Abstract
In one-time starting process of CI free piston linear generator, the starting energy in one cylinder always influence the combustion process in the other cylinder. And the ignition delay has a great influence on the performance of the system running in the process. Based on this influence, two strategies of injection controlling are proposed, which are triggered by displacement signal and velocity signal, respectively. With the strategy of injection triggered by displacement signal, the influence of injection position to MEP, compression radio and other performance parameters of two cylinders are discussed. The velocity injection strategy utilizes the same model and the kinetic energy of piston assembly in different key position is considered as the impact indicator. This parameter and the injection time are interacted with each other, and they can influence the combustion performance of two cylinders. Finally, this paper describes the applicability of two strategies and concludes that the strategy of injection triggered by velocity is more suitable for CI free piston linear generator in process of starting.
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