Features and Controls
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Performance Parameters
Air/Fuel Ratio
The correct air/fuel ratio is very important for the
following considerations:
• Margin of detonation
• Control of emissions
• Engine performance
• Achieving optimum service life for the engine
• Compliance with legal requirements
If the air/fuel ratio is not appropriate for the fuel and
the operating conditions, a failure of the engine may
occur. The service life of the turbochargers, the
valves, and other components may be reduced.
Fuel Supply Pressure and Temperature
The gas supply to the control valve for the air/fuel
ratio must be between 5 to 25 kPa (0.72 to 3.6 psi). If
a higher pressure is required, a separate gas
regulator must be installed into the fuel line.
The temperature of the gas into the air/fuel ratio
control system must be between 5 to 40 °C
(41 to 104°F).
Note:
No zero pressure regulator is required with the
air/fuel ratio control system for the 4016-61TRS
engine.
Air, Charge Cooler Water
Temperature, and Altitude
Refer to the Technical Data Sheet for the charts for
the derate to determine the maximum temperatures
into the engine and the altitude derate. Contact your
Perkins distributor or Perkins dealer for more
information.
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Sensors and Electrical
Components
Electronic Ignition System (EIS)
The Electronic Ignition System includes the following
components:
• The control module for the ignition
• Timing sensor
• Ignition coil on each cylinder
• Spark plugs
• Ignition harness
The ignition system generates high voltage. Do
not come in contact with the ignition system with
the engine in operation. This voltage can cause
personal injury or death.
The EIS control module is a sealed unit with no
serviceable parts. The timing sensor uses the
magnets that are mounted on the camshaft in order
to generate the timing pulses. One pulse for each
cylinder plus an index magnet in order to indicate the
start of each cycle. The EIS control module has a
output to each ignition coil. To initiate combustion in
each cylinder, the EIS sends a pulse to the primary
winding of the ignition coil. The coil increases the
voltage on the secondary winding which creates a
spark across the spark plug electrode.
The electronic ignition system provides control for the
following activities:
• Ignition timing
• Ignition energy
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