Tech question: What is Dual VVT-I?

[HRunner]

Anyone heard about Dual VVT-I system? What is it?

Which Toyota engine or which car has dual VVT-I?

Thanks~

 

[HRunner]

No idea???

 

[dcampen]

I have heard of VVTi but not dual VVTi.

 

[bulldog-yota]

COrrect me if I'm wrong, but currently VVTi is only on the intake cam. DUal VVTi is for both the intake and exhaust cams.

 

[GatorGreg]

Anyone heard about Dual VVT-I system? What is it?

Which Toyota engine or which car has dual VVT-I?

Thanks~

I don't know what it is but I saw an ad in the paper recently for a new Avalon and I noticed it said it had dual vvt-i on a 3.5L engine. The horsepower rating also caught my eye - 280 hp I think

 

[Thai]

COrrect me if I'm wrong, but currently VVTi is only on the intake cam. DUal VVTi is for both the intake and exhaust cams.

Bulldog is right. Only the newer Lexus/Toyota engines have it...the 4runner's new V8 only has it on the intake side. I think that the new generation V6 (Lexus GS300 and Avalon) have it, along with direct injection. I am sure that the next generation V8 for the GS430 will have it since BMW has it already on their V8 engines.