Investigation and improvement of piezoelectric fuel injector with self sensing control and vci method for biodiesel injection

Abstract

At present, some of the changes in global climates, power crises, environmental pollution, noises, and fuel consumption are caused by fuel and fuel injectors. Therefore, biodiesel has been introduced instead of diesel to overcome the above problems. In diesel engines, blends of biodiesel have been utilized without any foremost alteration. The fault of the diesel engine s fuel injector can affect the fuel injection quality and poorer the process of combustion in the engine directly that directs to the worsening of the diesel engine s work. Therefore, in this research, the following methods are proposed to develop the diesel fuel injector for biodiesel injections. Piezoelectric fuel injector with self-sensing control and VCI method for biodiesel injections. Sequential Fuel Injection Improvement for biodiesel injections In the first study, a piezoelectric fuel injector is designed for biodiesel injection using analysis of spray pattern and ignition time, and control of corrosion in a diesel engine. In this study, the sorghum oil and Rapeseed oil are applied as biodiesel blends to test the presented fuel injector. In IC engines, noises, emission, and fuel consumption can be decreased and the process of diesel injections is controlled directly by using the piezoelectric fuel injector. The fuel has not been mixed entirely in the process of conservative piezoelectric fuel injectors. Hence, some modifications are made by the proposed method in piezoelectric fuel injector design for biodiesel injections. The piezoelectric fuel injector is designed in three phases that are piezo actuator with the self-sensing control model, the thermal compensator and the body of the valve to improve the work of fuel injector that can be used to reduce the fuel consumption. The computational fluid dynamics (CFD) and Reliability Centered Maintenance (RCM) methods are combined to analyze the spray pattern for the reduction of ignition time delay. This kind of spray pattern analysis used to improve the accuracy and to reduce the complex operation during the injections of biodiesel in a fuel injector. CFD method can use the numerical analysis to find the problem of functions of the location of the fuel injector, spark plug, valve body, four strokes and operation of the piezoelectric fuel injector engine. After that, the RCM method can be exploited to expand the scheduled maintenance plans that are generated by CFD. Finally, The Volatile corrosion inhibitor (VCI) is applied to the piezoelectric injector engine to eliminate the corrosion while using biodiesel injections. In the second study, Sequential Fuel Injector (SFI) is expanded in internal combustion (IC) which is called a timed injection it can remain generates. The experimental results of the proposed fuel injector can provide less ignition time delay and less corrosion with 95% accuracy compared to the conventional fuel injectors newline