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. 25, 1988
Filed:
Dec. 07, 1987
Franz Schweinzer, Graz, AT;
Wolfgang Cartellieri, Graz, AT;
Abstract
In a valve-controlled compression-ignition engine with direct fuel injection and an intake passage inducing the inflowing air to rotate around the cylinder axis, an ideal combustion system has been found, combining the advantages of a diesel engine with direct fuel injection and an open combustion recess and those of a diesel engine with a pre-combustion or swirl chamber, while eliminating the main disadvantages of these two basic types. According to the proposals put forward by this invention the restricted passage or throat in the center area of the combustion chamber is bounded by means of a rotationally symmetric center part, whose lower end forms part of the toroidal combustion chamber, and whose top remains slightly below the fuel jet at the upper dead center of the piston, and which constitutes the inner boundary of the narrow ring-shaped scavenge passage leading from the combustion recess to the cylindrical throat, or rather to the cylinder itself.