影响汽车发动机动力因素的分析

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1、影响汽车发动机动力因素的分析摘要：发动机动力不足或动力性能下降，反映在车上就是加速性能、爬坡能力差。汽车启步困难，爬坡能力差；忽然加大油门时汽车反应缓慢，行驶中很难在规定的时间内达到最高车速，或完全达不到最高车速，这主要是汽车加速无力的故障。影响汽车动力和加速性能的主要原因有油路原因、电路原因、发动机缸压不足原因等等。关键字：发动机油路原因电路原因缸压不足Abstract:Poweroftheengineorpowerperformancedegradation,reflectedintheperformanceofthecarisaccelerating,hill

2、climbingabilityispoor.Autostart-stepproblems,poorclimbingability;suddenlysteppedonthegaswhenthecarslowtorespond,movingwithintheprescribedtimeisdifficulttoachievethehighestspeed,orwillnotachievemaximumspeed,vehicleaccelerationlargelypowerlessfailure.Vehiclepowerandaccelerationofthemainr

3、easonsareoil,circuitreasons,reasonsoflackofcylinderpressureandsoon.Keywords:engineoilbecausecircuitbecauselackofcylinderpressure目录摘要第34页共34页·····························································11发动机的概述·················································22发动机的总体构造··················

4、···························23发动机的种类·················································63.1按结构分类····················································63.2按发动机布局分类··············································73.3按燃料分类····················································84发动机的工作原理············

5、··································84.1柴油发动机工作原理············································94.2汽油发动机工作原理········································104.2.1四行程汽油机的工作原理····································124.2.2多缸发动机的工作原理······································135发动机的主要性能指标····················

6、······················135.1发动机的最大功率···········································135.2发动机的最大扭矩···········································155.3第34页共34页发动机的最低燃油消耗量······································155.3.1燃油消耗量·················································155.3.2燃油消耗率·················

7、································165.3.3燃油消耗量与燃油消耗率的关系·······························165.4发动机的升功率··············································166影响发动机的动力因素··········································186.1发动机动力不足故障···········································186.1.1故障现象···················