b) make up as many words as you can by combining different parts of the words: re- inject -ment
dis- intern -al
multi- compress -age
link
-or
point -ion
place
Exercise 6. Divide the following terms into two groups, those which belong to a) spark-ignition engines; b) compression-ignition engines. Gasoline direct injection engines, homogeneous charge compression-ig-
nition engines, multipoint port fuel
injection engines, throttle body fuel injec-
tion engines, indirect injection
engines, carburetted engines, direct injection
engines.
Exercise 7. Think over the definitions of the terms which appear in the texts and dialogues and then: a) agree or disagree with the following definitions 1.
An internal combustion engine is an engine in which combustion of the
fuel takes place in a confined space, producing expanding gases that are used
directly to provide mechanical power.
2.
A four-stroke cycle engine is an engine which has two piston movements
over two engine revolutions for each cycle.
3.
A two-stroke cycle engine is an engine which has four piston movements
over one revolution for each cycle.
4.
A single-cylinderengine is an engine which has some cylinders and pis-
tons connected to the crankshaft.
5.
A reciprocating engine is an engine which has one or more cylinders in
which pistons reciprocate back and forth.
b) match each word with its correct definition rotary engine, radial engine, in-line engine, W-type engine, carburetted engine 1. This engine is made of a block (stator) built around a large non-concen-
tric rotor and crankshaft.
2.
Cylinders are positioned in a straight line, one behind the other along
the length of the crankshaft in this engine.
3. Pistons are positioned in a circular plane around a circular crankshaft
in this engine.
4. Air and fuel are mixed to facilitate the combustion process in this engine.
5. This is an engine of two different cylinder arrangements.
