Rapid compression/compression expansion machine combustion performance test bench of internal combustion engine

A technology of compression expander and test bench, which is applied in the direction of internal combustion engine testing, engine testing, machine/structural component testing, etc. It can solve the problems of complex overall structure of the test bench, difficulty in leak maintenance, and large floor space. Achieve the effects of simple and reliable control system, strong adaptability of bench and simplified structure

Active Publication Date: 2020-01-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] Most of the existing fast presses adopt the form of pneumatic drive and hydraulic buffer brake. The overall structure of the test bench is comple...

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  • Rapid compression/compression expansion machine combustion performance test bench of internal combustion engine

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments. The described embodiment is an embodiment of the present invention, but not all embodiments, and should not limit the protection scope of the present invention.

[0023] The internal combustion engine combustion performance test bench based on the fast compression / compression expander of the present invention mainly includes an air supply system and a fast compressor. The air supply system includes valve 1, fuel premixing chamber 2, vacuum pump 3, fuel bottle 4, and cleaning bottle 5; the rapid compression / compression expansion machine includes limit block 6, connecting rod 7, displacement sensor 8, motor stator 9, electric motor Sub 10, high-speed camera 11, ignition needle 12, pressure sensor 13, temperature sensor 14, quartz glass 15, front cylinder cover 16, intake and exhaust ports 17, piston 18, cylinder b...

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Abstract

The invention relates to a rapid compression/compression expansion machine combustion performance test bench of an internal combustion engine, and belongs to the field of internal combustion engine test. The rapid compression/compression expansion machine combustion performance test bench comprises a rapid compressor and an air supply system. A linear motor is used as a power source, a piston is pushed to move, and the structure of the rapid compressor is greatly simplified; by changing a linear motor control strategy, the rapid compressor can work under two modes of rapid compressor (constant-volume combustion) and rapid compression expansion machine (free expansion), and the device is high in applicability; and the rapid compression/compression expansion machine combustion performance test bench has the advantages of adjustable compression-ratio characteristic, multi-fuel applicability and speed variability. By the rapid compression/compression expansion machine combustion performance test bench of the internal combustion engine, the bench structure is simplified, the integral volume is reduced, the complexity of the control system is reduced, and the applicability and the reliability of the internal combustion engine test bench are improved.

Description

technical field [0001] The invention relates to an internal combustion engine combustion performance test bench, in particular to an internal combustion engine combustion performance test bench based on a rapid compression / compression expander, belonging to the field of internal combustion engine testing. Background technique [0002] As a kind of power machinery, the internal combustion engine has greatly promoted the development of today's society, but its development is restricted by the characteristics of high energy consumption and serious pollution. In response to the national energy-saving policy, improving the efficiency of internal combustion engines, reducing energy consumption and emissions of internal combustion engines has become the development trend of energy-saving internal combustion power. The efficiency, energy consumption and emissions of internal combustion engines are affected by various factors such as fuel type, equivalent air-fuel ratio, fuel injecti...

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Application Information

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IPC IPC(8): G01M15/04G01M15/02
CPCG01M15/02G01M15/04
Inventor 贾博儒魏一迪左正兴冯慧华程子文
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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