Operation and Maintenance Manual of WP13C Series Diesel Engines
Weichai Power Pursuit of Excellence
- 5 -
The
fuel
system
mainly
consists
of
the
fuel
delivery
pump,
fuel
filter,
high
pressure
fuel
pump,
fuel
injector
and
high/low
pressure
oil
pipes.
When
the
diesel
engine
is
working,
the
fuel
delivery
pump
absorbs
diesel
fuel
from
the
fuel
tank,
the
fuel
flows
through
the
fuel
filter,
high
pressure
fuel
pump,
enters
the
fuel injector
for
being
injected
into
the
combustion
chamber,
and
remaining
diesel
fuel
flows
back
to
the
fuel tank
through
the
fuel
return
pipe.
(See
figure
2-4).
The fuel system is a very critical component of diesel engine and is externally connected with the fuel tank
and fuel pipes, and its manufacturing and mounting quality and the fuel quality used influence the
performance and reliability of diesel engine. The user’s fuel tank shall be clean, free of rust and corrosion,
and there shall be no impurity generated by chemical reaction between materials and diesel fuel. The fuel
tank shall be equipped with a fuel drainage device to drain water and impurities in the fuel, and it is
preferable that the fuel outlet pipe of fuel tank be equipped with a valve to facilitate maintenance of
pipeline.
3.1 Fuel return
When mounting the fuel return pipe, be careful to avoid contact with high temperature parts (exhaust pipe,
turbocharger, exhaust return pipe, etc) of the diesel engine. No throttling area is allowed in the fuel return
pipe. The fuel return pipe shall not contact with sharp edges, or be bent into sharp corner, or even twisted.
Improper mounting of the fuel return pipe may cause fuel leakage to engine.
To Next Page
Loading...
Need help?
General
