Research On A Electronic Controller Of Autocycle Engine

Autocycle is a amount traffic machine in our life, it is can be seen in city, suburb, country and so on. In particular, china keep continuance economy developing, it is the preferred traffic machine for countrymen, who are wealth step by step. It bears vastness mass convenient; at same time bring environment serious pollution, especially whistle stop and country. Moreover, china have been the secondly petroleum consume nation inferior to first nation—USA, comparatively the situation of china, petroleum resource isn't abundant. It is the urgently issue to settle in the near future, how to raise the petroleum using ratio, raise fuel economy character and power character.It is development necessity EFI replace carburetor. It can implement rigor control air fuel ratio, optimize burning process, reduce engine fuel supply, reduce burning outcome, reach machine oil cleanse, optimize power output and let. It imposes MCU control single vat engine mix gas, spurt fuel, ignition and so on. Implement the best air fuel ratio and the best ignition advance angle control, then it have good performance, good fuel economy. At same time, due to burn entirety, exhaust lustration.First of all, the paper balances some classical systems and their work theories, make certain fuel supply system, air electron control system; the emphases of them are make certain Throttle Speed carry through air fuel ratio control, engine inlet eject, base on magnetoelectricity dynamotor angle sign transform to speed signal. Have analysis the demand of the system reliability, bring forward disturb is above all factor to affect system steady, and use anti-jamming techniques, like optically coupled isolator and so on, to ensure system work well.Have contrast and analysis on sensors in common use, choose upper price performance manufactures, and have demarcated those bases on classic demarcate theorem. Base on signal analytic to JIEDA brand JD125 autocycle, use electron knowledge and Electronic Design Automation-EDA, have finish a lots simulation designs. Through examine and modify, then use Protel software to work out the PCB board of the system, at last complete seal and so on.Refit JIEDA brand JD125 autocycle, add EFI setting, fit sensors and actuators, signals collection and drive output are good. Finally, solve questions of high emission, low economic performance, of autocycle use gasoline engine, improve its emission and economic performance. Experiment result indicate, aim at autocycle in existence, EFI alteration is effective and doable. For EFI refit to auto bike in existence, provide a convenient, economic mode.