Development About The Electronic Control Unit Of Dual-Fuel Automobile In Combustion Ejecting

Along with problems of the lacking of energy and the polluting environment becoming increasingly outstanding, researches on the engine EFI technique and the clean energy are highly concerned. At the same time, because China is a developing country with plentiful gasfired resources, combining with the states of our nation, the dual-fuel automobile using substitute fuel will have the important realistic meaning. Gasfired (primarily the compressed natural gas and the liquefied petroleum gas) automobile has excellent discharge and fine economy, thereinto the liquefied petroleum gas is widely used at 80% of the whole market. As a sort of clean fuel used in automobile engine, its application is highly considered by each country, and many research institutes are taking up with the researches on automobile engine burning the liquefied petroleum gas. Basing on LPG engine's research actuality and its developing trend, this paper has put forward a project that a LPG entering gas way spaying with its realization.The chiefly studying contents of this paper are the following:1. Firstly, confirming the composes of the electric control unit to be developing in this paper based on the structure Characteristic of Jetta and the modern gasfired automobile techniques.2. The developing and debugging of hardware circuit has been done. The hardware circuit includes the signal gathering of gasoline nozzle, gasfired pressure, water temperature and oxygen sensor, multi-oscillator conjuncted with 555 timer, and also the designing of extending and driving circuit of singlechip periphery program memory. At one time, for the facility of experimentation, this paper has designed a set of on-line modifying and storing system.3. The software has been worked out and debugged combined with the hardware circuit, the programs transforming the signal of gasoline nozzle into gasfired nozzle and reading & writing serial memory in the on-line modifying andstoring system are included.4. The simulated experiment has been done to the electric control system developed by myself.