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:
Oct. 29, 1991
Filed:
Sep. 21, 1990
Daniel Paro, Kvevlax, FI;
Oy Wartsila Diesel International Ltd., Helsinki, FI;
Abstract
An improved combustion process for an internal combustion engine including cylinders provided with inlet and outlet valves as well as inlet and outlet ducts. During a suction stroke with the outlet valve closed, fuel is fed into the cylinder through separate feeding valve means for providing a lean fuel/air mixture in the cylinder; during a compression stroke a first additional charge of fuel is fed into the cylinder by use of a considerable over pressure for igniting the lean fuel/air mixture and after ignition of the fuel/air mixture a second additional charge of fuel is fed into the cylinder for increasing the effective mean pressure of the engine. The second additional charge of fuel comprises a substantial part, and for achieving maximum mean effective pressures the main part, of the fuel fed into the cylinder during a working cycle of the process.