请问发动机抖动都有什么原因？发动机抖动是什么原因导致？

发动机抖动是什么原因导致

1、发动机缺缸：发动机缺缸主要指发动机有一个或以上的气缸没有正常工作，通表现为车子排出的废气气流有明显的间歇，同时排气管抖动厉害，能够明显感觉到发动机的抖动，有时会伴随着突突的声音。这种多半和点火线圈故障有关。

2、发动机机脚胶老化：机脚胶就是发动机跟车架之间垫的橡皮胶块。它的作用就是用来减少减少发动机做工时的震动和缓冲，并起到固定发动机的效果。一旦这些机脚胶出现老化或松脱，发动机的抖动就会异常明显。

3、冷启动：汽车在冷启动时，发动机润滑效果比较差，机油流动性差，也比较粘稠，所以会有机械磨损的异响，还有冷车启动，冷却液温度比较低，混合气比较浓，燃烧不充分会导致发动机抖动并，这个一般属于正常现象，热车后会好转。

4、燃油系统故障：添加不适配的燃油标号（例如93号加成了90号），导致汽车输出功率下降，动力降低；或者由于油箱盖通气孔堵塞，油箱开关、燃油滤清器及油箱至化油器之间的油管部分堵塞，不能满足所需油量的供应，导致混合气过稀、发动机抖动。

5、进气系统故障：空气是发动机的动力来源之一，如果空气滤清器长期使用未及时清洗产生堵塞，空气量不足都将造成可燃混合气过浓，使得发动机功率下降；如果是带有涡轮增压器的车辆，其增压装置一旦故障，也会造成发动机在加速时出现抖动。

6、发动机积碳问题：这里的积碳包括气缸积碳、节气门积碳、火花塞积碳、进气积碳等，这些位置刚好和发动机的动力输出息息相关，当发动机内部的积碳过多时，汽车的点火能量减少，进气效率下降，最终导致发动机出现抖动、加速无力的症状。

【英文介绍/For English】：

1. Engine lack of cylinders: Engine lack of cylinders mainly means that one or more cylinders of the engine are not working properly. Generally, the exhaust gas flow from the car has obvious intermittent, and the exhaust pipe vibrates so much that the engine vibration can be clearly felt. Sometimes it is accompanied by a thumping sound. This is mostly related to the failure of the ignition coil.

2. Aging of the engine foot glue: The foot glue is the rubber block placed between the engine and the frame. Its function is to reduce the vibration and buffering of the engine during working, and to fix the engine. Once these rubbers are aged or loosened, the jitter of the engine will be very obvious.

3. Cold start: When the car is cold started, the engine lubrication effect is relatively poor, the oil fluidity is poor, and the oil is relatively viscous, so there will be abnormal mechanical wear noises, and cold start, the coolant temperature is relatively low, and the mixture is relatively Rich, insufficient combustion will cause the engine to vibrate, which is generally a normal phenomenon and will improve after the car is warmed up.

4. Fuel system failure: adding an unsuitable fuel label (for example, 93 is added to 90), resulting in a decrease in the output power and power of the car; or due to the blockage of the vent hole of the fuel tank cap, the fuel tank switch, fuel filter and fuel tank The oil pipe between the carburetor and the carburetor is partially blocked, which cannot meet the supply of the required amount of oil, resulting in the mixture being too lean and the engine shaking.

5. Air intake system failure: Air is one of the power sources of the engine. If the air filter is used for a long time and is not cleaned in time, it will cause blockage and insufficient air volume will cause the combustible mixture to be too rich, which will reduce the engine power; In a turbocharged vehicle, once its supercharging device fails, it will also cause the engine to vibrate when accelerating.

6. Engine carbon deposition problem: The carbon deposition here includes cylinder carbon deposition, throttle valve carbon deposition, spark plug carbon deposition, intake carbon deposition, etc. These positions are closely related to the power output of the engine. When there is too much carbon deposition inside the engine, The ignition energy of the car is reduced, the air intake efficiency is reduced, and eventually the engine appears symptoms of jitter and weak acceleration.

发动机抖动都有什么原因

发动机的正常运转应该是稳定无震动的，但若发动机出现了抖动，说明存在某些问题。发动机抖动的原因很多，如下所述：

1. 点火系统问题：当点火系统中的火花塞或点火线圈老化或损坏时，会发生失火、断火等故障，从而导致发动机抖动。

2. 燃油系统问题：燃油混合比过高或过低，或燃油泵压力不足或阻塞，还有燃油过滤器堵塞等问题，都可能导致发动机抖动。

3. 发动机机械故障：如发动机山形轴、连杆、曲轴、气门等机械部件的损坏、磨损或失调，也能引起发动机抖动。

4. 空气进口系统问题：空气进口管道堵塞或起动机进口温度传感器老化，冷启动时进气太多或太少，造成发动机抖动。

5. 发动机安装问题：若发动机安装时紧固螺栓没有调整好，或发动机支架出现问题，都会引起发动机抖动。