汤家有，彭育辉，魏建辉.基于电流反馈控制的天然气喷射阀高低压分时驱动电路的设计和试验[J].内燃机工程,2020,41(4):87-92.
基于电流反馈控制的天然气喷射阀高低压分时驱动电路的设计和试验
Design and Test of High and Low Voltage Time Division Driving Circuit of Natural Gas Injection Valves Based on Current Feedback Control
DOI：10.13949/j.cnki.nrjgc.2020.04.011
关键词:天然气喷射阀  升压电源  电流反馈  喷射性能  质量流量
Key Words:natural gas injector  boost power supply  current feedback  injection performance  mass flow rate
基金项目:福建省科技厅产学合作重大项目（2017H6007)
作者单位
汤家有，彭育辉，魏建辉 福州大学 机械工程及自动化学院，福州 350108 
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摘要:在分析和测试单电源天然气喷射阀驱动控制电路性能不足的基础上，提出了一种基于电流反馈高低压分时驱动天然气喷射阀的电路方案，并利用UC3843开关电源芯片实现大功率升压斩波（Boost）型电源模块的设计。基于天然气喷射阀供气量测试台架系统，测试天然气喷射阀在发动机不同转速和喷射脉宽下两种控制方案的供气量，试验结果表明电流反馈高低压分时驱动天然气喷射阀的流量平均相比单电源驱动提升了23.73%，流量线性度得到明显提高。
Abstract:In view of the poor performance of the single power driving circuit of natural gas injection valves, a high and low voltage time division driving circuit scheme based on current feedback control was proposed, and a high-power boost power module was designed using UC3843 switching power supply chips. Then, on a natural gas test rig, the gas supply volume of natural gas injection valves at different engine speeds and injection pulse widths was measured for the above two driving circuit schemes. The experimental results showed that the high and low voltage time division driving circuit using current feedback control could increase the average flow rate of natural gas injection valves by 23.73% compared with the single power driving circuit, and significantly improve the flow linearity.
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