汽車專業(yè)英語發(fā)動機課件

1、Unit 2-1Main Components of Engine Unit 2-1Main Components of En2一、發(fā)動機的分類Clissified by fuel（按燃料不同分類）汽油機和柴油機；Clissfiled by working progress（按工作行程分類）四沖程發(fā)動機和二沖程發(fā)動機；Clissfiled by cooled ways（按冷卻方式分類）水冷發(fā)動機和風(fēng)冷發(fā)動機；Clissfiled by number of cylinder（按氣缸數(shù)量分類）單缸發(fā)動機和多缸發(fā)動機2一、發(fā)動機的分類Clissified by fuel（按燃3Clissified

2、by fuel（按燃料不同分類）汽油發(fā)動機gasoline enginegasolinegslin n. 汽油 點燃方式（點燃式）3Clissified by fuel（按燃料不同分類）汽油4柴油發(fā)動機diesel enginedieseldi:zl n. 柴油 ，柴油機點燃方式（壓燃式）4柴油發(fā)動機點燃方式5Clissfiled by working progress（按工作行程分類）二沖程發(fā)動機Two stroke enginestrokestrk n. 沖程，行程；活塞反復(fù)運動一次，曲軸轉(zhuǎn)動一周，兩個沖程完成一個工作循環(huán)。5Clissfiled by working progres6四沖

3、程發(fā)動機Four stroke enginestrokestrk n. 沖程，行程；活塞反復(fù)運動兩次，曲軸轉(zhuǎn)動兩周，四個沖程完成一個工作循環(huán)。6四沖程發(fā)動機活塞反復(fù)運動兩次，曲軸轉(zhuǎn)動兩周，四個沖程完成一7水冷卻式發(fā)動機Water coolest engine水箱，通過水泵作用，水通過水道流通整個汽缸體，進行降溫。7水冷卻式發(fā)動機水箱，通過水泵作用，水通過水道流通整個汽缸體8風(fēng)冷卻式發(fā)動機air coolest engine風(fēng)冷，通過空氣氣流與風(fēng)扇作用，空氣/風(fēng)通過發(fā)動機整個汽缸體，進行降溫。8風(fēng)冷卻式發(fā)動機風(fēng)冷，通過空氣氣流與風(fēng)扇作用，空氣/風(fēng)通過發(fā)9Clissfiled by number

4、of cylinder（按氣缸數(shù)量分類）單缸發(fā)動機Single cylinder enginecylinder slnd n. 氣缸我只有一個氣缸，一組氣門；9Clissfiled by number of cylin10多缸發(fā)動機Multi cylinder enginecylinder slnd n. 氣缸我有多個氣缸，多組氣門；10多缸發(fā)動機我有多個氣缸，多組氣門；11二、發(fā)動機的基本組成11二、發(fā)動機的基本組成12汽油機包含幾大系統(tǒng)？冷卻系 cooling system潤滑系 lubrication system lu:brken 潤滑，加油; 油潤;起動系 starting syst

5、em點火系 Ignition system gnn12汽油機包含幾大系統(tǒng)？冷卻系 cooling s燃油供給系 fuel supply system進氣系統(tǒng) intake system排氣系統(tǒng) exhaust system gz:st13燃油供給系 fuel supply system114Cooling system (冷卻系統(tǒng))Starting system (起動系統(tǒng))14Cooling system (冷卻系統(tǒng))Sta15Lubrication system (潤滑系統(tǒng))Ignition system (點火系統(tǒng))15Lubrication system Ignit16Fuel sup

6、ply system (燃油供給系統(tǒng))intake system (進氣系統(tǒng))16Fuel supply system intak17例句分析：Engine system includes ：_、_、_、_. 中文：include vt.包括，包含； 譯文：發(fā)動機系統(tǒng)包括：_、 _、_、 _。 ignition systemstarting systemlubrication systemcooling system點火系統(tǒng)起動系統(tǒng)潤滑系統(tǒng)冷卻系統(tǒng)17例句分析：Engine system includes 18汽油機包括哪兩大機構(gòu)？Crank-connecting rod mechanism曲

7、 柄連桿機構(gòu)18汽油機包括哪兩大機構(gòu)？Crank-connecting 19配氣機構(gòu)Valve mechanism氣 門機 構(gòu)19配氣機構(gòu)Valve mechanism氣 門機 構(gòu)20Intake 進氣 Compression壓縮Exhaust排放Power做功Stroke . /struk / n. 打擊；中風(fēng)；筆畫；沖程；嘗試；輕撫 三、發(fā)動機的四大工作行程20Intake CompressionExhaustPow21四、發(fā)動機的布置形式發(fā)動機前置前輪驅(qū)動發(fā)動機前置后輪驅(qū)動發(fā)動機后置后輪驅(qū)動21四、發(fā)動機的布置形式發(fā)動機前置發(fā)動機前置發(fā)動機后置22課堂小結(jié)需要記住的單詞：發(fā)動機底盤車身電

8、器系統(tǒng)汽油柴油沖程EngineChassisBodyElectrical systemGasolineDieselstroke22課堂小結(jié)需要記住的單詞：Engine23單獨的，獨立的氣缸曲柄連桿機構(gòu)配氣機構(gòu)SinglecylinderCrank-connecting rod mechanismkrkn.機曲柄;妙語，奇想rd n.桿，拉桿;懲罰，體罰;（責(zé)打人用的）棍棒;手槍; meknzm機制Valve mechanism英 vlv 美 vlv n閥; 真空管; （管樂器的）活栓; （心臟的）瓣膜;23單獨的，獨立的Single排氣系統(tǒng) Exhaust system潤滑系統(tǒng) Lubrica

9、tion system 點火系統(tǒng) Ignition system啟動系統(tǒng) Starting system冷卻系統(tǒng) Cooling system進氣系統(tǒng) Intake system24排氣系統(tǒng) Exhaus25需要記住的句子There are four basic components of the automobile : engine , chassis , body and electrical system .譯：汽車有四個基本組成部分，發(fā)動機， 底盤，車身和電氣系統(tǒng)。Engine system includes ： ignition system，lubrication system,

10、 cooling system, starting system.譯：發(fā)動機系統(tǒng)包括：點火系，潤滑系，冷卻系，起動系。25需要記住的句子There are four bas26布置任務(wù)將需要記住的單詞和句子記錄在筆記本上；將需要記住的單詞每個寫3遍，1遍漢語意思；26布置任務(wù)將需要記住的單詞和句子記錄在筆記本上；Pre-questionsThe heart of automobilePre-questionsThe heart of What impression of the engine?complicated powerPre-questionsWhat impression of th

11、e engine?What are there types of the engine?electric motors, steam engines, and internal combustion engines Whats the internal combustion engine? burns fuel within the cylinders and converts the expanding force of the combustion into rotary force used to propel the vehicle.Pre-questionsWhat are ther

12、e types of the enSingle-cylinder enginecylinderpistonPiston pinConnecting rodcrankshaftOil pipeIntake valveExhaust valve Timing gearOil pumpSingle-cylinder enginecylinderwhat is the power source of automobile and how to produce?piston piston pin connecting rod crankshaft EnginePower is produced by t

13、he linear motion of a piston in a cylinder. The connecting rod transmits the up-and-down motion of the piston to the crankshaft, which changes it into rotary motion. Pre-questionswhat is the power source of aThe engine comprises two mechanism and five systems, what are they ?crankshaft and connectin

14、g rod mechanism, valve gear, cooling system, lubricating system, fuel system, starting system, ignition system Pre-questionsThe engine comprises two mechaconnecting rodflywheelcrankshaftpistonintake valveexhaust valvepush rodtappettiming gears Valve gear Connecting rod connecting rodflywheelcranksha

15、Engine cooling systemEngine cooling systemEngine lubricating systemEngine lubricating systemFuel supply systemFuel supply systemValve gearValve gearWhats the function of the crankshaft and connecting rod mechanism? Its function is to convert heat energy into mechanical energy used to drive the vehic

16、les. Pre-questionsWhats the function of the craThe internal combustion engine, as its name indicates, burns fuel within the cylinders and converts the expanding force of the combustion into rotary force used to propel the vehicle.譯文：內(nèi)燃機，顧名思義，就是燃料在氣缸內(nèi)部燃燒，并且把燃燒時的膨脹力轉(zhuǎn)化為驅(qū)動車輛的旋轉(zhuǎn)力。II. Text ExplanationThe

17、internal combustion engineOf all automobile components, an automobile engine is the most complicated assembly with dominant effects on the function of an automobile. complicated kmplikeitid adj.復(fù)雜的, 難解的dominance dmnns n.優(yōu)勢, 統(tǒng)治譯文：汽車發(fā)動機是一切汽車部件中結(jié)構(gòu)最復(fù)雜，對汽車功能起支配作用的一個總成。II. Text ExplanationOf all automobil

18、e components, Its function is to convert heat energy into mechanical energy used to drive the vehicles.Convertinto. 轉(zhuǎn)變；變換譯文：它的作用就是將熱能轉(zhuǎn)換成機械能用來驅(qū)動汽車 。II. Text ExplanationIts function is to convert heaCo.轉(zhuǎn)變；變換That building has been converted into a school. 那座樓房改成學(xué)校了。兌換 I want to convert some H

19、ong Kong dollars into American dollars. 我想把一些港元換成美元。改變信仰、黨派或意見等 She managed to convert him to her opinion. 她終于設(shè)法說服了他接受她的意見。II. Text ExplanationCo.II. Text ExplPower is produced by the linear motion of a piston in a cylinder. linear lini adj. 線的, 直線的, 線 性的 piston pistn n.活塞II. Text Explanat

20、ionPower is produced by the lineaThe piston attached to the top of a connecting rod by a pin, called a piston pin or wrist pin. attach to v. 連接 connecting rod 連桿 piston pin = wrist pin 活塞銷II. Text ExplanationThe piston attached to the topThe connecting rod transmits the up-and-down motion of the pis

21、ton to the crankshaft, which changes it into rotary motion. transmitto 把傳到 which changes it into rotary motion 定語從句II. Text ExplanationThe connecting rod transmits tdiesel engineswater pumpthe ignition distributoroil pantiming gearcrankshaft and connecting rod mechanismvalve gearfuel systemexhaust p

22、ipeexhaust manifoldIII. ExercisesTranslate the following expressions into Chinese.柴油發(fā)動機水泵分電器油底殼正時齒輪曲柄連桿機構(gòu)配氣機構(gòu)燃油系統(tǒng)排氣管排氣歧管diesel enginesIII. ExercisesTr1-cylinder head cover 2-piston3-timing toothed belt4-water pump5-oil pan6-oil pump7-crankshaft8-flywheel9-distributor10-valveIII. Exercises1-cylinder

23、head cover III. ExeThe crankshaft represents the final link in the conversion of reciprocating motion at the piston to one of rotation at the flywheel. In the cast of the multi-cylinder engine, the crankshaft has to control the relative motions of the pistons, while receiving their own impulses. A o

24、ne-piece construction is most commonly used for the motor-vehicle crankshaft, which extends the whole length of the engine and must therefore possess considerable rigidity . III. ExercisesThe crankshaft represents the The timing-drive for the engine valve mechanism is taken from the front end of the

25、 crankshaft as is the pulley and belt drive for the engine auxiliaries, such as the cooling fan and the alternator for electrical system. attached to the rear end of the crankshaft is the engine flywheel .III. ExercisesThe timing-drive for the enginI. Translate the following sentences into Chinese.1

26、Engine is the power source of the automobile. Power is produced by the linear motion of a piston in a cylinder.發(fā)動機是汽車的動力源.它通過汽缸內(nèi)的活塞線性運動產(chǎn)生的.2The fuel system works according to the requirements of the engine as it provides an air-fuel mixture which must be in proportion to the speed and load placed on the engine.燃油系統(tǒng)的作用是根據(jù)發(fā)動機的轉(zhuǎn)速和負荷提供一定比例的可燃混合氣以滿足發(fā)動機的需求。III. ExercisesI. Translate the following sen3The valve gear provides timely admissi