Operation Manual of WEICHAI GENSET
the electronic governor controller
Remove, check (whether the rack of
high-pressure fuel pump is flexible
2
Actuator fault
and whether the connection of
transmission mechanism is loose)
and repair
The electronic governor is installed Strong shielding measures shall be
3
in an environment with high voltage taken, or the installation location
and strong interference
shall be changed
Engine dual system governor not
4
functioning automatically at low or Increase to the calibrated speed
medium diesel engine speed
5
Diesel engine
frequency
load
change Check the load output
Individual
cylinders
are
intermittently ignited, causing
6
knocking sound in the cylinder Check the fuel system
because of the excessive explosion
of accumulated oil
The fuel quantity and fuel injection
7
time of each fuel injection pump are Check and adjust it.
inconsistent
Loosen the bleed screw on the
diesel filter, pump fuel with a
8
Air trapped in the fuel system.
manual fuel pump to the bleed
screw, exhaust the air in the fuel
system, and then tighten the bleed
screw.
9
The fuel system contains moisture Check fuel and drain water
10
The timing gear moves back and
forth
Check the fastening of gears
12. Engine speed losing control
The "speed losing control" of diesel engine is also called "surging", and is a
manifestation of unstable speed of diesel engine. Phenomenon: When the diesel
engine is running at idle speed or medium speed, it presents periodic and regular
changes of speed. At the same time, the engine sound level rises and falls rhythmically;
the rotating speed fluctuates greatly; and the sound can be clearly distinguished.
Periodic "speed losing control" of diesel engine will reduce the economic performance
of diesel engine, cause unstable operation of the diesel engine, and aggravate the
wear and fatigue of parts, thus affecting the service reliability of the diesel engine. In
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