Study of Injection Strategy for Diesel Start

Three different methods,such as constant fuel,smooth decrease fuel and step decrease fuel were studied in the paper for diesel start based on fuzzy PID(Proportion Integration Differentiation) idle control strategies.It was showed by test results that there will be incomplete combustion cycles with constant fuel and smooth decrease fuel strategies during start state,so emission of diesel was high.There were no misfire cycles during start with the strategy of step decrease fuel,therefore combustion processing and emission were better for start state.