SEALES DE ENTRADA

INS. DAVID CALDERON PAULINO

Sensor Analogico OperationsOperates on 5 Volts for All D.C. Sensors.254.75NormalOperatingRangeLow Voltage05High Voltage

SENSOR DE VELOCIDAD DE FRECUENCIA

Sensor de temperatura - Fluidos y aire ambiente

Pulse Width Modulated PWM Sensors

2-cables SensorsHI VOLTAGELO VOLTAGE

2-wire SensorsHI VOLTAGELO VOLTAGE

3-wire(cables) SensorsLO VOLTAGELO VOLTAGE HI VOLTAGEHI VOLTAGELO VOLTAGELO VOLTAGE

Series 50/60SRS/TRS SensorsSRS/TRSTiming WheelDDEC IIDDEC II Bull Gear

Turbo Boost SensorDDEC III Series 50/60/2-CycleSeries 2000 / 4000Series 50/60 DDEC IVSeries 53

Temperature SensorsCoolant Temperature SensorSeries 50/60Air Temperature SensorSeries 50/60Fuel/Oil/Coolant Temperature Sensor Series 50/60/2-Cycle - Air Temp 53Fuel/Oil/Coolant Temperature SensorSeries 2000/4000

Temperature SensorsCoolant Temperature SensorSeries 50/60Air Temperature SensorSeries 50/55/60Fuel/Oil/Coolant Temperature Sensor Series 50/55/60/2-CycleFuel/Oil/Coolant Temperature SensorSeries 2000/4000

Pressure SensorsSeries 50/60/2-CycleSeries 2000/4000Series 2000/4000Different Harness ConnectorsCoolantPressureOil / FuelPressureSeries 4000 High Pressure Fuel

Schematic Diagram DDEC III / IVOil / Fuel Pressure Fuel / Oil / CoolantTemperatureTurbo Boost PressureTiming ReferenceSynch ReferenceElectronic FootPedal AssemblyOil level/Fuel RestrictionEUI

BULL GEAR ASSEMBLY SERIES 50/60 SRS PIN

I.SYNCHRONOUS REFERENCE PINA.Located in the bull gear.B.Caution should be used when handling the gear assembly to avoid damaging the pin.

II.DDEC II A.The SRS Pin on DDEC II bull gear is flush with the face of the gear to help distinguish a II assembly from a III/IV assembly. III.THE NEXT TRS TOOTH SEEN AFTER READING THE SRS PIN, ON DDEC II, WAS LOCATED 10 BEFORE TDC.TURBO BOOST SENSORI. TBSA.The TBS (Turbo Boost Sensor ) is a piezoresistive (a type of variable resistor) pressure sensor. A diaphragm of silicon material, inside, deflects when pressure is applied to it. A 5 volt reference voltage is fed from the ECM to the TBS. This results in a return voltage between 0.25 and 4.75 volts at the output terminal. This voltage is proportional to the pressure applied to the diaphragm (Turbo and Atmospheric Pressure).B.Use in Engine Control1.The TBS senses the output pressure of the turbocharger. The ECM uses this to determine the amount of smoke control to apply during acceleration.2.DDEC II requires the ignition on and engine off or at idle (no turbo boost pressure), the ECM calculates the barometric pressure from the TBS output. This quantity can be displayed on the DDR. 3.DDEC III/IV measures turbo boost anytime the engine power drops below 3% load on engine

II.IDENTIFICATIONA.The TBS used with DDEC II and DDEC III are identical both having a range of 0 to 3 atmospheres (44.1 psi). DDEC IV has the range from to 0 to 4 atmospheres (58.8psi).

III.NEW TBS FOR DDEC IVA.The new TBS is 70 kPa (kilopascals) to 400 kPa absolute. This is 10.2 psi to 58 psi absolute. The range in atmospheres is 0 to 4. Series 50/60 went from a 300 KPA TBS to the new one to support the wastegated turbo. A higher range sensor was required to detect high boost pressure caused by a failed or tampered with wastegate.TEMPERATURE SENSOR

I.OIL TEMPEATURE SENSOR (OTS)A.The OTS is a thermistor type sensor. Thermistor are heat sensitive variable resistors. As it gets hotter, the resistance of the sensor decreases. The temperature range of this sensor is -40 F to + 300 F. B.This sensor is connected to the ECM which translates the voltage across it to oil temperature.C.Use in engine control.1.Cold start. The strategy varies with application, but in general: the ECM increases idle speed, adds extra fuel, and alters the beginning of injection depending on the engine temperature.2.Engine protection. If the OTS temperature reading exceeds temperature limits, ECM can be programmed for warning, rampdown or shutdown.3.Also is used for increased idle up to 800 rpm after the engine is started for rapid warm up. In applications that do not offer half engine.

II.COOLANT TEMPERATURE SENSORA.The same sensor is used for the CTS as is used for the OTS. The location of the CTS is changed to a coolant passage instead of an oil gallery.B.Use in engine control.1.Cold Start. The CTS is used the same way in which the OTS is used.2.Engine Protection. The only difference from the OTS strategy is the temperature limits. Programmable for warning, rampdown or shutdown.TEMPERATURE SENSOR (Continues)

III.FUEL TEMPERATURE SENSOR (FTS)A.The same sensor is used for the FTS as the above two sensors. The location of the sensor is dependent on application and engine series.B.Use in engine operations.1.Fuel Consumption. Diesel fuel density changes with temperature. With data from the FTS, this density change is accounted for in the fuel consumption calculations and yields an accuracy of within + or - 4%. The total fuel used can be read by the Diagnostic Data Reader or DDDL. On dual ECM engines, the fuel consumption reading must be doubled in order to obtain an accurate reading.

IV.CHARGE AIR COOLANT TEMP SENSOR IS USED ON THE 4000 & 149 ENGINES.OIL, FUEL, AND COOLANT PRESSURE SENSORI.PRESSURE SENSOR (OPS,FPS,CPS)A.Oil/Fuel pressure sensor is a variable capacitor type pressure transducer. A 5 volt reference voltage is sent from the ECM to the pressure sensor. The sensor returns a voltage between 0.25 and 4.75 volts which is proportional to oil or fuel pressure.NOTE: These sensors operate between 15psi and 58 psi.B.The ECM can be programmed for warning, rampdown or shutdown if the oil pressure falls below specified limits.C.The fuel pressure sensor is optional for highway application, however it is presently standard for Series 149, marine applications and industrial applications. Also used on 2000 & 4000 engines.D.Coolant pressure sensor is used by the 149, 2000, 4000 and 60 Marine Series. It is located in the coolant return hole on the left side of the front block of the 149, Series 2000- sensor is located in the front right side of the engine. Series 4000 - sensor is located in the thermostat housing at the right front of the engine. Series 60 Marine sensor is located in the oil cooler tube from the water pump.E.Rail pressure sensor used on 4000 engines have a range from 0 bar to over 1350 bar - 20,000 psi.