2. Read and translate the text. Components of the automobile

Automobiles are lorries, self-propelled vehicles for land transportation of people or goods, or for moving materials. There are three types of automobiles. These are passenger cars, buses and lorries. The automobile consists of the following components: a) the engine; b) the frame work; c) the mechanism that transmits the power from engine to the wheels; d) the body.

Passenger cars are, as a rule, propelled by an internal-combustion engine. They are distinguished by the horsepower of the engine, the number of cylinders in the engine and the type of the body, the type of transmission, wheelbase, weight and overall length.

There are engines of various designs. They differ in the number of cylinders, their position, their operating cycle, valve mechanism, and cooling system.

Most automobile engines have six or eight cylinders, although some four-, twelve-, and sixteen-cylinder engines are used. The activities that take place in the engine cylinder can be divided into four stages which are called strokes. The four strokes are: intake, compression, power and exhaust. The upper limit of piston movement is called top dead center, TDC. The lower limit of piston movement is called bottom dead center, BDC. A stroke constitutes piston movement from TDC to BDC, or from BDC to TDC. In other words, the piston completes a stroke each time it changes the direction of motion.

3. Fill in the following space with the appropriate word or phrase.

1. There are … types of automobiles. 2. Passenger cars are distinguished by … . 3. Top dead center is … . 4. The low limit of piston movement is called … . 5. Each time the piston changes direction of motion … .

4. Are the following statements true or false? Explain your answers.

1. Cars, buses and lorries are three types of automobiles. 2. Passenger cars are, as a rule, propelled by steam-powered engine. 3. Automobile engines have from six up to sixteen cylinders. 4. The lower limit of piston movement is called TDC. 5. The piston completes a cycle each time it changes the direction of motion.

5. Answer the following questions.

1. What are the functions of the automobile? 2. List the main components of an automobile? 3. There are engines of different design. What do they differ in? 4. Describe the passenger car. 5. What activities take place in the engine cylinder?

Mini test 7 (Unit 7)

1. Translate the words.

1. self-propelled vehicle. 2. internal combustion engine. 3. horsepower of the engine. 4. number of cylinders. 5. operating cycle. 6. cooling system. 7. upper limit of piston movement. 8. bottom dead center. 9. complete a stroke. 10. change the direction of a motion.

2. Find definitions to the given words.

1. Passenger car. 2. Power. 3. Lorry. 4. Compression. 5. Exhaust.

A. Energy of force that can be used to do work. B. Outlet in the engine for gas that has done its work. C. Automobile for transportation of people. D. Stroke during which a fuel mixture is compressed. E. Long open-motor vehicle for carrying goods by a road.

3. Fill in the gaps.

1. Automobiles are … vehicles for land transportation of people or goods. 2. A passenger car is propelled by an … . 3. Engines may differ in … of cylinders. 4. The lower limit of piston movement is called … . 5. The upper limit of piston movement is called … .

A. internal combustion engine. B. self-propelled. C. bottom dead center. D. top dead center. E. the number.

4. Match the synonyms.

1. Goods. 2. Differ. 3. Operate. 4. Constitute. 5. Operation.

A. Distinguish. B. Materials. C. Work. D. Complete. E. Activity.

5. Match the antonyms.

1. TDC. 2. Lower limit. 3. Self- propelled. 4. Different. 5. Work.

A. Upper limit. B. Horse-driven. C. Idle. D. BDC. E. Similar.

6. Name the component parts of the vehicle.

1. … is the mechanical device for controlling the flow of air, liquid gas in one direction only. 2. … is a shaped chamber in an engine in which gas forces a piston. 3. … is the machine that generates mechanical power. 4. … is the means by which the motor-vehicle is supported on its axles. 5. … is the part of an engine that moves up and down to create power.

7. Translate the 3^d and 4^th paragraphs of the text.