Nissan Versa (N17): Intake valve timing control

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / Intake valve timing control

Intake valve timing control : System Diagram

Intake valve timing control : System Diagram

Intake valve timing control : system description

INPUT/OUTPUT SIGNAL CHART

Sensor	Input signal to ECM	ECM function	Actuator
Crankshaft position sensor (POS)	Engine speed*1 Piston position	Intake valve timing control	Intake valve timing control solenoid valve
Camshaft position sensor (PHASE)	Engine speed*1 Piston position
Engine oil temperature sensor	Engine oil temperature
Engine coolant temperature sensor	Engine coolant temperature
Combination meter	Vehicle speed*2

*1: ECM determines the start signal status by the signals of engine speed and battery voltage.

*2: This signal is sent to the ECM through CAN communication line.

SYSTEM DESCRIPTION

SYSTEM DESCRIPTION

This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.

The ECM receives signals such as crankshaft position, camshaft position, engine speed, engine oil temperature and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in highspeed range.

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Nissan Versa (N17): Intake valve timing control

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