The YC4D diesel engine set was transformed into an alcohol-hydrogen-diesel dual-fuel en-gine.According to the phase relationship between crankshaft and camshaft,the control system and control strategy of alcohol-hydrogen fuel injection were designed,and the control strategy of fuel in-jection was verified on diesel engine set.The results show that the fuel injection control strategy based on multi-tooth synchronization is reliable,and the speed error is less than 0.13％and the pulse width error is less than 2％,all of which meet the application requirements.
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