电控喷油器流量特性试验台的开发与试验分析

Exploitation of Test Dais for Flow Characteristics and Test Analysis of Electronic-Controlled Injectors

分析了电控喷油器的喷油过程和驱动电路形式对其流量特性的影响,详细介绍了所设计的喷油器流量试验台及其控制单元的组成及原理。以高阻型喷油器为例,在整个流量范围内对其进行测试并对测试数据加以分析总结,得出了该喷油器流量特性的一些重要参数。比较了电压和油压对流量特性的影响,并提出了相应的补偿措施。测试系统为喷油器的开发提供了一个良好的测试平台。

This paper described the injection process of electronic-controlled injector and influences of driver circuits on its flow characteristics. The designed flow test dais and electronic control unit along with their operation principle were introduced. Taking a high resistance injector as an example, the test data gained in the whole flow range had been analyzed and summarized in order to educe some important flow characteristics parameters. Besides, different voltages and fuel pressures working on flow characteristics were compared and the compensation measures had been provided. The test system also offers a favorable platform for the exploitation of the injectors.