Toymods Car Club Inc: Tech & Conversions => New stepless throttless valvetrain

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manolis
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Registered:
July 2003

Re: New stepless throttless valvetrain

Fri, 04 July 2003 07:35

HKSPete wrote on Fri, 04 July 2003 13:18

This is all very ... of lower fuel consumption and emissions.

Applying the new VVA system in normal 4 valve per cylinder engines, and using just one wild cam lobe per pair of valves, it is actually like having infinite cam lobes (from wild to ultra soft) and use the best according instant operational conditions.

We plan to apply the system in a 16 valve straight four, 1.8 litter new Ford Mondeo engine. We have to remap injection and spark advance, as the operation of the engine is completely different. It seems necessary also the substitution of present intake manifold with multi body throttle system (but without the throttles). Then we will evaluate the result and proceed.

In our future plans is the retrofit of older engine heads. But we are not yet ready.

What we are trying to achieve are engines offering at high revs power per litter similar to the best VTEC or racing, and simultaneously offering the drivability, the economy and the low pollution of the best family car engines.
In other words, we are trying to achieve substantially constant torque from extreme low revs to the rev limit of the engine.

Thanks
Manolis Pattakos

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