How Variable Valve Timing Works

Here's how the Variable Valve Timing System Works on a car's engine.

The four-stroke internal combustion engine consists of gasoline-rich air entering the cylinder in the intake stroke, compressed, then ignited to push the piston down to rotate the crankshaft in the power stroke. The piston then returns to the top pushing the exhaust gases out the valves, only for the cycle to be repeated over again.

Variable valve timing optimizes fuel economy, thermal efficiency and emissions. An oil activated cam-phaser actuator is controlled by the ECU through an oil control valve. Oil pressure is sent through the VVT gear to fill up cavities to advance or retard timing. A closed loop control system utilizing the cam and crank position sensors is formed to ensure optimal timing by the ECU for either more power, or less emissions.

In this video, the engine from an Infiniti G35 (VQ35DE) is taken apart to explain the components of the variable valve timing system, including the oil control valve, camshaft bearing caps, timing tensioner, engine head, valves, camshaft and pistons.

Make sure you change your engine oil frequently!

Here's where to get OEM oil filters:
https://amzn.to/2YHimYT (US)
https://amzn.to/2GMIYl6 (Canada)
Engine oil:
https://amzn.to/2YK22Xf (US)
https://amzn.to/2YpdJYm (Canada)
This is the oil filter wrench I use:
https://amzn.to/2KhVT0N (US)
https://amzn.to/2GJOZ1Y (Canada)
Oil Drain pan:
https://amzn.to/2GLSIfA (US)
https://amzn.to/2Khgouo (Canada)
Oil products to check out:
https://amzn.to/31jhCLu (US)
https://amzn.to/2YHSoV4 (Canada)
This is where my brother gets his toothbrushes from:
https://amzn.to/31h7O4l (US)
https://amzn.to/2T7ZAsv (Canada)
This is the Camera I use:
https://amzn.to/2Y24ixX (US)
https://amzn.to/2Yhb3eo (Canada)

Reference videos:
How an Engine Works (3.5L V6 Nissan VQ35DE):
https://www.youtube.com/watch?v=fuW3prs_vx0
How the Engine Lubrication System Works (3.5L V6 Nissan VQ35DE):
https://www.youtube.com/watch?v=-R3Q9wIziFM
How to remove an engine:
https://www.youtube.com/watch?v=wvxbSrNaYHM

Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies:
https://www.etsy.com/ca/shop/Speedkar

Check out the speedkar99 Facebook page:
https://www.facebook.com/speedkar9/

Check out the speedkar99 Linkedin page:
https://www.linkedin.com/company/speedkar99/

Follow speedkar9 on Instagram for behind the scenes coverage:
https://www.instagram.com/speedkar9/

Subscribe for more videos just like this:
https://www.youtube.com/subscription_center?add_user=speedkar99

Видео How Variable Valve Timing Works канала speedkar99