Spark-ignition piston combustion engine with direct fuel injection

US6325042A · kind A · utility

Assignee

• FEV MOTORENTECHNIK GMBH · DE

Inventors

• Michael Grigo · Stolberg, DE
• Oliver Richarz · Linnich, DE
• Joachim Altdorf · Cologne, DE
• Christoph Bollig · Stolberg, DE
• Kurt Imren Yapici · Eschweiler, DE

Key dates

• Filing date: Feb 17, 2000
• Grant date: Dec 4, 2001
• Expiry date: Feb 17, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal combustion engine includes a plurality of cylinders defining combustion chambers each having a roof provided in the cylinder head. Each roof is composed of first and second inclined roof surfaces meeting in a ridge line. Two gas intake openings terminate in respective free edges on the first roof surface and at least one gas exhaust opening terminates in a free edge on the second roof surface. Respective gas exchange valves are seatable in the gas intake and gas exhaust openings. A fuel injection nozzle and a spark plug are supported in the cylinder head in a region of the roof. The first roof surface has, adjacent the fuel injection nozzle, a shoulder covering a terminal edge of the cylinders and extending into each combustion chamber. The shoulder has a front face transverse to the nozzle axis. The free edge of the gas intake openings intersects the ridge line.