英语翻译Diesel and petrol engines have the same mechanical parts ,except that diesel components are generally stronger and heavier .both engines are internal combustion engines ,but they have intake stroke .A petrol engine takes in an air-fuel mi

英语翻译Diesel and petrol engines have the same mechanical parts ,except that diesel components are generally stronger and heavier .both engines are internal combustion engines ,but they have intake stroke .A petrol engine takes in an air-fuel mi
英语翻译
Diesel and petrol engines have the same mechanical parts ,except that diesel components are generally stronger and heavier .both engines are internal combustion engines ,but they have intake stroke .A petrol engine takes in an air-fuel mixture .Following are some general comparisons between diesel and petrol engines:
In a diesel ,the fuel is injected into the cylinder as a fine spray near the top of the compression stroke .With a petrol engine ,the fuel is injected into the intake ports at the start of the induction stroke.
Ignition in a diesel is by the high temperature from the highly compressed air .A petrol engine needs a spark for ignition .
Diesel engines generally operate at lower engine rpm than petrol engines .
Diesel engines use distillate for fuel ,which is less volatile than petrol .
The design of diesel engines makes them noisier than petrol engines and they have a unique
Diesel knock .
Small diesel engines ,as petrol engines ,are used in passenger cars and light commercial vehicles .Larger diesel engines are used in all heavy commercial vehicles ,earthmoving equipment ,and farm machinery .
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英语翻译Diesel and petrol engines have the same mechanical parts ,except that diesel components are generally stronger and heavier .both engines are internal combustion engines ,but they have intake stroke .A petrol engine takes in an air-fuel mi
柴油和汽油引擎具有相同的机械部件,但是柴油引擎通常具有较强的和较重的组件.两款引擎都是内燃发动机,他们有进气行程.汽油引擎用空气-燃料混合物. 以下是柴油和汽油引擎之间的一般性的比较：
在柴油引擎,燃料是在压缩行程时为细雾注入汽缸.在汽油引擎,燃料是在进气行程开始时被注入到进气口.
柴油点火是从高温由高度压缩的空气.汽油需要一个火花或点火.
柴油引擎转数比比汽油引擎低.
柴油引擎使用的燃料是馏分油,挥发率低于汽油.
柴油引擎的设计使得它们比汽油引擎的大声,也有一个独特的柴油机敲.
小型柴油和汽油引擎用于客车和轻型商用车辆.重型商用车,推土设备,和农业机械都使用大型柴油引擎.