【文章內容簡介】
avoid putting in the open air, each cylinder exhaust back pressure between uniformity of the burning and the consequent deterioration, get through two exhaust passage, so as to minimize exhaust back pressure not uniformity. 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 33 4. Gas supply and ignition the characteristics of the system ECS Engine Control System Engine control unit ECM use advanced software control electronic throttle and ignition timing. No matter what the condition, for example, high altitude, high temperature or humidity is high, ECM system can make use of the engine temperature, humidity and the monitoring of atmospheric pressure sensor feedback to the operation of the engine of the numerical value of adjustment, make the engine keep the best performance and fuel economy. Highenergy electronic ignition ECM system control is located directly on the spark plug the high energy ignition coil work, not through any high voltage wires, reduce the energy of the ignition loss, and choose platinum electrode spark plug, extended its service life, increase the bustion efficiency, thus reduce the emissions. 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 34 fuel supply Through the rapid reaction pressure regulator and the optimal control of empty fuel mixer, engines get continuous fuel supply to reach optimization, achieve the best fuel economy and the lowest emissions. Slow down off fuel function During deceleration, ECM system to stop supply gas, intelligent control electronic throttle valve reduce waste gas and put turbocharger speed to get the best fuel economy. 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 35 Overspeed protection function When the engine speed than the set speed, the system automatically cut off fuel supplies, make speed down. Adaptive function The exhaust oxygen sensors for fuel and oxygen consumption measurement engine provide feedback signal, make the engine has been can continue to adapt to changing conditions, and always maintain the best working condition. 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 36 selfdiagnosticfunction Engine management system to provide a full range of standard diagnostic information J1939, and can occur in many serious problems detected before these problems. Communication ECM system CAN through the CAN bus connections, and CAN be easily obtained other system of vehicles munications. 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 37 Natural gas engine control system 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 38 Natural gas engine structure control principle diagram 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 39 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 40 ECM 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 41 Electronic throttle Electronic throttle controller is used to control the airfuel mixture into the engine of rate, so as to realize the load control and adjustment of the auxiliary function. The characteristics of electronic throttle is fast transient response ability. Can realize in 50 ms open to shut in. 中國重汽天然氣發(fā)動機培訓 2022/2/12 濟南復強動力有限公司 42 A