Patent ID: 8776749
Filing Date: 2014-07-15
Classification: F01L

Abstract:
1. A desmodromic hydraulic valve train for reciprocating piston engines and pumps comprising at least: a valve ( an opening oil chamber ( a closing oil chamber ( a cam ( an oil piston ( an oil chamber ( an oil reservoir ( control means ( the actuating motion of the oil piston comprises an initial part wherein the oil from the oil chamber is directed, according to a state of the control means, either to the opening oil chamber and displaces the valve to open positively, or to the closing oil chamber and displaces the valve to close positively, the actuating motion of the oil piston comprises a final part wherein the oil from the oil chamber is directed to the closing oil chamber and displaces the valve to close positively, the final part of the actuating motion is adequately long to guarantee that at the end of the actuating motion of the oil piston the valve will be closed.