Organic rankine cycle air inflow supercharging internal combustion engine system and method

A Rankine cycle, intake boosting technology, applied in the direction of internal combustion piston engine, machine/engine, mechanical equipment, etc., can solve the problems of complicated system and large heat loss, achieve high efficiency and environmental protection of the system, small loss of working power, The effect of small heat exchange temperature difference

Inactive Publication Date: 2018-08-07
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an organic Rankine cycle air intake supercharged internal co

Method used

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  • Organic rankine cycle air inflow supercharging internal combustion engine system and method
  • Organic rankine cycle air inflow supercharging internal combustion engine system and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1:

[0025] Such as figure 1 As shown, figure 1 It is a schematic diagram of the overall structure of the system. The organic Rankine cycle intake supercharged internal combustion engine system, the organic Rankine cycle or ORC, includes: internal combustion engine 1, compressor 2, intercooler 3, preheater 4, evaporator 5, and expander 6. , Generator 7, condenser 8, liquid storage tank 9 and working fluid pump 10.

[0026] The inlet of compressor 2 is connected with the outside air, the outlet of compressor 2 is connected with the first inlet of intercooler 3, the first outlet of intercooler 3 is connected with the inlet of internal combustion engine 1, and the second inlet of intercooler 3 is connected with the outlet of working fluid pump 10 , The second outlet of the intercooler 3 is connected with the inlet of the preheater 4, the preheater 4 is connected with the second inlet of the evaporator 5, the exhaust outlet of the internal combustion engine 1 is connecte...

Example Embodiment

[0034] Example 2:

[0035] Such as figure 2 As shown, an organic Rankine cycle intake supercharging method includes the following steps:

[0036] S1: The expander uses steam to do work and then drives the compressor to run. The steam that has done work enters the organic Rankine cycle system for reuse.

[0037] The second outlet of the evaporator 5 is connected to the inlet of the expander 6, the expander 6 is connected to the compressor 2 and the generator 7, the outlet of the expander 6 is connected to the inlet of the condenser 8, and the outlet of the condenser 8 is connected to the inlet of the liquid storage tank 9 , The outlet of the liquid storage tank 9 is connected with the inlet of the working fluid pump 10. From this structure, it can be seen that the organic working fluid absorbs heat in the evaporator 5 to become saturated steam or superheated steam, and then enters the expander 6 to expand and perform work. Part of the mechanical work output by the expander 6 is co...

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Abstract

The invention provides an organic rankine cycle air inflow supercharging internal combustion engine system and method. The system comprises an internal combustion engine, a gas compressor, an intercooler, a preheater, an evaporator, an expanding agent, an electric generator, a condenser, a liquid storage tank and a working medium pump. According to the organic rankine cycle, low-boiling-point organic matter serves as a working medium, the intercooler, the preheater and the evaporator sequentially absorb compression air heat, cooling liquid heat and engine tail gas waste heat, saturated steam or overheat steam is generated and enters an expanding machine for doing work, the electric generator is driven to generate power, and meanwhile, power is provided for the gas compressor for internal combustion engine air inflow supercharging. According to the system, on the one hand, the ORC expanding machine replaces a turbine in a turbine supercharging internal combustion engine, and equipment can be simplified; on the other hand, the working medium absorbs heat in a stair manner from different devices, the heat exchange temperature difference is small, the work doing energy loss is small, the internal combustion engine waste heat can be used to the maximum degree, the main energy use efficiency is maximum, and the whole system is efficient and environment-friendly.

Description

technical field [0001] The invention relates to the field of waste heat utilization of internal combustion engines, in particular to an organic Rankine cycle intake boost internal combustion engine system and method. Background technique [0002] From the perspective of the energy balance of the internal combustion engine, the output effective power generally only accounts for 30%-45% of the total heat of fuel combustion (diesel engine) or 20%-30% (gasoline engine), except that less than 10% is used to overcome power losses such as friction In addition, the remaining waste heat energy is mainly discharged into the atmosphere through exhaust gas (200-700°C) and cooling medium (cooling water, engine oil heat dissipation, etc., 85-120°C). Therefore, the efficient conversion and reuse of the waste heat energy of the internal combustion engine is an effective way to improve the total energy efficiency, reduce fuel consumption and reduce pollutant emissions. [0003] In order to ...

Claims

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Application Information

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IPC IPC(8): F02B39/08F01K25/08F01K17/04
CPCF01K17/04F01K25/08F02B39/085Y02T10/12
Inventor 余万苏华山
Owner CHINA THREE GORGES UNIV
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