Motor VVTI

Funcionamento motor VVTI, valvulas

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  Autos & Vehicles

[regandagg77]

Variable cam phasing is nothing new this day in age. I think honda have certainly put their mark on it when you look at how well an iVtec system works compared to anything else..not only do they make alot more power they are almost bullet proof in their design. Maybe other manufacturers should focus on variable intake manifold and exhaust tuning.

[Timothy Walsh]

i have a 140 vvti celica and it sucks ... dont waste your money ,.... handles well but comparatively slow as shit ... you have been warned ;)

[spentfromnz]

@deadman2141

Like any engine, the cam blocks off the intake valve when the chamber is combusting.

[stupidplants]

because its not as awesome.

[Arqera]

With Variable timing on the exhaust side, the engine can allow overlap and some of the exhaust is drawn back into the cylinder to be burnt in the next powerstroke, thus achieving the same effect as an EGR valve without the extra tubing and weight.. Less weight helps the fuel economy. ;)

[immortal4942]

vtec engagement is different from vvt. that has to do with cam lifting.

[Jimmy M]

So then doesn't it make back pressure almost essential? to prevent exhaust gasses from going back into the intake and prevent the new charge of air just go right out the tail pipe? J.W.

[Barron Erik Bautista]

intake valve lead at 0:14

[1PARADOXXX]

Why not just use an EGR valve?

[Rico8458]

copy that sir. thanks for the feedback. i hear that dude.