发明授权
US06792929B2 Method for detecting failure of injection fuel heaters of internal combustion engine 失效
内燃机喷油燃料加热器故障检测方法

Method for detecting failure of injection fuel heaters of internal combustion engine
摘要:
To detect a failure of the fuel heaters of a multi-cylinder internal combustion engine of vehicles by utilizing a microcomputer of a vehicle operation control device and sensors already provided in the vehicle such as an air/fuel ratio sensor or a crankshaft rotation sensor, with a supplement of substantially only a software, a failure of the heater corresponding to one of the cylinders is detected based upon a change exhibited in at least one parameter with regard to the operating conditions of the engine such as exhaust air/fuel ratio, crankshaft rotation angular speed, etc. by the injected fuel not having been heated as expected by a predetermined operation of each heater.
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