專業(yè)英語-4汽車底盤(一)PPT優(yōu)秀課件

1、汽車實用英語,Automobile English,Task Three Automobile Chassis,Objectives 1. To know about the importance of the automobile chassis; 2. To learn the main parts of the automobile chassis; 3. To learn the function of the braking system, power train, steering system, and suspension system.,1,Part Warm upKnow

2、about automobile chassis,Part Warm upKnow about automobile chassis,1,Part Warm upKnow about automobile chassis,1,Part Warm upKnow about automobile chassis,Grasp the useful words and phrases pull to one side 跑偏 tire inflation 胎壓 tire wear 輪胎磨損,Part Listening and speaking,The four main systems of auto

3、mobile chassis are power train (or drive line)傳動系, steering system轉向系, braking system 制動系and suspension system懸掛.,Part ReadingPassage One Main structure of automobile chassis,Part ReadingPassage One Main structure of automobile chassisSteering system 轉向系統(tǒng),Part ReadingPassage One Main structure of au

4、tomobile chassisSteering system,The steering system is the means by which the driver of a vehicle is able to control the position of the front wheels. The system must provide ease of handling, good directional control, and stability.,Part ReadingPassage One Main structure of automobile chassisSteeri

5、ng system,There are two types of the steering system, manual steering system and power steering system. Power steering system includes hydraulic（液壓） power steering system, electric power steering (EPS) and electric hydraulic power steering system (EHPS).,Part ReadingPassage One Main structure of aut

6、omobile chassisSteering system,Type: Mechanical steering system 機械轉向系統(tǒng) Power steering system 助力轉向系統(tǒng) Hydraulic power steering system 液壓助力轉向系統(tǒng) Electronic control power steering (EPS) Electro-hydraulic power steering system (EHPS),Part ReadingPassage One Main structure of automobile chassisSteering sys

7、tem,The key components that make up the steering system are the steering wheel, steering column, steering shaft, steering gear, pitman arm（垂臂）, drag link（直拉桿）, steering arm（轉向節(jié)）, ball joints, and tie-rod assembly（橫拉桿）. Hydraulic power steering systems add a hydraulic pump, fluid reservoir, hoses, an

8、d either a power assist unit mounted on, or integral with a steering gear assembly.,Part ReadingPassage One Main structure of automobile chassisSteering system,Part ReadingPassage One Main structure of automobile chassisSuspension system懸掛系統(tǒng),Part ReadingPassage One Main structure of automobile chass

9、isSuspension system,Suspension system has the following functions: To keep cars wheels in firm contact with the road. To provide a comfortable ride for the passengers. To provide steering stability with good handling.,Part ReadingPassage One Main structure of automobile chassisSuspension system,Ther

10、e are three fundamental components of any suspension: the springs（彈簧）, shock absorbers（減震器） and anti-sway bar (connecting linkages)（橫向穩(wěn)定桿）. Without these parts, the comfort and ease of driving would be reduced.,Additional words: Independent suspension Dependent suspension Non-independent suspension,

11、Part ReadingPassage One Main structure of automobile chassisSuspension system,Coil spring（螺旋彈簧） Leaf spring（鋼板彈簧） Torsion bar （扭力桿） Air spring（空氣彈簧）,Part ReadingPassage One Main structure of automobile chassisSuspension system,Electronic control suspension system Active suspension system Semi-active

12、 suspension system Spring stiffness彈簧剛度,Part ReadingPassage One Main structure of automobile chassisSuspension system,Wheel alignment 四輪定位 Wheel camber （前輪外傾角） Kingpin Caster （主銷后傾角） Kingpin Inclination（主銷內傾角） Toe-in （前束）,Part ReadingPassage One Main structure of automobile chassisSuspension system,

13、Part ReadingPassage One Main structure of automobile chassisBraking system（制動系統(tǒng)）,Automobile brakes must be able to stop the car, prevent excess speed when coasting, and hold the vehicle in position when stopped on grades. Each vehicle must have two independent brake systems for safety. The main brak

14、e system is service brake system（主制動系統(tǒng)）. The secondary is parking brake system（駐車制動）.,Part ReadingPassage One Main structure of automobile chassisBraking system, brake pedal 制動踏板 master cylinder 制動總泵 brake line 制動油管 wheel cylinder 制動分泵 brake drum 制動鼓 brake lining 制動蹄片, brake shoe 制動蹄 brake shoe retu

15、rn spring 回位彈簧 wheel cylinder piston 車輪油缸活塞 master cylinder piston 主缸活塞 pushrod 推桿,Part ReadingPassage One Main structure of automobile chassisBraking system,Anti-lock Braking System,Part ReadingPassage One Main structure of automobile chassisBraking system,Part ReadingPassage One Main structure of

16、automobile chassisBraking system,The power train（傳動系） carries power from the engine crankshaft to the car wheels, so the wheels rotate and the car moves.,Part ReadingPassage Two Power train,Part ReadingPassage Two Power train,rear-wheel drive lines system,Part ReadingPassage Two Power train,Part Rea

17、dingPassage Two Power train,Angle drive,Universal drive,Drive axle,Go forward,transmission,clutch,engine,Engine RR drive bus sketch map,The clutch in an automotive vehicle provides a means of connecting and disconnecting the engine from the transmission, both starting up and during shifts.,Part Read

18、ingPassage Two Power trainClutch,The transmission provides a means of varying the relationship between the speed of the engine and the speed of the wheels. Manual transmission requires use of a clutch to remove the engine torque to the transmission input shaft.,Part ReadingPassage Two Power trainTra

19、nsmission,Additional words 可變速比 variable ratios有級變速 definite ratios無級變速 indefinite ratios分動器 transfer case, transfer box 無級變速器(CVT) Continuously Variable Transmission,Part ReadingPassage Two Power trainTransmission,膜片彈簧離合器 diaphragm spring clutch 四擋變速器 four-speed transmission 輸入軸（第一軸）input shaft 輸出軸

20、（第二軸）output shaft 中間軸 counter shaft倒擋軸 reverse gear shaft,Part ReadingPassage Two Power trainTransmission,常嚙合 constant mesh低速擋 low gear高速擋 high gear最高速擋 top gear 換擋 shift嚙合套 sliding sleeve同步器 synchronizer變速桿 shifting lever,Part ReadingPassage Two Power trainTransmission,空擋 neutral gear一擋 the first g

21、ear二擋 the second gear三擋 the third gear倒擋 reverse gear直接擋 direct gear超速擋 overdrive,Part ReadingPassage Two Power trainTransmission,In an automatic transmission, gear ratios are changed automatically. This eliminates the need for the driver to operate the clutch and manually “shift gears”.,Part Readin

22、gPassage Two Power trainAutomatic transmission,The typical automatic transmission consists of a fluid torque converter（液力變矩器）, a planetary-gear system（行星齒輪機構）, and a hydraulic control system（液壓控制系統(tǒng)）. In addition to the forward-gear ratios, neutral（空擋）, and reverse（倒檔）, the automatic transmission has

23、 a “park” position.,Part ReadingPassage Two Power trainAutomatic transmission,Part ReadingPassage Two Power trainAutomatic transmission,The drive shaft (propeller shaft) connects the transmission output shaft to the differential pinion shaft. The universal joint is used to connect the drive shaft to

24、 the transmission output shaft. U-joints allow the drive shaft to flex when the drive angle changes.,Part ReadingPassage Two Power trainDrive shaft,When the car begins to round a curve, the differential pinion gears rotate on the pinion shaft. This permits the outer wheel to turn faster than the inn

25、er wheel.,Part ReadingPassage Two Power trainDifferential,Part ReadingPassage Two Power trainDifferential,Each vehicle must have two independent brake systems for safety. The main brake system is _, The secondary is _.,service brake system,parking brake system,Part ReadingPassage Two Power trainExer

26、cises,The brake system is one of the most important safety systems on the _.,vehicle,Part ReadingPassage Two Power trainExercises,The _ in an automobile provides a means of connecting and disconnecting the engine from the transmission.,clutch,Part ReadingPassage Two Power trainExercises,Manual trans

27、mission requires use of a _ to remove the engine torque to the transmission input shaft.,clutch,Part ReadingPassage Two Power trainExercises,The steering gear multiplies steering _ and changes its direction as received through the steering shaft from the steering wheel.,torque,Part ReadingPassage Tw

28、o Power trainExercises,The steering system is the means by which the driver of a vehicle is able to control the position of the _.,front wheels,Part ReadingPassage Two Power trainExercises,The _ provides a means of varying the relationship between the speed of the engine and the speed of the wheels.

29、 A. clutch B. drive shaft C. tire D. transmission,Part ReadingPassage Two Power trainExercises,The _ allows you to connect and disconnect the engine and the transmission both starting up and during shifts. A. clutch B. flywheel C. brake shoe D. cab,Part ReadingPassage Two Power trainExercises,Automo

30、bile _ must be able to stop the car, prevent excess speed when coasting, and hold the vehicle in position when stopped on grades. A. brakes B. engine C. transmission D. clutch,Part ReadingPassage Two Power trainExercises,Hydraulic brake systems utilize _ to transfer force from the drivers foot to the brake shoes. A. air B. solid C. liquid D. linkage,Part ReadingPassage Two Power trainExercises,Answer the following questions. 1. What is the function of the power train?,To carry power from the engine to the wheels.,Part ReadingPassage Two Power trai