What regulates the timing of the exhaust valve?
Camshaft. In four-stroke cycle engines and some two-stroke cycle engines, the valve timing is controlled by the camshaft. It can be varied by modifying the camshaft, or it can be varied during engine operation by variable valve timing.
What is exhaust valve timing control?
The exhaust valve timing control system continuously controls cam phases in constant exhaust valve operating angle conditions and adjusts an operating oil pressure to the exhaust valve timing controller via the control solenoid valve.
How does the exhaust valve timing control work?
The Engine Control Module ( ECM) receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the exhaust valve timing control solenoid valve depending on driving status.
What causes an exhaust valve to stick open?
Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. Since the exhaust valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code. What does this mean?
What is the timing of the inlet valve?
The timing of the opening & closing of valves is specified in degrees corresponding to the position of engine’s pistons. Engine valve timing is the most critical process of IC engines. The inlet valve usually opens few degrees before the piston reaches TDC in its exhaust stroke.
How does valve timing affect an IC engine?
An automotive engine uses valves for it’s ‘breathing’ (inhale/exhale) process. The engine’s camshaft opens and closes the valves at a specific interval. The timing of the opening & closing of valves is specified in degrees corresponding to the position of engine’s pistons. Engine valve timing is the most critical process of IC engines.
The Engine Control Module ( ECM) receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the exhaust valve timing control solenoid valve depending on driving status.
What causes the timing control solenoid valve to close?
Since the exhaust valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code. There is a factory service bulletin for the following Nissan Models: 2009 Nissan Maxima 2010 Nissan Maxima 2011 Nissan Maxima
How to install valve timing control on Nissan Rogue?
Install intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid valve and exhaust valve timing control solenoid valve to valve timing control cover. Install O-ring to front cover side. CAUTION: Do not reuse O-ring. Apply liquid gasket to the positions shown.
What causes the exhaust valve to open and close?
Since the exhaust valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code. There is a factory service bulletin for the following Nissan Models: