《汽车英语三unit 课件》由会员分享，可在线阅读，更多相关《汽车英语三unit 课件（46页珍藏版）》请在金锄头文库上搜索。
1、,Steering System,Unit 4,2,Steering System,3,Section I Listen and Speaking,Task 1: Picture recognition Task 2: Read and Match Task 3: Speak Out Task 4: Listen and practice Task 5: Act out,4,Picture recognition. In this part, you will hear 5 statements, please judge which part is mentioned in each sta
2、tement.,A,B,D,E,F,B,C,A,E,D,Picture 2,A,B,C,D,E,5,Read and match. Read the structure and make a match.,A-Fluid Lines,B-Rack,C-Piston,D-Rotary Valve,E-Steering Column,F-Pinion,A,B,C,D,E,F,6,Speak out. Look at the structure in Task1 and Task2, ask your partner the following questions, and organize the
3、 sentences.,Are you familiar with the structure listed in task 1 and task 2? Whats the function of steering system? How many kinds of steering systems do you know?,7,Listen and practice. Listen to the dialogues, fill in the missing information, and practice them with your partner.,Dialogue 1,Mary: W
4、hat does steering system mean? David: It _of steering wheel, gears, linkages and other _. Mary: Oh, I see. They are used to control the direction of a vehicles_, arent they? David: Yes. Nowadays, many cars use a power-steering system. Mary: I have _there are two types of power steering systems. Davi
5、d: Yeah. They are hydraulic and _ power steering systems. Mary: Its really_. Im almost confused with it.,consists,components,motion,heard,electric,complex,8,Listen and practice. Listen to the dialogues, fill in the missing information, and practice them with your partner.,Dialogue 2,Mary: This car i
6、s very expensive. David: Of course. It is a car with _steering. Mary: Is it better than _steering? David: Yeah. it improves steering _and increases _stability while maneuvering at high_. Mary: Can it improve the stability of the car even through the turn? David: Yes. Im looking forward to _a car of
7、this kind. Mary: So am I.,four-wheel,front-wheel,response,vehicle,speed,owning,9,Take Task 4 as example, practice dialogues according to the situations provided with your partner.,1,Joe and Jack are talking about the development of steering systems, even they are discussing about the future of power
8、 steering.,2,David and Jack are watching the components of a hydraulic power steering system, and discussing about how they work.,10,Section II Reading,Reading A,Reading B,11,Reading A,Task 1,Task 2,12,12,Reading A,Task 1 Listen to the passage and fill in the missing information.,Power steering As v
9、ehicles have become heavier and _to front wheel drive, the effort to turn the steering wheel _has increased - often to the point where major physical exertion is required. To alleviate this, auto makers have developed power steering systems. There are two types of power steering systemshydraulic and
10、 electric/electronic. A hydraulic-electric hybrid system is also possible. A hydraulic power steering (HPS) uses hydraulic _supplied by an engine-driven pump to assist the motion of turning the steering wheel. Electric power steering (EPS) is more _than the hydraulic power steering, since the electr
11、ic power steering motor only needs to provide _when the steering wheel is turned, whereas the hydraulic pump must run constantly. In EPS the assist level is easily tunable to the vehicle type, road speed, and even driver_. An added benefit is the elimination of environmental hazard posed by leakage
12、and disposal of hydraulic power steering fluid.,switched,manually,pressure,efficient,assistance,preference,13,Reading A,1. According to the passage, which item can explain the word “alleviate” in the first paragraph? A. to make more bearable B. get rid of C. increase D. improve,2. Why do auto makers
13、 take efforts to develop power steering system? A. Vehicles have become heavier. B. Vehicles have switched to front wheel drive. C. Turning the steering wheel requires major physical exertion. D. All the above.,A,D,14,Reading A,3. Which of the following does not belong to the advantages of EPS? A. I
14、t is more efficient than the hydraulic power steering. B. It only needs to provide assistance when the steering wheel is turned. C. An engine-driven pump supplies pressure to assist the motion. D. In EPS the assist level is easily tunable.,4. Which of the following is NOT true? A. Power steering sys
15、tem helps to alleviate the effort to turn the steering wheel. B. Hydraulic-electric hybrid system is one of the existing steering system nowadays. C. Electric power steering is more efficient than the hydraulic power steering. D. In EPS the assist level is easily tunable to the vehicle type, road sp
16、eed, and even driver preference.,C,B,15,16,Reading B Steering System,The purpose of the steering system is guiding the car where the driver wants it to go. It must deliver precise directional control, and it must do so requiring little driver effort at the steering wheel. It consists of steering wheel, steering
