Experimental and Numerical Study on the Fuel Pressure Fluctuations Aroused by the Injector for the Electronic Unit Pump System

Liu, Fushui; Kang, Ning; Li, Yikai; Wang, Pei

doi:10.4271/2017-01-2217

Cited by 1 publication

(1 citation statement)

References 15 publications

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“…While analyzing the injector work, the following needs to be noted: The fuel flow is determined using Coriolis mass flow meters [18]. The engine rotational speed signal is also used for this purpose, as well as the system adaptation counter corresponding to changes in the subassemblies, pressure fluctuations in the intake manifold, and fluctuations of the fuel pressure related to dosage [19,20]. Modifications of the injector work are reflected in the combustion process in the engine [21], which translates into a change in the number of toxic substances in the exhaust gases.…”

Section: Introductionmentioning

confidence: 99%

Method of Fuel Injector Diagnosis Based on Analysis of Current Quantities

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et al. 2022

Sensors

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This paper discusses a method of diagnosing electromagnetic valves of injection systems in combustion engines. Based on multiple analyses of electrical quantities occurring in the course of the electromagnetic injector work and physical relationships between them, the quantities have been demonstrated on which the fluctuation of the electromagnetic force in the injector depends. Moreover, the results of its fluctuations have been mapped to the electric quantities controlling the fuel injector’s work. The research has shown that the current and voltage waveforms contain information on electrical properties of the injector coil and its mechanical properties determining the injector’s technical health as well as that of the fuel system.

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