Combustion Performance Test Bench of Internal Combustion Engine Based on Rapid Compression/Compressor Expansion Machine

Abstract

The invention relates to a combustion performance test bench of an internal combustion engine based on a rapid compression / compression expander, belonging to the field of internal combustion engine testing. The invention includes a fast press and an air supply system. The present invention uses a linear motor as a power source to push the piston to move, which greatly simplifies the structure of the fast compressor; by changing the control strategy of the linear motor, the fast compressor can work in a fast compressor (constant volume combustion) and a fast compression expander (free expansion) ) Under the two modes, the device has strong adaptability; it has the characteristics of adjustable compression ratio, multi-fuel adaptability and speed variability. The internal combustion engine combustion performance test bench based on the rapid compression / compression expander of the present invention simplifies the bench structure, reduces the overall volume, reduces the complexity of the control system, and improves the adaptability and reliability of the internal combustion engine test bench sex.

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...

AI Technical Summary

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 complex and occupies a large area. At the same time, the use of hydraulic pressure and pneumatic pressure brings problems such as leakage and difficult maintenance.

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