Automobile engine exhaust system

Abstract

The invention discloses an automobile engine exhaust system, which comprises an exhaust pipe and a thermoelectric power generation device arranged on the exhaust pipe, wherein the thermoelectric power generation device comprises a thermoelectric power generation heat collection module and a thermoelectric power generation module connected with one end of the thermoelectric power generation heat collection module; the thermoelectric heat collection module comprises a heat collection piece arranged inside the exhaust pipe for being contacted with exhaust gas for absorbing the heat; and the thermoelectric power generation module comprises a thermoelectric element for using the temperature difference for power generation. According to the automobile engine exhaust system, through additionally arranging the thermoelectric power generation device, heat of the exhaust gas exhausted in the exhaust pipe is reused for power generation, the power supply time for a battery, a lighting and signal system, an instrument and a display system by the engine can be reduced, and the fuel consumption of the overall automobile can be reduced.

Description

technical field [0001] The invention relates to an automobile engine system, in particular to an automobile engine exhaust system. Background technique [0002] At present, about two-thirds of the energy in automobile fuel is not fully and effectively utilized, but is wasted through exhaust waste heat and other forms. If these wasted heat energy can be utilized, on the one hand, the utilization rate of energy can be improved, and on the other hand, the fuel consumption of the car can be effectively reduced. [0003] A thermoelectric material is a semiconductor material that uses the movement of carriers inside a solid to achieve direct mutual conversion of thermal energy and electrical energy. The material can use temperature difference to generate electricity, and has a good match with exhaust waste heat power generation. [0004] Chinese Patent Application Publication No. CN102102596A discloses a technical solution for power generation by exhaust waste heat from automobi...

AI Technical Summary

Problems solved by technology

[0005] However, there are still deficiencies in this technical solution. First, it does not take into account the heat collection method of the heat collection module, and most of the heat energy is discharged from the exhaust system along with the exhaust gas; second, the technical solution uses a cooling circuit integrated with the cooling system of the internal combustion engine , which requires modification of the original internal combustion engine cooling system, which makes it more complicated to implement this solution on existing models

Finally, this technical solution does not take into account the utilization method and power supply strategy of the generated electric energy

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