QSK19-发动机资料.pptVIP

Engine Speed Sensor The engine speed sensor is located in the back of the front gear housing. It detects 24 raised pads on the back of the camshaft gear and sends signals to the ECM. The ECM processes these signals to determine engine speed. The sensor has a dual signal output providing two separate signals to the ECM. Even if one signal is lost, the engine will continue to operate. ESS QUANTUM INPUTS - SPEED SENSOR System Switches There can be two system switches, They are: QUANTUM INPUTS - SYSTEM SWITCHES Idle validation switch Coolant level switch (CLS) Idle Validation Switch The idle validation switch is located in the throttle pedal assembly. It provides a confirming signal to the ECM as to the position ( released or depressed) of the throttle pedal. QUANTUM INPUTS - IDLE VALIDATION Coolant Level Switch The coolant switch monitors the coolant level in the radiator header tank. If the fluid level drops below a predetermined point the switch will open, indicating a low fluid level to the ECM. The information this sensor obtains is utilized by the ECM to make decisions for engine protection. CLS QUANTUM INPUTS - COOLANT LEVEL Oil or Coolant Pressure Sensor Torque = 14Nm (10 ftlb) Pressure(kPa) Pressure(psi) Voltage(V) 0 0 0.32 - 0.69 172 25 1.27 - 1.74 345 50 2.22 - 2.79 517 75 3.17 - 3.84 689 100 4.12 - 4.89 Intake Manifold Pressure Sensor Torque = 14Nm (10 ftlb) Pressure(kPa) Pressure(inHg) Voltage(V) 0 0 0.36 - 0.65 517 20.4 1.21 - 1.49 1035 40.7 1.88 - 2.33 1553 61.1 2.64 - 3.17 2070 81.4 3.40 - 4.01 2588 102 4.16 - 4.85 All Temperature Sensors Torque = 15Nm (11 ftlb) Temperature(°C) Temperature(°F) Resistance(?) 0 32 30K - 36K 25 77 9K - 11K 50 122 3K - 4K 75 167 1350 - 1500 100 212 600 - 675 Fuel Pump or Timing Rail Pressure Sensor Torque = 14Nm (10 ftlb) Altitude(m) Altitude(ft) Voltage(V) 104 15 0.40 - 0.61 586 50 0.96 - 1.23 931 100 1.77 - 2.12 1276 150 2.58 - 3.02 1620 200 3.39 - 3.91 1725 250 4