CYLINDER GP-COMPENSATING 8I6159 - Caterpillar

Illustration 1 g00284479
Example Of Pulse Width ModulationRated Fuel Limit - The rated fuel limit indicates the maximum allowable fuel position. The rated fuel limit will produce rated power for this engine configuration.Reference Voltage - The reference voltage is a regulated voltage that is used by the sensor in order to generate a signal voltage.Sensor - A sensor is used to detect a change in the pressure, in the temperature, or in mechanical movement. When any of these changes are detected, a sensor converts the change into an electrical signal."Serv Code" Indicator - This indicator is used to warn the operator of the presence of active diagnostics.Short Circuit - A short circuit is an electrical circuit that is mistakenly connected to an undesirable point. For example, an electrical contact is made with the frame whenever an exposed wire rubs against a frame.Signal - A signal is a voltage or a wave that is used to transmit information that is typically from a sensor to the ECM.Speed/timing Sensor - This sensor provides a pulse width modulated signal to the ECM. The ECM interprets this signal as the crankshaft position and the engine speed.Static Timing - Static timing is the basis for fuel injection timing and valve mechanism operation. Static timing is determined by the timing ring and the alignment of the rear gear group and the camshaft timing pin.Subsystem - A subsystem is a part of the EUI system that relates to a particular function.Supply Voltage - Supply voltage is a constant voltage that is supplied to a component in order to provide electrical power for operation. Supply voltage may be generated by the ECM. Supply voltage may also be battery voltage that is supplied by the wiring."T" Harness - This harness is a test harness that is designed to permit normal circuit operation and the measurement of the voltage simultaneously. Typically, the harness is inserted between two connectors.Total Tattletale - The total tattletale is the total number of changes to all system parameters.Turbocharger Inlet Pressure Sensor - This sensor measures the inlet air pressure in the tubes in the air induction system. The sensor sends signals to the ECM.Turbocharger Outlet Pressure Sensor - This sensor measures the inlet manifold air pressure. The sensor sends a signal to the ECM.User Defined Shutdown - This is a switch input into the ECM. The user defined shutdown allows the owner of the machine to install an aftermarket system. This system is used for engine shutdown. The ECM terminates the fuel injection when the switch input is connected to a ground.Variable Speed Fan - The variable speed fan is a system that uses hydraulic oil in order to power a drive motor. The drive motor is connected to the engine cooling fan. Fan speed is controlled by regulating the amount of oil that flows to the fan drive motor. The regulation of oil flow is accomplished by a solenoid. The solenoid is controlled by the ECM. The ECM uses the coolant temperature sensor in