Internal combustion engine vapor supercharging waste heat recovery system

A technology of waste heat recovery system and internal combustion engine, applied in the direction of internal combustion piston engine, steam engine device, combustion engine, etc., can solve the problems of decrease in output power of internal combustion engine, increase in exhaust loss, increase in exhaust back pressure of internal combustion engine, etc. The effect of increasing the range of effective work

Active Publication Date: 2014-04-23
TIANJIN UNIV
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Problems solved by technology

However, the problem is that the installation of the turbine will increase the exhaust back pressure of the internal co

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  • Internal combustion engine vapor supercharging waste heat recovery system

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Embodiment Construction

[0010] The principle and system of the present invention will be further described below in conjunction with the accompanying drawings and examples. It should be noted that this embodiment is illustrative rather than restrictive, and does not limit the protection scope of the present invention.

[0011] The internal combustion engine steam pressurized waste heat recovery system, its system composition and component connection structure are: internal combustion engine 1 cylinder liner cooling water passes through the pipeline and the cold end of the thermoelectric generator 2, the expander 3, the high temperature water side of the preheater 5, and the circulation The water pumps 6 are sequentially connected in series to form a cooling water heat utilization circulation system (solid line in the figure). The compressor 11 in the turbocharger compresses the intake air and sends it to the intake end of the internal combustion engine. The exhaust end of the internal combustion engi...

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Abstract

The invention discloses an internal combustion engine vapor supercharging waste heat recovery system. According to the technical scheme, internal combustion engine cylinder sleeve cooling water is in tandem connection with the cold end of a thermoelectric generator, an expansion machine, a preheater and a circulating water pump sequentially through pipelines to form into a cooling water heat utilization circulating system; air performed air suction compression through a compressor is sent to an internal combustion engine; an exhaust pipe of the internal combustion engine is in tandem connection with the thermal end of the thermoelectric generator, the gas side of an evaporator sequentially to form into an exhaust thermal utilization system; a preheater is in tandem connection with the working medium side of the evaporator, a turbine expansion machine, the working medium side of the condenser and a working medium pump sequentially to form into an organic rankine cycle system; the compressor is in shaft connection with a turbo machine to form into a turbosupercharger. The internal combustion engine vapor supercharging waste heat recovery system has the advantages of breaking the temperature limit of the recycle source of the organic rankine cycle, recycling the waste heat energy of the exhaust and the cooling water, achieving efficient utilization of the waste heat, avoiding the condition that the exhaust energy is not enough to drive a supercharging system when the load is low, increasing the effective working range of the supercharging system and achieving the purpose of efficiently recycling the waste heat energy.

Description

technical field [0001] The invention belongs to the waste heat utilization technology of an internal combustion engine, and in particular relates to a system for recovering waste heat from steam pressurization of an internal combustion engine. Background technique [0002] With the increasing shortage of energy and the increasingly severe environmental problems, the energy saving and emission reduction of internal combustion engines has attracted worldwide attention. The use of organic Rankine cycle (ORC) technology to recover waste heat from diesel engines is a current research hotspot. The ORC cycle has high thermal efficiency and safety, and has a simple structure. However, the decomposition temperature of the working fluid used is required to be lower than 350°C, while the exhaust temperature of the internal combustion engine is generally as high as 500-600°C. Higher temperature may cause the decomposition of organic working fluid, which is one of the key points restric...

Claims

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Application Information

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IPC IPC(8): F02G5/04F01K25/10
CPCY02T10/166Y02T10/12
Inventor 李晓宁舒歌群李团兵梁友才王轩
Owner TIANJIN UNIV
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