R750EU5 - IE3 - TE4 - IE4 - ISE4
English 8 Ed.8 / 10-2012
GB
ENGINE GENERAL DESCRIPTION
TECHNICAL INFORMATION
Engines of series R754 EU5 - R756
EU5 were designed and manufactured to
be installed on road vehicles, such as for
example road-cleaning vans, lorries, etc.,
on condition that they have been type-approved according to EURO 5 anti-pollution
directives. Model R754IE3, R756IE3,
R754TE4-IE4-ISE4 engines have been
designed for off-road use, tted in agricultural machinery or load lifting machines.
The models of engine differ from each
other in both power and performance (See “Technical data R754EU5,
R756EU5, R754IE3, R756IE3, R754TE4IE4-ISE4”).
Main components R754IE3, R756IE3,
R754EU5, R756EU5
A) Cooler: cools the engine oil by heat
exchange with the coolant uid.
B) Turbo device: Made up of a turbine
which exploits a part of the exhaust gas
energy to carry out the engine turbocharging.
C) “EGR” valve: modulates the recircula-
tion of exhaust gasses before they ow
into the suction manifold.
D) “waste-gate” valve: It controls the turbo
device activation, depending on the pressure of the exhaust gases.
E) Heat expansion valve: It adjusts the
water temperature according to the engine working temperature
F) Fuel lter: It traps any impurity
G) Oil lter: It traps any impurity
H) Oil sump: It contains the engine lubri-
cation oil
L) Suction manifold: conveys the combustion air into the combustion chamber.
M) Water pump: feeds the cooling circuit
N) Driving belt (type Poly-V): it starts
service devices, the alternator (Q) and the
water pump (M).
P) Automatic belt tightener: it keeps the
belt constantly tightened.
Q) alternating current generator: It produces and regulates the electric system
voltage
R) Starter: It is used to start the engine
S) Exhaust manifold: It is used to expel
the combustion gases
T) Water manifold: It is used to collect the
coolant from the heads
U) high pressure injection pump: It feeds
the injectors with fuel under pressure
V) Injector: injects pressurised fuel into
the combustion chamber.
W) Antiparticulate lter R754EU5,
R756EU5: this is installed in the engine
exhaust pipe conduit. It serves to retain the particulate so as to reduce the
emissions from diesel engines, which are
responsible for atmospheric pollution.
X) Air lter: for engine intake.
The air is ltered over 3 phases: in the
cyclone pre-separator , in the main lter
and in the safety lter.
Y) Debimeter R754EU5, R756EU5: it detects the air mass that feeds the engine.
Z) Rail: stores pressurised fuel and distributes it to the injectors.