Title: REAL TIME FUEL INJECTION IN SI ENGINE USING ELECTRONIC INSTRUMENTATION
Abstract: To meet the present stringent emission norms. These systems are generally termed as Electronic Fuel Injection (EFI) systems. The fuel is injected into the throttle body or into the inlet manifold through an electronic fuel injector, which is controlled by an Electronic Control Unit (ECU). The quantity of fuel injected by the injector plays a vital role as far as performance and emission characteristics of spark ignition engines are concerned. This paper deals with the static and dynamic fuel injection characteristics of two gasoline fuel injectors. The effect of different injection parameters like fuel injection pressure, injection duration, supply voltage to injector and engine speed on the quantity of fuel injected have been studied for two injectors. The injection dead time and its variation with respect to fuel pressure and supply voltage to injector have been analyzed. Based on the analysis of results, an empirical formula has been obtained to determine the dynamic fuel injection quantity from the static fuel injection characteristics and it was compared with the measured values. It is found that the empirical formula developed in this work gives reasonably good results and therefore, it can be used with confidence for predicting the dynamic characteristics of any given injector from its static injection characteristics.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 1
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