汽车使用与维修中存在着一些误念，这些误念是在汽车制造水平低、修理手段落后、检测手段缺乏的年代里长期形成的。这些误念有时看似正确，其实不然，具有很大的危害性，会使车辆受到损失、人身安全受到威胁，而更大的可能是由此埋下了事故的隐患，或造成车辆性能下降、磨损加快、寿命缩短等。

Automobile service and repair of existing some false belief, these false belief is the formation of long-term on the low level of automobile manufacturing, repair means backward, the lack of testing means in the age of. These false beliefsometimes seems right, in fact, has great harm, will make the vehicle damage, personal safety is threatened, and the greater likelihood is thus laid the accident hidden danger, or cause decrease of vehicle performance, wear faster,shorter life.

1、盲目拆掉发动机节温器

1, blindly down the engine thermostat

如果因发动机温度高而盲目拆除节温器，冷却液只能进行大循环，不能调节冷却强度，难以保证发动机在较适宜的温度下工作，反而使发动机经常处于低温状态下工作，造成发动机功率下降，磨损加快，油耗增加。如果发动机节温器发生故障检修或更换之后，发动机温度还高，就应检修冷却系统的其他部位，不能拆除节温器。

Because if the engine temperature is high and the blindly remove the thermostat, cooling liquid can only proceed big circulation, can not adjust the cooling intensity, it is difficult to ensure the engine to work in a suitable temperature, but the engine is often in a state of low temperature, reduction of the power of the engine, wear faster,increased fuel consumption. If the engine thermostat failure repair or replacement, the engine temperature is higher, it should be the other parts of the cooling system maintenance, not removed thermostat.

2、发动机温度怕高不怕低

2, the engine temperature is not afraid afraid of high low

有些人认为行车时发动机温度怕高不怕低。其实，发动机温度低时危害性也很大。应根据汽车使用说明书规定的正常温度行车，才能保证发动机的使用寿命。

Some people think that driving the engine temperature is not afraid afraid of high low. In fact, the engine temperatureis low is also a great harm. Should be based on the normal temperature auto manual provisions driving, can guarantee theservice life of the engine.

3、水泵风扇皮带越紧越好

3, pump fan belt tightening the better

皮带越紧并非越好。皮带过紧不仅会使其拉长或断裂，缩短皮带的使用寿命，而且还会因拉力过大，导致发电机轴、水泵轴变形弯曲和轴承的早期损坏。汽车发动机风扇皮带的松紧度应符合技术要求，一般正常皮带装配时挠曲度为10-15mm为宜。

Belt tightening is not better. Belt too tight will not only make the elongated or fracture, shorten the service life ofthe belt, but also because tension is too large, resulting in early damage of generator shaft, pump shaft bending deformation and bearing. The car engine fan belt tightness should meet the technical requirements, the normal deflection when the belt assembly is appropriate for the 10-15mm.

4、发动机用怠速升温

In 4, the engine idle temperature

用怠速升温时，由于转速较低，机油泵不能较快地将润滑油压入各润滑表面，油压也低，使发动机各运动机件在干摩擦或半干摩擦状态下工作；燃油因低温雾化不良，使未燃烧的燃油窜入曲轴箱，冲刷掉缸壁上的油膜，也会加速机件的磨损。所以，发动机启动数秒后，应用快怠速升温，改善发动机的润滑条件。

With the idle temperature, due to the lower speed, the oil pump can not quickly the lubricating oil into the lubricatingoil pressure is low, the surface, the movement of engine parts in a dry friction or half dry friction state work; fuel due to low temperature atomization bad, cause the unburned fuel into the crankcase, wash away the oil film cylinder on,will also accelerate the mechanical wear. So, start the engine after a few seconds, the application of the fast idletemperature, improve the lubrication condition of engines.

5、用喷灯烘烤油底

5, burner for baking oil bottom

冬季用喷灯烘烤油底，不但会使机油中的添加剂发生化学变化，失去原有的性能，而且还会使机油胶结、油底变形，容易引起火灾。最好的做法是根据当地冬季的最低气温选用相适应的机油。在有条件的地方，最好把车辆停放在有保温设施的车库内。

Winter burner for baking oil bottom, will not only make the additives in the oil and chemical changes, loss of the original performance, but also the oil cement, oil bottom deformation, easy to cause fire. The best approach is based on the minimum temperature in winter oil suitable for use. In areas where conditions permit, the best vehicle park in heat preservation facilities in the garage.

6、轮胎气压宁高勿低

6, the tire pressure is rather high not low

有些人喜欢把轮胎气压充得较高，认为这样既可超载又可节油。这是不正确的。轮胎气压过高，会使轮胎接地面减小，磨损加重，而且还容易爆胎。轮胎气压过高，使轮胎的附着系数减小，降低刹车时的制动效果，增大测滑量，对行车安全造成较大的危害。轮胎气压过低也不好，会造成磨胎肩、折胎、油耗增加等。应按轮胎上标明的标准气压充气，充气量一般在标准气压的±5%较为适宜。

Some people like to put the tire pressure charging higher, think this can overload and fuel saving. This is not true. The tire pressure is too high, will cause the tire ground contact decreases, increased wear, but also easy to burst. The tire pressure is too high, so that the tire adhesion coefficient decreases, reduce the braking effect during braking,measuring the slip amount increases, causing great harm to driving safety. The tire pressure is too low is not good, will cause the tire shoulder, grinding fold tyre, increased fuel consumption etc.. According to the standard tire pressureshould be marked on the inflatable, inflatable volume in general standard pressure + 5% is appropriate.
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