- 6 -
C1453
01000.
fm
English
Technical information
GB
D700/750 E2-E3
Engines of series
D700 - D750 (D703-
D753-D704-D754-D706-D756)
have been
designed and manufactured to be installed
and equipped "for stationary use" (for exam-
ple on power generating units), or "for self-
propelled use" (for example on earth-mov-
ing tractors).
The various models in the D700 engine se-
ries are differentiated by their power and
performance (See "Technical data").
Main components
A)
Cooler
: cools the engine oil by heat ex-
change with the coolant fluid.
B)
Turbo device
: Made up of a turbine
which exploits a part of the exhaust gas en-
ergy to carry out the engine turbocharging.
C)
Injector
: injects pressurised fuel into the
combustion chamber.
D)
"waste-gate" valve
: It controls the tur-
bo device activation, depending on the pres-
sure of the exhaust gases.
E)
Heat expansion valve
: It adjusts the
water temperature according to the engine
working temperature
F)
Fuel filter
: It traps any impurity
G)
Oil filter
: It traps any impurity
H)
Oil sump
: It contains the engine lubrica-
tion oil
L)
Suction manifold
: conveys the com-
bustion air into the combustion chamber.
M)
Water pump
: feeds the cooling circuit
N)
Transmission belt
: It drives the service
parts
P)
Injection pump
: It feeds the injectors
with fuel under pressure
Important
Engines of model D703 (3 cylinders) are
equipped with a single injection pump
per cylinder, while models D753-D704-
D754-D706-D756 (3-4-6 cylinders) are
equipped with a mechanical rotating in-
jection pump.
Q)
Alternating current generator
: It pro-
duces 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
TECHNICAL INFORMATION
ENGINE GENERAL DESCRIPTION