Nissan Murano: System / Exhaust Valve Timing Control

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / System Description / System / Exhaust Valve Timing Control

System Description

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL CHART

Sensor	Input signal to ECM		ECM function	Actuator
Crankshaft position sensor (POS)	Engine speed and piston position		Exhaust valve timing control	Exhaust valve timing control solenoid valve
Camshaft position sensor (PHASE)	Engine speed and piston position
Engine oil temperature sensor	Engine oil temperature
Exhaust valve timing control position sensor	Exhaust valve timing signal
Combination meter	CAN communication	Nissan Murano Vehicle speed signal

SYSTEM DESCRIPTION

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

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

Intake Valve Timing Control

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Engine Protection Control at Low Engine Oil Pressure

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