Hydro-mechanical variable valve actuation
OwnerManousos Pattakos, John Pattakos +1inventors
InventorsManousos Pattakos, John Pattakos, Emmanouel Pattakos
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Abstract
A hydro-mechanical variable valve actuation system capable to operate according the “ingoing air control” mode the multiair system of Fiat operates and according the “outgoing air control” mode wherein the load is controlled by the quantity of air that the intake valves allow to escape from the cylinder. A different long-duration cam lobe and a reprogramming of the digital controller is all it takes in order to upgrade the existing multiair system of Fiat.
Claims10
A hydro-mechanical variable valve actuation system wherein a cam, rotating in synchronization to a crankshaft, activates indirectly an intake valve of a cylinder by means of oil trapped into an oil chamber and interposed between the cam and the valve;
- the cam displaces a plunger, the plunger displaces the oil and the oil displaces the intake valve;
- by opening a release valve, the oil escapes from the chamber and the intake valve restores, characterized in that the intake valve controls the load by controlling the quantity of the outgoing from the cylinder air.
Dependencies are inferred from the claim text.