Английский язык: Сборник текстов и упражнений для студентов специальности "Эксплуатация судовых энергетических установок". Писарева Л.П. - 55 стр.

6 engine which develops the same power. However the Japanese unit operates at a lower mean
piston speed of 8 m/s and a higher b.m.e.p. of 25 kg/cm2. The two- stage turbo- charging is car-
ried out by a primary BBC VTR 320 turbo- charger operating on the constant pressure principle
with the air passing to the LP inter-cooler at a pressure of 1,4kg/cm2. The secondary turbo-
charger is a BBC VTR 200 unit which operates on the pulse system. The temperature in the ex-
haust gas manifold is 4650C with the outlet at the primary turbine being 2800C.
       In order to keep the maximum combustion pressure as low as possible, a Miller system of
closing the inlet valves before bottom dead centre has been incorporated. This gives a maxi-
mum compression pressure of 130 kg/cm2. In order to improve starting an automatic inlet valve
timing control utilizing a hydraulic servo mechanism operated by air starting pressure has been
fitted to complement the Miller system. The inlet valve is therefore opened and closed in the
normal timing sequence during starting and running at no load and closed before bottom dead
centre on full load. During full power trials the six- cylinder engine developed 2500 bhp at
750 rev/min at a b.m.e.p. of 29,5 kg/cm2, a maximum combustion pressure of 145 kg/cm2 an
exhaust gas temperature of 4700C and a specific fuel consumption of 166 g/bhp/h.


                                  Words to be remembered

     bore                                          (зд.) диаметр
     stroke                                        ход поршня
     two- stage                                    вторая- ступенчатая
     carry out                                     выполнить
     B.m.e.p. - brake mean effective
     power-                                        средняя эффективная мощность
     LP- low pressure
     incorporate                                   устанавливать
     improve                                       совершенствовать
     timing control                                управление регулировкой клапанов
     servo mechanism                               следящая система непрерывного действия
     fit                                           оснащать
     specific fuel consumption                     удельный расход топлива


                                          Exercises

       I. Give Russian equivalents to.
       350 bhp/cyl; two- stage system; turbo- charger; the unit can be compared with; slightly
large bore; lower mean piston speed; mean effective power; primary; secondary; constant pres-
sure; low pressure inter cooler; pulse system; to keep maximum pressure; as low as possible; to
utilize hydraulic mechanism; sequence; to run at no load; full load; consumption.

     II. Translate into English.
     Ход поршня; турбо- наддув; двухступенчатая система; развивать такую же мощность;
постоянное (пульсирующее) давление; выхлопной коллектор; удержать; нижняя мертвая
точка; давление пускового воздуха; автоматическое управление; холостой ход; полная на-
грузка; ходовые испытания; удельный расход топлива; максимальное давление горения.
     III. Say in English.
     50 0C, 2500 bhp, 14,5 kg/cm2, 188g/bhp/h, b.m.e.p. of 25 kg/cm2, 300 bhp/cyl.

     IV. Answer the questions.
     1. What are the particulars of the engine?
     2. What country is it made in?
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