Computer Science ›› 2018, Vol. 45 ›› Issue (6A): 576-579.

• Interdiscipline & Application • Previous Articles     Next Articles

Design of Noise Measurement System for Automobile Injector

ZHU Jun-chao,WANG Tan,ZHANG Bao-feng   

  1. School of Electrical and Electronic Engineering,Tianjin 300384,China
  • Online:2018-06-20 Published:2018-08-03

Abstract: Aiming at the technical requirements of injector noise measurement at home and abroad,a set of noise mea-surement system for automobile injector was designed.The system includes an injector drive module,a system control module,a system oil supply module,a noise measurement module and a man-machine interaction module.The pressure control of oil supply module adopts the pneumatic control method of the membrane conduction combined with the PID feedback to improve the reliability and the precision of pressure control.The system software is designed by using the Windows VS2010 development platform.Using CAN communication,RS232 serial communication technology and multi-thread parallel technology,the whole control of man-machine interaction interface to the noise detection system of injector is achieved.Based on the sound pressure method,the noise of the fuel injector is measured and analyzed,and the performance of the injector is evaluated according to the measurement result.Experimental results show that the maximum sound pressure level and average sound pressure level under A weighting are less than 70db (A) in the standard,meeting the requirements of the standard on fuel tanker’s noise value.

Key words: Injector, Noise measurement, PID algorithm, Pressure control

CLC Number: 

  • TH89
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