Design Analysis Based on Dynamic Fuel Injection Law
In order to optimize the combustion efficiency of light and heavy duty diesel engines and meet the strict emission regulations,a variable fuel injection scheme based on two injectors was proposed.Simulink was used to build the actuator simulation model,and the simulation was verified in the engine simulation bench.The results show that by controlling the start time and duration of injection of two injectors,different injection pat-terns of square,sloping,boot and reverse sloping can be achieved.Among them,the boot-shaped,square,slope and reverse slope pattern can be realized by the main injection strategy,the slope pattern can be realized by pre-in-jection,and the square pattern can be realized by post-injection.By constructing a variety of fuel injection laws,the optimal fuel injection laws under different working conditions can be realized in the future.
Oil injectorFuel injection lawHigh pressure common rail
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