Monaco SIGNATURE 2001 series, Owner'S Manual

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The diesel engine operates differently from the conventional gasoline
engine. Gasoline engines control engine speed using a butterfly throttle plate
controlling air/fuel mixture inlet flow. As the throttle plate opens, vacuum
created by the piston velocity draws the metered fuel/air charge into the com-
bustion chamber, then ignited from a controlled electric ignition source.
Closing the throttle plate limits the fuel/air supply, slowing engine speed,
increasing intake manifold vacuum.
The diesel engine in the motorhome controls engine speed by varying fuel
supply only. No throttle plates are used. An exhaust driven turbine system
(turbocharger) compresses the fresh air supply into the engine. The fuel is
injected under pressure into the combustion chamber. Ignition of fuel/air
charge occurs from heat generated by rapid high compression. The turbo
boost gauge registers amount of intake manifold compression measured in
lbs./in². Therefore, no intake manifold vacuum exists.
Diesel engine RPM (revolutions per minute) operating speeds are general-
ly much lower than that of the gasoline engine. Peak torque and horsepower
output values occur at much lower engine speeds. Idle speeds between the
two engine types are similar, however maximum engine speeds are quite dif-
ferent. The gasoline engine generally is not regulated to a maximum engine
speed. The maximum engine speed on a diesel engine is controlled by an
engine speed governor set by the engine manufacturer.
WARNING: Do not operate a diesel engine where there are or can be
combustible vapors. Vapors can be drawn through air intake system and
cause engine acceleration and over-speeding, resulting in fire, explosion
and extensive property damage.Numerous safety devices are available,
such as air intake shutoff devices, to minimize risk of over-speeding
where an engine (due to its application) might operate in a combustible
environment, such as fuel spills or gas leaks. Equipment owner and
operator is responsible for safe operation of engine. Consult your engine
authorized repair location for future information.
Chassis Information
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S I G N A T U R E
1 0 • 2 8 3
ENGINE- GENERAL
INFORMATION