System for recycling waste heat energy of exhaust gas of internal combustion engine by using air circulation

Abstract

The invention discloses a system for recycling waste heat energy of exhaust gas of an internal combustion engine by using air circulation. One set of air circulation (Brayton Air Cycle) system is additionally arranged on an internal combustion engine exhaust pipe to recycle the waste heat energy of the exhaust gas and convert the waste heat energy into effective work. A technical scheme is as follows: after being pressurized to a certain pressure by a compressor, the air is heated in a heat exchanger to form a high temperature and high pressure gas, and then the high temperature and high pressure gas is expanded in a turbine to do work. Turbine output work is used for driving an air compressor of an internal combustion engine air intake system to supercharge inlet air and can be also used for driving a high speed motor to generate power. In addition, the system disclosed by the invention can be also designed in a heat return circulation mode, so that energy recycling efficiency is further increased through two-stage heating. An internal combustion engine electronic control system is used for adjusting working pressure and flow of air circulation in real time according to an exhaust state, so as to optimize circulating efficiency. The system for recycling the waste heat energy of the exhaust gas of the internal combustion engine by using the air circulation, disclosed by the invention, can obtain an energy saving and environment friendly effect by using air as a working medium and has the advantages of comparatively simple structure and better application value.

Description

technical field [0001] The patent of the present invention is a system that uses a heat transfer method to drive an aerodynamic cycle to recover the exhaust waste heat energy of an internal combustion engine. By coupling a set of aerodynamic circulation device to the exhaust system of the internal combustion engine, the waste heat energy of the high temperature exhaust of the internal combustion engine is converted into effective work output. The effective work output by the system can be used to drive the compressor of the intake system to realize the intake boost of the internal combustion engine, and can also be used to drive a high-speed micro-motor to generate electricity to improve the energy utilization efficiency of the internal combustion engine. Background technique [0002] The most severe challenge facing the world today is energy and environmental issues, and energy conservation and emission reduction has become an important development strategy for various coun...

AI Technical Summary

Problems solved by technology

Adopting the present invention can overcome the disadvantages of excessive exhaust back pressure and low efficiency in existing internal-combustion engine exhaust gas turbocharging...

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