Free piston expander-linear generator vehicle waste heat recovery system based on composite power system

A waste heat recovery system and linear generator technology, applied in the field of energy saving and emission reduction, can solve the problems of poor temperature characteristics, short cycle life, short driving range, etc.

Active Publication Date: 2019-04-12
BEIJING INFORMATION SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the above-mentioned gasoline-electric hybrid vehicles and the hybrid vehicles formed by using the organic Rankine cycle system, such as: when the internal combustion engine works alone, the fuel utilization rate is low and the fuel consumption is high, about 1/3 Energy is released into the atmosphere through the exhaust
The specific power of the battery is small, the cycle life is short, the temperature c...

Method used

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  • Free piston expander-linear generator vehicle waste heat recovery system based on composite power system
  • Free piston expander-linear generator vehicle waste heat recovery system based on composite power system

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Embodiment 1

[0023] Embodiment 1: The present invention will be described in further detail below in conjunction with accompanying drawing.

[0024] like figure 1 , 2 As shown, a free piston expander-linear generator vehicle waste heat recovery system based on a composite power supply mainly includes an organic Rankine cycle system, a composite power supply system, and a control system. Specifically include: 1. Vehicle internal combustion engine; 2. Compressor; 3. Turbine; 4. Evaporator; 5. Free piston expander-linear generator; 6. Condenser; 7. Liquid storage tank; 8. Working medium pump ;9. AC / DC converter; 10. Bidirectional DC / DC converter; 11. Super capacitor; 12. Battery; 13. Indicator one; 14. Indicator two; 15. Power divider; 16. DC / DC Converter; 17. Drive motor; 18. Control unit; 19. Intake valve one; 20. Intake valve two; 21. Exhaust valve one; 22. Exhaust valve two; 23. Pressure sensor one; 24. Temperature Sensor one; 25. Electric valve one; 26. Electric valve two; 27. Tempera...

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Abstract

The invention relates to a free piston expander-linear generator vehicle waste heat recovery system based on a composite power system, and belongs to the field of energy saving and emission reduction.A novel free piston expander-linear generator integrated unit is provided to serve as a thermoelectric conversion device, and the new vehicle waste heat recovery system is designed based on the composite power system; and by means of the system, engine exhaust energy is converted into high-grade electrical energy to be used for driving motors through the composite power system. The system can effectively improve the fuel economy of the engine, reduces fuel consumption, reduces CO2 and pollutant emission, meanwhile, prolongs the service life of a battery and meets the requirements of a vehicle-mounted power supply for high energy and high power.

Description

technical field [0001] The patent of the invention relates to a waste heat recovery system for a free piston expander-linear generator vehicle based on a composite power supply, which belongs to the field of energy saving and emission reduction. Background technique [0002] Energy is the driving force of social and economic development, and energy security is the basis for ensuring national security and sustainable development of the national economy. The growth of automobile production and ownership is bound to cause a large amount of energy consumption and severe environmental pressure. CO emissions from internal combustion engines used in vehicles 2 About the world's CO 2 1 / 4 of the total emissions. From the perspective of the energy balance of the internal combustion engine for vehicles, only 30%-45% (diesel engine) or 20%-30% (gasoline engine) of the total heat of fuel combustion is used for power output, and the rest of the energy is mainly discharged through the co...

Claims

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Application Information

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IPC IPC(8): F01K23/06F01K25/10F01B21/02F01B23/10F01B11/00H02K7/18B60L50/40B60L50/60B60L58/10
CPCF01B11/009F01B21/02F01B23/10F01K23/065F01K25/10H02K7/1884Y02T10/64Y02T10/70
Inventor 童亮许永红刘荣任继愈党瑾希万斌
Owner BEIJING INFORMATION SCI & TECH UNIV
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