急，汽车专业英语翻译！The Engine’s System

superhawaii

The Engine’s System
  The engine is an important part of the automobile ,it acts as the heart of a person ,which provides the power that the cars need to run on the road. All the automotive engines today are the Internal Combustion Engines(ICEs) because the fuel is burnt inside their cylinders and the energy is provided.
  ICEs are those heat engines that burn their fuel inside the engine cylinder .ICEs the chemical energy stored in their fuel is converted into heat energy during the burning part of their operation .the heat energy is converted into mechanical energy by the expansion of gases against the piston attached to crankshaft that can rotate .the engines that burn petrol are known as petrol engine .other types of ICEs burn heavier oils ,of these types the diesel engine has come into the widest use.
  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 .

Engine Configurations
   The term engine configuration refers to the way that the cylinders of an engine are arranged. The cylinders can be in-line ,opposed ,or at an angle(V-type) .Within these three basic arrangements ,there are a number of variations .

In-line engine
  With in-line engines , the cylinders are arranged in a straight line ,one behind the other .Most in-line engines have their cylinders vertical ,but some are slanted . That is ,the engine is tilted at an angle to reduce the overall height . These engines are sometimes referred to as slanted engines.
  Some in-line engines have their cylinders horizontal ,so that the engine is more or less on its side . this reduces the overall height of the engine .this arrangement is used mainly in larger commercial vehicles with the engine mounted under part of the cab .the mechanical arrangement of a four-cylinder in-line for a passenger car is shown in Fig. 1-9. The cut0away view in Fig. 1-10 enables the various parts to be identified.

Horizontally opposed engine
  This arrangement has its cylinders arranged in two flat blanks with the crankshaft between them .The engine shown has a short rigid crankshaft with five bearings .A horizontally opposed engine has even firing impulses an good balance .Movement of a piston in one direction is opposed by movement of a piston in the opposite direction .
  Horizontally opposed engines ,with their flat design ,give the engine a low height and also help to keep the centre of gravity of the vehicle low .A low center of gravity gives the vehicle stability .

V-type engines
  With V-type engines ,the cylinders are arranged in two blanks at an angle .This reduces the length of the engine and makes it more compact .This also reduces the length of the crankshaft ,which can be designed to be more rigid than a long shaft .

richie_

LZ   你这也太多了吧。。。。。。。

lancerevo10

楼主，太长了吧，你在学汽车专业的科技英语吧？建议你去买本汽车专业英语词典，图书馆有的

lancerevo10

意思是：发动机系统。发动机是汽车的一个重要部件，就像人的大脑一样，它提供车辆在路上行驶所需要的动力。因为当今的发动机是靠燃油在气缸内燃烧并放出能量的，所以现代的汽车发动机都是内燃机。。。。。。未完待续。。。太长了