CNET On Cars - Car Tech 101: Variable Valve Timing explained

[Wingznut]

CNET On Cars - Car Tech 101: Variable Valve Timing explained (YouTube)

I'm sure that a lot of people here fully understand Variable Valve Timing. But also, I'm sure that many will learn a thing or two in this video.

Enjoy.

 

[BUTCH1]

CNET On Cars - Car Tech 101: Variable Valve Timing explained (YouTube)

I'm sure that a lot of people here fully understand Variable Valve Timing. But also, I'm sure that many will learn a thing or two in this video.

Enjoy.

Fairly well done, my only issue with VVT is that it adds to the mechanical and electrical complexity of the engine, but it does work as advertized..

 

[996GT2]

Fairly well done, my only issue with VVT is that it adds to the mechanical and electrical complexity of the engine, but it does work as advertized..

There are VVT engines out there which are more reliable than non-VVT engines. It adds complexity, but is only one factor out of many in determining overall engine reliability.

 

[LTC8K6]

Should have mentioned that if you take it all the way, you don't actually need a throttle plate, like on a BMW.

 

[Yuriman]

Should have mentioned that if you take it all the way, you don't actually need a throttle plate, like on a BMW.

Right, or like on the most recent Civics.

 

[phucheneh]

That would require variable lift, not just timing.

 

[Midwayman]

That would require variable lift, not just timing.

Right, but they talk about that in the video too. Isn't Bugatti or someone making an engine using solenoids to operate the valves? Complete freedom from all the mechanical issues with the valve timing/lift/duration.

 

[Yuriman]

Right, but they talk about that in the video too. Isn't Bugatti or someone making an engine using solenoids to operate the valves? Complete freedom from all the mechanical issues with the valve timing/lift/duration.

That's mind-boggling. Each solenoid would need to be good for around 1,000,000,000 uses to survive as long as a typical engine. I suppose if they're easy to replace, it could be part of regular maintenance, like when replacing a timing belt in a conventional engine.

They'd need to be cheap to make it into something non-Bugatti, too.

 

[LevelSea]

Right, but they talk about that in the video too. Isn't Bugatti or someone making an engine using solenoids to operate the valves? Complete freedom from all the mechanical issues with the valve timing/lift/duration.

That'd be Koenigseggisseggggnignigsegigisegggnigseggniggsegg.

http://youtu.be/Bch5B23_pu0