SECTION 01: ENGINE
PA1562
5
Exhaust Temperature Sensor (DPF Sensors)
The exhaust gas temperature sensor detects
exhaust gas temperature for DPF protection as
well as DPF regeneration control. The sensor
modifies a voltage signal from the control unit.
The modified signal returns to the control unit as
the exhaust temperature at that specific location
of the exhaust. The sensor uses a thermistor
that is
sensitive to the change in temperature.
The Exhaust Temperature Sensors are located in
the DPF assembly.
Fuel Pressure Sensor
The fuel pressure sensor contains a diaphragm
that senses fuel pressure. A pressure change
causes the diaphragm to flex, inducing a stress
or strain in the diaphragm. The resistor values in
the sensor change in proportion to the stress
applied to the diaphragm and produces an
electrical output.
The Fuel Pressure Sensor is located on top of
the fuel filter housing.
Intake Air Temperature and Humidity (IATH)
Sensor
The Intake Air Temperature and Humidity (IATH)
Sensor contains a thermistor and a capacitive
sensor. The resistance of the thermistor varies
inversely to temperature. The output of the
capacitive sensor increases as the humidity of
the surrounding air increases. By monitoring the
signals from both portions of the sensor, the
Engine Management System (EMS) Module
calculates the temperature and humidity of the
air passing through the air filter housing.
The Intake Air Temperature and Humidity (IATH)
Sensor is located in the air intake tube just
downstream from the air filter canister.
Intake Manifold (Boost) Temperature Sensor
The Intake Manifold (Boost) Temperature
Sensor is a thermistor whose resistance varies
inversely to temperature. The sensor has a
negative temperature coefficient, which means
the sensor resistance will decrease as the inlet
air temperature increases.
The Intake Manifold (Boost) Temperature
Sensor is located in the intake manifold.
Intake Manifold Pressure Sensor
The Intake Manifold Pressure Sensor contains a
pressure sensitive diaphragm and an electrical
amplifier. Mechanical pressure applied to the
diaphragm causes the diaphragm to deflect and
the amplifier to produce an electrical signal
proportional to the deflection.
The Intake Manifold Pressure Sensor is located
on the air inlet pipe before the intake manifold.
Throttle Position (TP) Sensor
The Throttle Position Sensor is a potentiometer
that is mechanically linked to the accelerator
pedal. A potentiometer is a variable resistor
whose resistance will change as the pedal is
pressed. As the resistance changes, the signal
voltage of the sensor changes indicating the
accelerator pedal position.
The Throttle Position Sensor is located above
the accelerator pedal. The sensor is designed to
improve the driver’s control by reducing
sensitivity to chassis motion. This sensor
provides the driver’s fuel request input to the
VECU.
Turbo Speed Sensor
The Turbo Speed Sensor informs the EMS of
the turbo shaft speed. The sensor does not read
from the vanes, but reads from the shaft. The
Engine Management System (EMS) Module
uses this signal in conjunction with the VGT
position sensor signal to control the speed of the
turbocharger and therefore optimize the intake
manifold pressure.
The Turbo Speed Sensor is mounted in the
center of the turbocharger.
Variable Geometry Turbocharger Smart
Remote Actuator (VGT SRA)
The Variable Geometry Turbocharger Smart
Remote Actuator (VGT SRA) takes the position
commands from the EMS, moves the nozzle of
the turbocharger to the desired position, and
performs all of the diagnostics and self checks
on the actuator.
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Страница 1: ...COACH MANUFACTURER MAINTENANCE MANUAL X3 COACHES PA1562 4th edition...
Страница 13: ...Section 00 GENERAL INFORMATION 11 PA1562 FIGURE 16 METRIC US STANDARD CONVERSION TABLE 00005...
Страница 14: ...Section 00 General Information PA1562 12 FIGURE 17 CONVERSION CHART 00006...
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Страница 373: ...SPICER SPECIALITY AXLE DIVISION place product photo here SERVICE MANUAL GENERAL INFORMATION NDS Axle range...
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Страница 929: ...TRW Automotive Commercial Steering Systems Power Steering Pump Service Manual PS SERIES Die Cut...
Страница 941: ...Initial Installation Section 2 Initial Installation Installation 14 Maintenance Tips 15...
Страница 961: ...Section 4 Reinstallation Reinstallation 34 Filling and Air Bleeding the System 35 Maintenance Tips 36 Reinstallation...
Страница 965: ...Glossary Section 5 Glossary Glossary 39...
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Страница 996: ...Section 16 SUSPENSION PA1562 28 FIGURE 34 SWAY BAR FRONT SUSPENSION 16138B FIGURE 35 SWAY BAR REAR SUSPENSION 16144...
Страница 1005: ...Section 16 SUSPENSION PA1562 37 FIGURE 49 IFS AIR TANKS LOCATION 24034 FIGURE 50 I BEAM FRONT SUSPENSION AIR TANKS LOCATION 24035...
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Страница 1075: ...Section 18 BODY PA1562 57 14 BODY PANEL AND WINDOW SPACING FIGURE 42 BODY PANEL AND WINDOW SPACING 18631...
Страница 1079: ...Section 18 BODY PA1562 61 FIGURE 45 TARABUS FLOOR COVERING ADHESIVE APPLICATION 18640 FIGURE 46 APPLICATION OF SIKA 221 GRAY18641...
Страница 1111: ...19 Manual No 7018081 02 Rel Jun 1999 Copyright Isringhausen 1999 PARTS MODEL 6800 338 BUS MODEL 6800 338 PREMIUM LX...
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Страница 1156: ...Section 22 HEATING AND AIR CONDITIONING PA1562 14 FIGURE 16 REFRIGERANT CIRCUIT CENTRAL AND AUXILIARY SYSTEMS 22313_1...
Страница 1178: ...Section 22 HEATING AND AIR CONDITIONING PA1562 36 FIGURE 36 CENTRAL HEATING SYSTEM COMPONENTS 22325...
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Страница 1197: ...Compressor 62 11052 Rev A WORKSHOP MANUAL for MODEL 05G TWIN PORT COMPRESSOR R...
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Страница 1278: ...Section 23 ACCESSORIES PA1562 18 FIGURE 26 FUNCTIONING OF LAVATORY 23051...
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Страница 1387: ...MANUAL NUMBER 160339 REVISION 09SEPT04 PAGE 1 OPERATION MAINTENANCE MANUAL Manual Number 160339 Revision 09SEPT04...
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Страница 1414: ...Section 24 LUBRICATION PA1562 4 FIGURE 1 LUBRICATION AND SERVICING POINTS ON INDEPENDENT FRONT SUSPENSION VEHICLES 24031_1...
Страница 1415: ...Section 24 LUBRICATION PA1562 5 FIGURE 2 LUBRICATION AND SERVICING POINTS ON I BEAM AXLE FRONT SUSPENSION VEHICLES 24030_1...
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