发动机就像人的心脏,一旦出现问题,汽车就不能工作,所以发动机的维护是非常重要的。许多开车坏习惯会损坏发动机,所以平时对于发动机的维护比较重要。怎样说明车子的性能比较好呢?怎样正确判断发动机的好坏?老司机:车速达到120,不超过这个转速。
转速是证明汽车性能的参考数据之一,他也是发动机的有效功率。之前那一直有人说要证明这辆车性能是否良好,就看他的转速,发动机转速越高,它将运行的次数越多。老司机说这种判断的方式并不科学。当发动机达到一定速度后,性能好不好不应取决于转速有多高,而是看转速有多低,这样的得出的数据才是对的。
修车师傅说,价格不一样的汽车的性能一定不同。120可以作为一个比较好的参照数据,在大家车子的速度达到120时候,一般来说价位在一百万左右的车子转速会较小,五十万的车子最低转速是2100,十万元左右的车子转速大概在2300.由此看来高档车确实好一点,贵有贵的道理,当然这也不是绝对性的。
老司机说,当车速度已经是120了,如果这个时候转速在是2300-2600的范围内,就说明车的性能还是不错的。不过要是车速超过此范围时,驾驶员可能会发现轮胎的抓地力变差,会有飘的感觉车子会不稳定,发动机噪音会很大。虽然此时汽车不会有任何问题,还是说明了不同车子间的发动机差距很大。
原创文章,作者:cesifu,如若转载,请注明出处:http://www.cesifu.com/article/3634.html
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