Английский язык. Писарева Л.П. - 12 стр.

5. Where is the camshaft drive situated ?

                                       ВАРИАНТ III

Akasaka 8 U 50 Engine.
     The engine is built to operate at such a speed that it doesn't require to be coupled to
a reduction gearbox. The Akasaka 8U50 engine is a trunk piston medium- speed unit
which is produced in eight in- line cylinders and develops its rating of 813
b.h.p./cylinder at 340 rev/min. This machine is a development of Akasaka's earlier
6U50 machine which, though of less cylinders, was rated at 917 bhp/cylinder at 340
rev/min.
   The Akasaka 8U50 engine is a four- stroke machine with two inlet and two exhaust
valves which are actuated by rockers. The machine operates on low- grade heavy fuel
and, because of that, the exhaust valve seats are arranged for fresh water cooling. The
pistons are of the built- up type with an alloy steel crown and cast iron skirt; cooling is
by system lubricating oil. The entire construction of the engine including the bed plate,
cylinder block and cylinder covers, is of cast iron. The bed plate is cast in two pieces
and clamped together by horizontal stay bolts at the centre of No, 6 cylinder. The
crankshaft is of the solid type, balance weights are fitted on each crank web. It is a
turbo chargers are mounted one on either end of the engine.
Words and expressions to be remembered:

To require                                          требовать
Be coupled                                          соединять
Reduction gearbox                                   редуктор
Medium speed engine                                 средне -оборотистый
Engine rating                                       мощность двигателя
Low (high) grade fuel                               низко (высоко) сортное топливо
Build- up                                           составной
Include                                             включать
Bed plate                                           станина, фундаментальная плита
Clamp                                               закреплять
Stay bolt                                           анкерный болт
Solid                                               цельный
Balance weight                                      противовес
Crank web                                           плечо
Either and                                          любой


                                        Exercises
I Translate the English phrases:

To operate at a speed of, is not coupled to, a trunk piston engine; tto develop its rating
of, entire construction, build up type; high grade fuel, low grade fuel, acuated by


                                            12