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A stepless VTEC

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Old May 13, 2003 | 08:18 AM
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manolis's Avatar
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A stepless VTEC

At www.pattakon.com a new Continuously Variable Valve Actuation system is presented, with working prototype photos, plots and animations (even stereoscopic ones).
Any engine, racing or normal, can be improved as the torque can be about constant from very low revs to the top allowable revs of the engine.

Comments? Objections?
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Old May 13, 2003 | 08:32 AM
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From: Somerset, KY
Isn't that the same as an engine with VVT (variable valve Timing)? That's whats on the RalliArt Lancer.
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Old May 13, 2003 | 08:49 AM
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From: summerland
I may be wrong .. but I've heard that almost without exeption VVT engines do not take forced induction well
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Old May 13, 2003 | 08:52 AM
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No, it is not just a VVT system.
It is a continuously variable (that is stepless) valve lift (from zero to a maximum) system, which manages also the actual overlap of the engine.
It works without throttle valve in intake manifold, as the intake valves are the actual throttle valves of the engine.
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Old May 13, 2003 | 09:40 AM
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From: summerland
cool, sounds like something every engine should do ... hehe
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Old May 13, 2003 | 10:30 AM
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Originally posted by leonard_shelby
I may be wrong .. but I've heard that almost without exeption VVT engines do not take forced induction well
Only because their cam profiles are normally set up for naturally aspirated power. This means a lot of exhaust/intake valve overlap. Overlap isn't good for forced induction.
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