Fuel Metering Valve
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| Illustration 1 | g01021995 |
Fuel metering valve | |
The fuel metering valve is electronically controlled and electrically actuated. The fuel metering valve and the master Electronic Control Module (ECM) communicate via the CAN data link.
Actuators
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| Illustration 2 | g01090669 |
Left side view (1) Throttle actuator (2) Actuator for the compressor bypass valve | |
Throttle actuator (1) and the actuator for the compressor bypass valve (2) are electronically controlled and electrically actuated. The ECM issues commands to the actuators via the CAN data link.
Sensors
Sensors provide information to the electronic control modules. The information enables the modules to control the engine as efficiently as possible over a wide range of operating conditions. The information is used for monitoring engine operation.
The sensors also enable the activation of alarms and of shutoffs in response to abnormal operation. Illustrations 3 and 4 show the locations of the sensors. Refer to Systems Operation/Testing and Adjusting, "Engine Sensors" for the descriptions of the sensors.
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| Illustration 3 | g01077802 |
Right side view (1) Inlet air temperature sensor (2) Detonation sensor (3) Engine coolant temperature sensor (4) Pressure switch for the coolant pump (inlet) | |
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| Illustration 4 | g01090674 |
Left side view (5) Pressure sensor for unfiltered oil (6) Pressure sensor for filtered oil (7) Boost pressure sensor (8) Humidity sensor (9) Atmospheric pressure sensor (10) Engine coolant pressure sensor (outlet) (11) Oxygen sensor (12) Inlet air pressure sensor (13) Engine oil temperature sensor (14) Buffer for the oxygen sensor (15) Speed/timing sensor | |
Thermocouples and Integrated Temperature Sensing Module
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| Illustration 5 | g01077795 |
Left side view (1) Integrated temperature sensing module (2) Thermocouple for the temperature of a cylinder exhaust port (3) Thermocouple for the temperature of the exhaust inlet to the turbocharger turbine (4) Thermocouples for the temperature of the turbocharger exhaust outlet | |
Thermocouples provide information to the Integrated Temperature Sensing Module (ITSM). The information is used to monitor engine operation. The thermocouples also enable alarms and shutoffs to be activated. Refer to Systems Operation/Testing and Adjusting, "Integrated Temperature Sensing Module" for the descriptions of the thermocouples.
The ITSM monitors all of the thermocouples. The ITSM broadcasts the temperature readings of the thermocouples over the Cat Data Link for use by other modules. Refer to Systems Operation/Testing and Adjusting, "Integrated Temperature Sensing Module" for the description of the ITSM.