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发动机故障灯亮,主要是这几个原因引起的!

来源:http://www.jnrunao.com/ 日期:2021-06-04 发布人:runao
发动机故障灯亮是每位车主都不能够忽视的问题,这直接关系到发动机寿命和行车安全等。而发动机故障灯亮,通常是由于以下几个原因造成。
Engine fault light is a problem that every car owner can not ignore, which is directly related to the engine life and driving safety. The engine fault light is usually caused by the following reasons.
空气流量传感器故障
Air flow sensor fault
空气流量传感器也称为空气流量计,它检测吸入的空气量转换成电 信号传递给电控单元ECU,根据佳空燃比,间接让ECU决定喷出多少燃油。如果空气流量传感器或线路出现故障,ECU将得不到正确的进气量信号,就不能进行正常的燃油量控制,从而造成混合气过稀或过浓,发动机无法 正常工作。
Air flow sensor is also known as air flow meter. It detects the amount of air inhaled, converts it into electrical signal and transmits it to ECU. According to the good air-fuel ratio, ECU indirectly decides how much fuel to inject. If the air flow sensor or the circuit fails, the ECU will not get the correct air intake signal, and it will not be able to carry out the normal fuel control, which will cause the mixture to be too lean or too rich, and the engine will not work normally.
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虽然空气流量传感器失常不至于造成发动机无法启动,但诸如怠速不稳、加速不好、进气管回火以及排气管冒黑烟等现象还是极有可能的。
Although the malfunction of the air flow sensor will not cause the engine to fail to start, the phenomena such as unstable idle speed, poor acceleration, backfire of the intake pipe and black smoke from the exhaust pipe are very likely.
火花塞积碳
Carbon deposition on spark plug
市面上质量参差不齐的燃油和拥堵的城市交通使得汽车火花塞很容易产生积碳,火花塞积碳会导致发动机工作不好,出现启动困难、怠速不稳、加速不好、急加油回火、尾气超标、油耗增多等不正常现象。
The uneven quality of fuel on the market and congested urban traffic make it easy for car spark plug to accumulate carbon, which will lead to bad engine operation, such as difficult starting, unstable idle speed, poor acceleration, backfire in emergency refueling, excessive exhaust gas, increased fuel consumption and other abnormal phenomena.
发动机爆震
Engine knock
当发动机吸入油气混合物后,在压缩行程还未到达预计的点火位置、各种控制之外的因素却导致油气混合物自行点火燃烧。此时,燃烧所产生的巨大冲击力与活塞运动的方向相反,引起发动机震动,这种现象称为爆震。表现为汽车行驶无力,发动机噪音过大,严重时伴随有敲缸声音。
When the engine sucks in the oil-gas mixture, the compression stroke has not reached the expected ignition position, and various factors beyond the control lead to the self ignition and combustion of the oil-gas mixture. At this time, the huge impact force produced by combustion is opposite to the direction of piston movement, causing engine vibration, which is called knock. The performance is that the car is weak, the engine noise is too loud, and when it is serious, there is a knock on the cylinder.
发动机缺缸
Engine cylinder missing
很明显,发动机缺缸之后会导致汽车出现耗油量大,冒黑烟,汽车加速无力,抖动严重,发动机噪音也会增 大,还很容易出现车辆熄火状况。造成发动机缺缸主要来自于点火系统和燃油供给系统,包括火花塞积碳,高压油泵损坏等。
Obviously, the lack of cylinder in the engine will lead to large fuel consumption, black smoke, weak acceleration, serious shaking, increased engine noise and vehicle flameout. The main causes of engine cylinder missing are ignition system and fuel supply system, including carbon deposition of spark plug and damage of high pressure oil pump.
无论是哪种情况引起的发动机故障灯亮,都需要使用电脑检测仪进行诊断,如果是假故障码,直接清 除掉就行啦。如果存在真是故障,就需要根据故障码进行排查检修。
No matter what kind of situation causes the engine fault light to be on, you need to use the computer detector for diagnosis. If it is a false fault code, just clear it directly. If there is a real fault, it is necessary to check and repair according to the fault code.
如果仅仅是发动机故障灯亮,车子行驶正常,无明显异样,可继续行驶,有时间到4S店检查一下;如果水温过高或者机油压力警告灯也亮起,能明显感觉到故障存在,还是下车打电话寻求救援吧。
If only the engine fault light is on and the car is running normally without obvious abnormality, you can continue to drive and go to the 4S shop to check if you have time; If the water temperature is too high or the oil pressure warning light is on, you can obviously feel the fault, so you'd better get off and call for help.
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