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http://dx.doi.org/10.15435/JILASSKR.2013.18.2.087

Study on Injection Response of Servo-Hydraulic Injector with Different Actuation Method  

Kwon, J.W. (숭실대학교 대학원 기계공학과)
Jeong, M.C. (숭실대학교 대학원 기계공학과)
Lee, J.W. (숭실대학교 기계공학과)
Publication Information
Journal of ILASS-Korea / v.18, no.2, 2013 , pp. 87-93 More about this Journal
Abstract
In this paper, high-pressure injection characteristic of servo hydraulic injector as the key component of diesel CRDi system, which is driven by solenoid and piezo-actuator were examined by experimental analysis. High-pressure injection characteristic of standard diesel fuel injected at high pressure up to 160 MPa was investigated at high-pressure chamber by using a high-speed camera for spray visualization and quantitative analysis. By this study, we found that the piezo-driven injector has better performances in controlling the fuel injection with the high pressure, including fuel quantity, spray penetration length and spray velocity, than that of a solenoid-driven injector. In particular, the needle response time for start of injection in piezo-driven injector was faster of about $125{\mu}s$ than that of solenoid-driven injector. Consequently, it is known that the piezo-driven injector has more degrees of freedom in controlling the fuel injection with the high pressure than solenoid-driven injector.
Keywords
Servo Hydraulic Injector; CRDi; High speed camera; Spray visualization; Spray velocity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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