These engine sensors must
be installed on the engine and monitored whenever the
engine is running to ensure safe and reliable operation
of the engine.
Tachometer - This should be a hall effect or
magnetic pickup type. There is no magneto impulse to
pick up, and no mechanical drive
Flow – A minus B type fuel flow. 30 gal/hr max.
total fuel circulation
Pressure - Normal pressure between 40
and 80 psig. Located between
engine 5 micron fuel filter and the high-pressure
injector pump housing.
Temperature – Location as per fuel flow diagram
provided in installation manual.
Temperature - Normal 220o F. Minimum 150o
F. for take-off. Maximum 240o F
Pressure – Standard 0-100 psi. Located in accessory
block as per oil diagram provided in installation
40 psig min. normal operating, 50-70 psig normal
- Standard. Normal 180-200 deg F. Minimum
(cruise) 140 deg F. Maximum 215 deg F.
(Out of cooler to the engine)
Blower Temperature (IBT) – Only needed if intending
to use engine above 18,000 ft pressure altitude.
Provides first indication of impending Turbocharger
Cylinder Head Temperature (CHT) - One probe for
engine. Used to monitor engine temperature in event of
coolant system failure. Range is 270-300 degrees F.
Peak allowed ~350 deg F. Max allowable 500F without
Manifold Pressure - Turbocharger maximum pressure
should be no more than 80"
Hg above ambient,
approximately 110" Hg total. Unlike spark
ignition engines, does not indicate engine power output
of DeltaHawk engines.
These sensors are optional
and are not required for the safe and efficient
operation of the engine, but would provide additional
information about the condition of the engine.
Pressure - Use gauge capable of 25 psi maximum. Not
mandatory. May give early indication of coolant leak.
Located on the coolant reservoir.
– Not necessary, but will be good tool for diagnosis of
engine condition and cool-down of turbocharger.
Measured at turbocharger turbine inlet. Standard EGT thermocouple probe. This is not mandatory since inlet temperature never exceeds turbo limits. There is no mixture to adjust so EGT is not needed for that purpose. Expected peak is 1150 deg F
Cylinder Head Temperature – One probe for EACH
cylinder. Used to assess condition of engine. If a
fuel injector becomes inoperable, that cylinder head
temperature probe may indicate a lower temperature that
the other cylinders. Also provides guidance on max power
available with loss of coolant event.