engine heat-power transferring subsystem and the stirling auxiliary power subsystem share one coolant heat radiator. The hybrid dynamic system has characteristics of a simple and contract structure, a high fuel use ratio and so on. The hybrid dynamic system can also enhance the output power of the internal combustion engine and improve the energy saving and emission reduction performances for vehicles.

Description

technical field [0001] The invention relates to a hybrid power system of an internal combustion engine-Stirling engine combined cycle, which belongs to the field of energy and power. Background technique [0002] At present, the thermal efficiency of the internal combustion engine is generally 33%, the waste heat of the exhaust gas accounts for about 33% of the calorific value of the input fuel, and the exhaust gas temperature is between 600K and 1000K. Directly evacuating the flue gas from the internal combustion engine whose temperature is much higher than the ambient temperature not only leads to local thermal pollution, but also is a waste. Recovering the useful energy in the flue gas of internal combustion engine has important social and economic benefits. Although the exhaust gas of the internal combustion engine has a certain temperature, the pressure is relatively low. Recovering the waste heat of the flue gas can neither affect the performance of the internal comb...

AI Technical Summary

Problems solved by technology

The waste heat recovery system involved in this patent is independent of the internal combustion engine, and only considers the waste heat recovery under full load conditions, and does not consider the operation of the waste heat recovery system under the start-stop and part-load conditions of the internal combustion engine

Moreover, the system is complex in composition, difficult to realize the layout structure, and lacks operational reliability.

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