Investigation On Different Fuels Cold Starting And Warming Up Of Gasoline Engine With EFI

AS the automobile producing and selling progressed rapidly recently in China, pollution caused by car emission has become a serious social problem in our nation. Meanwhile, with human being getting increasingly consciousness of environment problem, the research of internal combustion engine is focusing on environment benefits such as fuel consumption, emissions, noise and so on.The details as follows:1. Multi-channel transient SI engine combustion analyzer has been developed. Pressure inside cylinder,Φa and exhaust emissions can be measured by this analyzer. The thermal circulation changes are calculated through ht numerical analysis.2. An electronic control rapid burning system with high-energy, dual-spark plug ignition system is developed creatively, including modified cylinder head, two independently adjustable high-energy-ignition systems. Synchronizing and asynchronous ignition timing can be realized by ECU and control strategy according to engine operation condition.3. Study on cold start burning characteristics and analyze the main factors affecting the burning and HC emissions, such as injection pulse width, ignition timing and different ignition modes.4. Research on burning and emission characteristics at warming up process. Test on the reasons of ignition timing and different ignition modes for combustion stability and HC emissions at warming up process.5. Comparison the cold start performances at LPG , gasoline and kerosene,then analysis the causes of these phenomena.