Publicidad
Idiomas disponibles
Idiomas disponibles
ENGINE GENERAL DESCRIPTION
Engines of model MR500 have been designed and built
to be installed in vessels as inboard engines.
The engines are used to equip offshore vessels for
recreational use.
MAIN COMPONENTS
A) Cooler: It cools down the coolant and the reversing
gear oil through a heat exchange with seawater.
B) Cooler: It cools down the fuel through a heat exchan-
ge with seawater.
C) Cooler: It cools down the engine oil through a heat
exchange with seawater.
D) Turbo device: Made up of a turbine which exploits a
part of the exhaust gas energy to carry out the engine
turbocharging. MR504LH3 and LX3 engine models are
equipped with a Variable-Geometry Turbocharger
(VGT).
E) Intercooler: It cools down the air needed for engine
turbocharging through a heat exchange with seawater.
F) "waste-gate" valve: It controls the turbo device activa-
tion, depending on the pressure of the exhaust gases.
G) Wet exhaust gas sleeve: It cools down the exhaust
gases through a heat exchange with seawater.
H) Air intake filter: It traps any impurity
J) Heat expansion valve: It adjusts the water temperatu-
re according to the engine working temperature
K) Electrolytic zinc: It absorbs the galvanic currents
L) Fuel filter: It traps any impurity
L1) Oil filter: It traps any impurity
M) Oil sump: It contains the engine lubrication oil
N) Electronic control unit: It controls the engine functions
P) Water pump: It feeds the freshwater cooling circuit
English
TECHNICAL INFORMATION
The engines differ from each other in terms of power
and performance (See "Specifications").
A few accessories are supplied with the engine (See
"Standard components").
Q) Water pump: It feeds the seawater cooling circuit
R) High pressure injection pump: It feeds the injectors
with fuel under pressure
S) Injector: injects fuel under pressure into the combu-
stion chamber.
S1) Rail: stores pressurised fuel and distributes it to the
injectors.
T) Transmission belt: It drives the service parts
T1) Belt tensioner: It keeps the belt constantly tensioned
U) Expansion chamber plug: It is used to refill the coo-
lant. It is fitted with an overpressure valve set to 1,2 bars
to drain any residual pressure.
V) Alternating current generator: It produces and regula-
tes the electric system voltage
V1) Starter: It is used to start the engine
W) Fusebox: the engine is fitted with fuses protecting
the electrical circuit, which trigger in the event of a cur-
rent overload or shortcircuit, to prevent damage to the
electrical components.
X) Boiler connection: It is used to connect the boat's
rooms to the heating system.
Y) Seawater inlet: It collects seawater to cool down the
engine
Z) Exhaust manifold: It is used to expel the combustion
gases
Z1) Water manifold: It is used to collect the coolant from
the heads
7
MR 500
GB
Ed.4 - 02/2024
Publicidad
