The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Jan. 29, 1997
David Charles Jay, Va hakyro, FI;
Rolf Prillwitz, Moglingen, DE;
Wartsila Diesel International Ltd OY, Helsinki, FI;
Abstract
An injection valve arrangement for injecting an auxiliary medium into a combustion chamber of a cylinder of an internal combustion engine in order to reduce the concentration of noxious substances in the exhaust gases of the engine comprises a valve body bounding a first chamber into which the pressure medium is continuously fed through a feed duct and an elongated valve member for controlling the feeding of the auxiliary medium from the first chamber into the combustion chamber of the cylinder and being spring-loaded toward a closed position, in which it prevents the injection of the additional medium. The valve body also bounds a second chamber into which the auxiliary medium is fed, and the pressure prevailing in the second chamber urges the valve member toward the closed position. A control valve controls the pressure in the second chamber so that when the control valve opens, the pressure in the second chamber falls and the valve member moves to an open position allowing injection of the auxiliary medium.