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http://dx.doi.org/10.7842/kigas.2018.22.5.18

A Study on Performance Change of Gas Injector with Ambient Temperature Environment  

Kim, Ji-Yoon (Korea Automotive Technology Institute)
Yang, Jeong-Jik (Korea Automotive Technology Institute)
Kim, Jin-Ho (Korea Automotive Technology Institute)
Seo, Ii-Won (Korea Automotive Technology Institute)
Lim, Jong-Wan (Dong Bang Tech Co., Ltd)
Publication Information
Journal of the Korean Institute of Gas / v.22, no.5, 2018 , pp. 18-23 More about this Journal
Abstract
This study tries to analyze the injection amount of injector according to the external environment temperature of CNG vehicle. Especially, We investigated the effect of low temperature environment on gas injector performance by measuring the variation of injection amount under the same conditions as in coldstart condition. This experimental compared two products with different spring characteristics. The experimental device consist of a fuel supply unit, a flowrate measurement unit, a temperature chamber, and an injector control unit (ECU). According to the test result, the initial injection amount of the injector is increased in the low temperature environment and the needle opening time is delayed according to the change of the spring length.
Keywords
Natural Gas Vehicle; CNG Injector; Solenoid; Coldstart; Injection Control;
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  • Reference
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