Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Методичка 3 курс механики новая.docx
Скачиваний:
1
Добавлен:
01.07.2025
Размер:
213 Кб
Скачать
☆
  1. Read and remember the words. Mind the pronunciation.

    crankshaft

    –

    коленчатый вал

    piston

    –

    поршень

    connecting rod

    –

    шатун

    camshaft

    –

    распределительный (кулачковый) вал

    spray valve

    –

    сопло распылителя

    flywheel

    –

    маховик

    trunk piston

    –

    тронковый поршень

    crosshead piston

    –

    крейцкопфный поршень

    forging

    –

    поковка

    iron casting

    –

    чугунная отливка

    alloy

    –

    сплав

    compression ring

    –

    компрессионное кольцо

    oil control ring

    –

    маслосъемное кольцо

    lubricating oil

    –

    смазочное масло

    forced lubrication

    –

    принудительная смазка

    fuel injection pump

    –

    топливный насос

    spent (exhaust) gases

    –

    выхлопные газы

    rotation

    –

    вращение

    gear drive

    –

    зубчатая передача

  2. Read and translate the text.

Crankshaft. The crankshaft is the most important and largest moving part. It is either a steel forging or an iron casting. The crankshaft is supported in the bedplate by main bearings. The crankshaft supplies power to the machinery the engine drives.

Pistons. Pistons may be divided into trunk and crosshead types. The trunk piston is used for small and the crosshead type for large engines.

The piston is provided with compression and oil control rings. Piston rings should possess sufficient elasticity to press uniformly against the cylinder walls.

Connecting rod. The connecting rod is made of steel. It connects the piston to the crank on the crankshaft and transmits the force in either direction from the piston to the crank on the crankshaft. With engines using forced lubrication the connecting rods are usually bored hollow for-the passage of lubricating oil.

Camshaft. The camshaft supported in bearings is driven from the crank­shaft by means of a gear drive. The function of the camshaft is to operate the fuel injection pump and valves.

Valves. The spray valve introduces fuel into the cylinder.

The intake valve admits the air into the cylinder. The exhaust valve dis­charges the spent gases out of the cylinder.

Flywheel. The function of the flywheel is to keep the shaft turning during the intervals between impulses and to keep the speed of rotation regular.

  1. Give Russian equivalents to the following words.

    sufficient

    поддерживать

    to transmit

    достаточный

    to connect

    приводить в действие

    to operate

    снабжать

    to turn

    упругость, эластичность

    speed

    вращать, поворачивать

    hollow

    скорость

    to support

    соединять

    to supply

    передавать

    elasticity

    полый

  2. Form nouns from the following verbs.

To use, to direct, to compress, to combust, to resist, to transmit, to supply, to press, to cover, to lubricate, to pass.

  1. Are these sentences true or false?

  1. The intake valve discharges the spent gases out of the cylinder.

  2. The piston is provided with compression and oil control rings.

  3. The function of the camshaft is to introduce fuel into the cylinder.

  4. With engines using forced lubrication the connecting rods are usually bored hollow for the passage of lubricating oil.

  5. The crankshaft supplies power to the machinery the engine drives.

  6. The piston is made of plastic.

  7. The trunk piston is used for large engines.

  8. The crankshaft is one of the most important fixed parts in a diesel engine.