1. Two fire-fighting pumps to be tested will be driven by a 250-hp constant current motor.

2. To prevent the crankshaft from breakage it is necessary systematically to watch its condition and to carry out repair works in due time.

3. The capacity of this dredger is supposed to be greatly increased.

4. They are said to have completed assembling the engine.

5. The service fuel tank should be filled with fuel in due time to allow the fuel to settle.

6. The engineers consider those new engines to be particularly suitable for ferries. Unit 10

1. Read and remember the words.

shop trials	–	цеховые испытания
benefits	–	преимущества
turbine rotor	–	ротор турбины
ship’s network	–	судовая распределительная сеть
to boost	–	повышать, нагнетать, ускорять
main engine shaft	–	коренной вал двигателя
unit	–	установка, агрегат
to arrange	–	располагать, монтировать
silencer	–	глушитель
to couple	–	соединять (в пары) сцеплять
steady	–	устойчивый, стационарный
fuel saving	–	экономия топлива
electric current	–	электрический ток
turbocharger efficiency	–	КПД турбонагнетателя

2. Guess the meaning of the following international words, read and learn them.

Transmission, efficiency, to demonstrate, to realize, efficiency level, pro­ducing electricity, generator, to test, electric motor, starting.

3. Read and translate the text.

Turbocharger Generator Boosts Efficiency

Shop trials on the Man - B&W 6L70 MCE engine have been used to dem­onstrate the benefits of higher turbocharger efficiency.

With a standard turbocharger fitted to the 6L70 MCE, an efficiency of 65% was reached. The engine’s turbocharger was then equipped with a different compressor and a turbine rotor, and the turbocharger efficiency of over 68% was achieved.

At such efficiency levels, more exhaust gas energy is delivered than needed to compress air for optimal combustion in the engine. That leaves exhaust gas energy available for such purposes as producing electricity for the ship’s net­work or for transmission to the main engine shaft. In the 6L70 MCE trials, a new turbocharger generator unit developed by Siemens and MAN - B&W Die­sel was successfully tested.

In this unit, an electric motor/generator arranged in the turbocharger si­lencer is steady coupled to the turbocharger rotor shaft.

Instead of the auxiliary blowers, the electric motor is used for starting and part load operations. Above 60 % power, it operates as a generator and delivers energy to the main engine shaft or electrical current to the ship’s network.

With this system, fuel savings of up to 4 g/kWh are possible.

4. Match the following English and Russian words.

   	ship’s network		подавать энергию
   	turbocharger silencer		выработка электричества
   	turbocharger rotor shaft		вал ротора турбонагнетателя
   	electrical current		коренной вал двигателя
   	shop trials		вспомогательный нагнетатель
   	producing electricity		глушитель турбонагнетателя
   	auxiliary blower		электрический ток
   	to deliver energy		цеховые испытания
   	main engine shaft		судовая распределительная сеть

5. Give English equivalents.

Преимущества, запуск, оборудовать, энергия выхлопного газа, выра­батывать, сгорание, передача, созданный, использовать, установленный, повышать, установка (агрегат), КПД турбонагнетателя, располагать (мон­тировать), получать (реализовывать), достигать, цель, соединять, работа при частичной нагрузке, стационарный.

6. Insert prepositions.

1. ……. the auxiliary blowers the electric motor is used ……. starting.

2. A new turbocharger generator unit is developed ……. Siemens.

3. A turbocharger efficiency ……. 68% was achieved.

4. The turbocharger was then equipped ……. a different compressor.

5. Shop trials ……. the engine showed its benefits.

6. An efficiency ……. 65% was reached.

7. Translate into English.

1. Стандартный турбонагнетатель, установленный на двигателе, имеет КПД 65%.

2. Был получен КПД турбонагнетателя более 68%.

3. Новый генератор, созданный компанией Сименс, был успешно ис­пытан.

4. Энергия выхлопных газов подается, чтобы сжать воздух для опти­мального сгорания.

5. Электрический мотор/генератор установлен в глушителе турбонаг­нетателя.

8. Translate the sentences paying attention to Participles, Gerunds and Infinitives.

1. After starting the engine the engineer checked up oil pressure.

2. When stopping the engine in cold weather, drain the cooler completely.

3. Having installed powerful dredging pumps, they increased the capacity of the dredger.

4. The lubricating oil pumps have a capacity of 225 m³ one of them be­ing a standby.

5. The engine having been adjusted they put it into operation.

6. We heard of this engine being very powerful.

7. The cooling system is used to cool the scavenging air.

8. The oil leaving the pistons passed into a large tank.

9. While repairing the pumping system the mechanic met with many difficulties.

10. They consider this type of engines very reliable.

11. It is necessary to maintain a desired temperature in the engine room.

12. A turbocharger is known to be the essential part of the supercharging system.

13. The pump engine to be installed in this dredger is a V-type machine.

14. The safety valve is used to relieve (low) pressure in the air bottle.

15. To cool the cylinder under conditions of high b.m.e.p. and outputs, a collar (воротник) at the upper part of the liner is bore-cooled.

9. Answer the questions.

1. What did the shop trials demonstrate?

2. What turbocharger was fitted to the engine?

3. What efficiency was reached?

4. What was the engine’s turbocharger then equipped with? What turbo­charger efficiency was achieved?

5. What happens at such efficiency levels?

6. What is used for producing electricity?

7. What was successfully tested in the trials?

8. What is steady coupled to the turbocharger rotor shaft?

9. What is electric motor used for?

10. What fuel savings are possible with this system?

10. Give the summary of the text using the questions from exercise 9 as a plan.