The Development And Research Of On-board Diagnostics System For Common Rail DI Diesel Engine

For meet more and more strict emission regulation and improve economy, power nature demand of diesel engine further, the application of electronic technology is a current trend of the industrial development of automobile. Wide application of Electronic technology is it accuse of systematic structure more and more complicated to make, when breaking down, judge the trouble reason and find the fault part becoming more and more difficult. The on-board diagnostics system for automobile is come into being under this background, main function of on-board diagnostics system through monitor in real time to engine operation state, when fault happen, not merely alert the driver by flashing fault light, store corresponding diagnostic trouble code (DTC) and failure record, and will also enter remedial action automatically. Because on-board diagnostics system can greatly improve engine endurance and reliability, so on-board diagnostics system become between market service and new car dispatch from the factory the indispensable means while checking at present already automatically controlled trouble of engine. The development of the on-board diagnostics system is exactly a trend of complying with development of the world engine trade.This thesis comes from the project of cooperation of YUCHAI- Shanghai Jiaotong University that "The development of YC6112ZLQA HPCR(high-pressure common rail) electronically controlled diesel engine ". This paper is on the basis of document and materials of the...