汽車專業(yè)英語(yǔ)發(fā)動(dòng)機(jī)市公開課一等獎(jiǎng)省名師優(yōu)質(zhì)課賽課一等獎(jiǎng)?wù)n件

Unit2-1

MainComponentsofEngine

2一、發(fā)動(dòng)機(jī)分類Clissifiedbyfuel（按燃料不一樣分類）···汽油機(jī)和柴油機(jī)；Clissfiledbyworkingprogress（按工作行程分類）···四沖程發(fā)動(dòng)機(jī)和二沖程發(fā)動(dòng)機(jī)；Clissfiledbycooledways（按冷卻方式分類）···水冷發(fā)動(dòng)機(jī)和風(fēng)冷發(fā)動(dòng)機(jī)；Clissfiledbynumberofcylinder（按氣缸數(shù)量分類）···單缸發(fā)動(dòng)機(jī)和多缸發(fā)動(dòng)機(jī)3Clissifiedbyfuel（按燃料不一樣分類）汽油發(fā)動(dòng)機(jī)gasolineenginegasoline['g?s?li?n]

n.汽油點(diǎn)燃方式（點(diǎn)燃式）4柴油發(fā)動(dòng)機(jī)dieselenginediesel[‘di:z?l]

n.柴油，柴油機(jī)點(diǎn)燃方式（壓燃式）5Clissfiledbyworkingprogress

（按工作行程分類）二沖程發(fā)動(dòng)機(jī)Two

strokeenginestroke[str??k]

n.沖程，行程；活塞重復(fù)運(yùn)動(dòng)一次，曲軸轉(zhuǎn)動(dòng)一周，兩個(gè)沖程完成一個(gè)工作循環(huán)。6四沖程發(fā)動(dòng)機(jī)Fourstrokeenginestroke[str??k]

n.沖程，行程；活塞重復(fù)運(yùn)動(dòng)兩次，曲軸轉(zhuǎn)動(dòng)兩周，四個(gè)沖程完成一個(gè)工作循環(huán)。7水冷卻式發(fā)動(dòng)機(jī)Watercoolestengine水箱，經(jīng)過(guò)水泵作用，水經(jīng)過(guò)水道流通整個(gè)汽缸體，進(jìn)行降溫。8風(fēng)冷卻式發(fā)動(dòng)機(jī)aircoolestengine風(fēng)冷，經(jīng)過(guò)空氣氣流與風(fēng)扇作用，空氣/風(fēng)經(jīng)過(guò)發(fā)動(dòng)機(jī)整個(gè)汽缸體，進(jìn)行降溫。9Clissfiledbynumberofcylinder（按氣缸數(shù)量分類）單缸發(fā)動(dòng)機(jī)Singlecylinderenginecylinder['s?l?nd?]

n.氣缸我只有一個(gè)氣缸，一組氣門；10多缸發(fā)動(dòng)機(jī)Multicylinderenginecylinder['s?l?nd?]

n.氣缸我有多個(gè)氣缸，多組氣門；11二、發(fā)動(dòng)機(jī)基本組成12汽油機(jī)包含幾大系統(tǒng)？冷卻系coolingsystem潤(rùn)滑系lubricationsystem

[?lu:br?'ke??n]潤(rùn)滑，加油;油潤(rùn);起動(dòng)系startingsystem點(diǎn)火系Ignitionsystem

[?g?n??n]燃油供給系fuelsupplysystem進(jìn)氣系統(tǒng)intakesystem排氣系統(tǒng)exhaustsystem[?g?z?:st]1314Coolingsystem(冷卻系統(tǒng))Startingsystem

(起動(dòng)系統(tǒng))15Lubricationsystem

(潤(rùn)滑系統(tǒng))Ignitionsystem

(點(diǎn)火系統(tǒng))16Fuelsupplysystem

(燃油供給系統(tǒng))intakesystem

(進(jìn)氣系統(tǒng))17例句分析：Enginesystemincludes：____________、_______________、________________、_______________.

漢字：includevt.包含，包含；譯文：發(fā)動(dòng)機(jī)系統(tǒng)包含：____________、

____________、_____________、

____________。

ignitionsystemstartingsystemlubricationsystemcoolingsystem點(diǎn)火系統(tǒng)起動(dòng)系統(tǒng)潤(rùn)滑系統(tǒng)冷卻系統(tǒng)18汽油機(jī)包含哪兩大機(jī)構(gòu)？Crank-connectingrodmechanism曲柄連桿機(jī)構(gòu)19配氣機(jī)構(gòu)Valvemechanism氣門機(jī)構(gòu)20Intake進(jìn)氣

Compression壓縮Exhaust排放Power做功Stroke./str?uk/n.打擊；中風(fēng)；筆畫；沖程；嘗試；輕撫三、發(fā)動(dòng)機(jī)四大工作行程21四、發(fā)動(dòng)機(jī)布置形式發(fā)動(dòng)機(jī)前置前輪驅(qū)動(dòng)發(fā)動(dòng)機(jī)前置后輪驅(qū)動(dòng)發(fā)動(dòng)機(jī)后置后輪驅(qū)動(dòng)22課堂小結(jié)需要記住單詞：發(fā)動(dòng)機(jī)底盤車身電器系統(tǒng)汽油柴油沖程EngineChassisBodyElectricalsystemGasolineDieselstroke23單獨(dú)，獨(dú)立氣缸曲柄連桿機(jī)構(gòu)配氣機(jī)構(gòu)SinglecylinderCrank-connectingrodmechanism[kr??k]

n.

[機(jī)]曲柄;

妙語(yǔ)，奇想[r?d]

n.

桿，拉桿;

處罰，體罰;

（責(zé)打人用）棍棒;

手槍;

[?mek?n?z?m]

機(jī)制

Valvemechanism英[v?lv]美[v?lv]n閥;真空管;（管樂(lè)器）活栓;（心臟）瓣膜;排氣系統(tǒng)Exhaustsystem潤(rùn)滑系統(tǒng)Lubricationsystem

點(diǎn)火系統(tǒng)Ignitionsystem開啟系統(tǒng)

Startingsystem冷卻系統(tǒng)Coolingsystem進(jìn)氣系統(tǒng)Intakesystem2425需要記住句子Therearefourbasiccomponentsoftheautomobile:engine,chassis,bodyandelectricalsystem.譯：汽車有四個(gè)基本組成部分，發(fā)動(dòng)機(jī)，底盤，車身和電氣系統(tǒng)。Enginesystemincludes：ignitionsystem，lubricationsystem,coolingsystem,startingsystem.譯：發(fā)動(dòng)機(jī)系統(tǒng)包含：點(diǎn)火系，潤(rùn)滑系，冷卻系，起動(dòng)系。26布置任務(wù)將需要記住單詞和句子統(tǒng)計(jì)在筆記本上；將需要記住單詞每個(gè)寫3遍，1遍漢語(yǔ)意思；Pre-questionsTheheartofautomobileWhatimpressionoftheengine?complicatedpowerPre-questionsWhataretheretypesoftheengine?electricmotors,steamengines,andinternalcombustionenginesWhat’stheinternalcombustionengine?

burnsfuelwithinthecylindersandconvertstheexpandingforceofthecombustionintorotaryforceusedtopropelthevehicle.Pre-questionsSingle-cylinderenginecylinderpistonPistonpinConnectingrodcrankshaftOilpipeIntakevalveExhaustvalveTiminggearOilpumpwhatisthepowersourceofautomobileandhowtoproduce?pistonpistonpinconnectingrodcrankshaftEnginePowerisproducedbythelinearmotionofapistoninacylinder.

Theconnectingrodtransmitstheup-and-downmotionofthepistontothecrankshaft,whichchangesitintorotarymotion.

Pre-questionsTheenginecomprisestwomechanismandfivesystems,whatarethey?crankshaftandconnectingrodmechanism,valvegear,coolingsystem,lubricatingsystem,fuelsystem,startingsystem,ignitionsystemPre-questionsconnectingrodflywheelcrankshaftpistonintakevalveexhaustvalvepushrodtappettiminggears■

Valvegear

■

Connectingrod

EnginecoolingsystemEnginelubricatingsystemFuelsupplysystemValvegearWhat’sthefunctionofthecrankshaftandconnectingrodmechanism?

Itsfunctionistoconvertheatenergyintomechanicalenergyusedtodrivethevehicles.

Pre-questionsTheinternalcombustionengine,asitsnameindicates,burnsfuelwithinthecylindersandconvertstheexpandingforceofthecombustionintorotaryforceusedtopropelthevehicle.譯文：內(nèi)燃機(jī)，顧名思義，就是燃料在氣缸內(nèi)部燃燒，而且把燃燒時(shí)膨脹力轉(zhuǎn)化為驅(qū)動(dòng)車輛旋轉(zhuǎn)力。II.TextExplanationOfallautomobilecomponents,plicated[kmplikeitid]adj.復(fù)雜,難解dominance[dmnns]n.優(yōu)勢(shì),統(tǒng)治譯文：汽車發(fā)動(dòng)機(jī)是一切汽車部件中結(jié)構(gòu)最復(fù)雜，對(duì)汽車功效起支配作用一個(gè)總成。II.TextExplanationItsfunctionistoconvertheatenergyintomechanicalenergyusedtodrivethevehicles.Convert……into…..

轉(zhuǎn)變；變換譯文：它作用就是將熱能轉(zhuǎn)換成機(jī)械能用來(lái)驅(qū)動(dòng)汽車。II.TextExplanationConvert…..into….①轉(zhuǎn)變；變換Thatbuildinghasbeenconvertedintoaschool.那座樓房改成學(xué)校了。②兌換IwanttoconvertsomeHongKongdollarsintoAmericandollars.我想把一些港元換成美元。③改變信仰、黨派或意見等Shemanagedtoconverthimtoheropinion.她終于設(shè)法說(shuō)服了他接收她意見。II.TextExplanationPowerisproducedbythelinearmotionofapistoninacylinder.

linear[

lini]adj.線,直線,線性

piston[pistn]

n.活塞II.TextExplanationThepistonattachedtothetopofaconnectingrodbyapin,calledapistonpinorwristpin.

attachtov.連接connectingrod連桿

pistonpin=wristpin活塞銷

II.TextExplanationTheconnectingrodtransmitstheup-and-downmotionofthepistontothecrankshaft,whichchangesitintorotarymotion.transmit…to…

把…傳到…whichchangesitintorotarymotion

定語(yǔ)從句II.TextExplanationdieselengineswaterpumptheignitiondistributoroilpantiminggearcrankshaftandconnectingrodmechanismvalvegearfuelsystemexhaustpipeexhaustmanifoldIII.ExercisesTranslatethefollowingexpressionsintoChinese.柴油發(fā)動(dòng)機(jī)水泵分電器油底殼正時(shí)齒輪曲柄連桿機(jī)構(gòu)配氣機(jī)構(gòu)燃油系統(tǒng)排氣管排氣歧管1-cylinderheadcover2-piston3-timingtoothedbelt4-waterpump5-oilpan6-oilpump7-crankshaft8-flywheel9-distributor10-valveIII.ExercisesThecrankshaftrepresentsthefinallink

intheconversionofreciprocatingmotionatthepistontooneofrotationattheflywheel.Inthecastofthemulti-cylinder

engine,thecrankshafthastocontrol

therelativemotionsofthepistons,whilereceivingtheirownimpulses.Aone-piececonstructionismostcommonly

usedforthemotor-vehiclecrankshaft,whichextendsthewholelengthoftheengineandmustthereforepossessconsiderablerigidity.III.ExercisesThetiming-drivefortheenginevalvemechanismistakenfromthefrontendofthecrankshaft

asisthepulleyandbeltdrivefortheengineauxiliaries,suchasthecoolingfanandthealternatorforelectricalsystem.attachedtotherearendofthecrankshaftistheengineflywheel.III.ExercisesI.TranslatethefollowingsentencesintoChinese.1．Engineisthepowersourceoftheautomobile.Powerisproducedbythelinearmotionofapistoninacylinder.發(fā)動(dòng)機(jī)是汽車動(dòng)力源.它經(jīng)過(guò)汽缸內(nèi)活塞線性運(yùn)動(dòng)產(chǎn)生.2．Thefuelsystemworksaccordingtotherequirementsoftheengineasitprovidesanair-fuelmixturewhichmustbeinproportiontothespeedandloadplacedontheengine.燃油系統(tǒng)作用是依據(jù)發(fā)動(dòng)機(jī)轉(zhuǎn)速和負(fù)荷提供一定百分比可燃混合氣以