Introduction to On Board Diagnostics (II)

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Powertrain and EmissionControls in PassengerVehicles (contd(contd)The powertrain components relevant to emissions are:• Throttle & Manifold• Exhaust & Fuel system• Combustion & Rotational dynamics• Automatic TransmissionEach of the above components is further divided into the following sub-components:Throttle & manifold:• Throttle Body assembly• Idle Air Control Valve (IACV)• Exhaust Gas Recirculation (EGR)• Intake Manifold
Powertrain and EmissionControls in PassengerVehicles (contd(contd)Exhaust & Fuel system consists of the following components:Exhaust & Fuel system:• Exhaust valves• Exhaust Gas line• Fuel Pump• Fuel Level Sensor• Vacuum Sensor• Canister Vent• Fuel Feed and Metering• Fuel Injection nozzles• Oxygen sensor• Catalytic Converter
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Sensors and ActuatorsEmployed in OB
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Sensors and ActuatorsKnock sensorEm
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Secondary air valvesSensors and Act
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Functionality of PowertrainControl
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Introduction to On Board Diagnostics (II)

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