《汽车专业英语》期末试卷附答案第1套
performance directly affects the car's power, economy, reliability, safety, comfort and emissions.
3、In addition, the car body is the shell of the whole car, which can reflect the characteristics of the car's appearance image most intuitively, which determines that the modern car body design pays great attention to the external shape to meet the aesthetic requirements of the car shape, and better develop a car market.
4、A double overhead cam engine has two cams per head. So in-line engines have two cams, and V-type engines have four.
5、所以冷却系统的另一个重要作用是让发动机尽快的升温，并保持在稳定的温度范围内。
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三、Answer the following questions in English. (3×5’)
1、Why do we need the cooling system in an IEC（内燃机）?
2、What is the function of the braking system?
3、What’s the displacement of an engine?
四、Choose the right answer. (10×2’)
1. What do almost all cars use to convert gasoline into motion?
A. one-stroke combustion cycle
B. two-stroke combustion cycle
C. three-stroke combustion cycle
D. four-stroke combustion cycle
2. A car engine’s job is to .
A. convert fuel into heart
B. convert fuel into motion
C. convert fuel into exhaust
3. A car uses a four-stroke engine. The four strokes are .
A. intake, compression, ignition and exhaust
B. injection, rotation, ignition and exhaust
C. injection, carburetion, rotation and exhaust
4. With the at the bottom of the cylinder, the exhaust valve opens to allow the
burned exhaust gas to be expelled to the exhaust system.
A. piston
B. valve
C. camshaft
D.crankshaft
5. According to the method of ignition of the air-fuel mixture, engines are divided into .
A. gas engine and steam engine
B. gasoline engine and diesel engine
C. external combustion engine and compression ignition engine
D. internal combustion engine and diesel engine
6. What is the core of a car’s engine?
A. The cylinder
B. The spark plug
C. Windshield-washer fluid
D.Exhaust
7. Which statement about cylinder head is fault?
A. The cylinder head is bolted to a very flat surface above the cylinder portion of the block.
B. The cylinder head is cast into one piece from iron only.
C. The cylinder head forms the upper portion of the combustion chamber.
D. The cylinder head is used to hold the valves, and it has ports to allow air, fuel and exhaust to move through the engine.
8. The crankshaft and connecting rod converts energy into energy used to drive the vehicle.
A. thermal, mechanical
B. mechanical, thermal
C. kinetic, mechanical
D. mechanical, kinetic
9. What causes a car to burn and lose oil?
A. Lack of gas
B. Radiator trouble
C. A failing exhaust system
D. An old engine with piston rings that no longer seal the cylinder and piston properly.
10. What is the heart of the lubrication system, which is located in the oil pan on the
bottom of the engine? And it pulls oil up from the oil pan and makes the engine oil circulate through the engine.
A. Screened intake
B. oil filter
C. oil pump
D.oil pressure relief valve
五、Write a short passage to describe（描述）the principle of
the gasoline direct injection system within 300 words . (1×25’)
《汽车专业英语》答案
一、1、汽车2、性能，容量3、碰撞，冲突4、扭矩
5、节温器
6、风扇
7、方向盘
8、双凸轮轴顶置
9、cylinder 10、PCV
二、1、制动系使行驶中的汽车减速甚至停车，使下坡行驶的汽车的速度保持稳定，以及使已停驶的汽车保持不动，这些作用统称为汽车制动。
2、汽车电气系统是汽车的重要组成部分之一，其性能好坏直接影响汽车的动力性、经济性、可靠性，安全性、舒适性以及排放等性能。
3、此外，轿车车身又是包容整车的壳体，能够最直观地反映轿车外观形象的特点，从而决定了现代轿车车身设计非常注重外部造型以符合人们对轿车外形的审美要求，更好的开创轿车市场。
4、双凸轮轴顶置式发动机每个气缸盖有两个凸轮，所以直列式共有2个凸轮，V型有4个凸轮。
5、So another important job is to make the engine warm up as quick as possible and keep it in a constant temperature.
三、1、To keep the engine in a constant temperature.
2、The function of the brake system is to slow down or bring to rest a moving
vehicle in a shortest possible distance, or to hold the vehicle stationary if already halted.
3、Displacement= N*S*πr2
四、1-5、DBAAB 6-10、ABADC
五、略