Direct injection internal combustion engine

US6571764B1 · kind B1 · utility

Assignee

• AUDI AG · DE

Inventors

• Alfred Ottowitz · Reichertshofen, DE
• Rainer Wurms · Bonn, DE
• Ralf Budack · Ingolstadt, DE
• Thomas Rieger · Ingolstadt, DE
• Murat Serifsoy · Ingolstadt, DE

Key dates

• Filing date: Jun 2, 2001
• Grant date: Jun 3, 2003
• Expiry date: Jun 2, 2021

Classification

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

Abstract

In a direct injection internal combustion engine having per cylinder at least two intake valves 1 mounted side by side, at least one exhaust valve 2, a more or less coaxial ignition device 3, an injection valve 4, and a piston 5 with combustion chamber trough 6, the injection valve 4 being mounted on the intake side, improved mixture preparation and combustion characterized by low fuel consumption and low exhaust emissions are achieved by mounting,the center of the combustion chamber trough 6 in the piston 5 noticeably displaced relative to the axis of the cylinder in the direction of at least one exhaust valve 2, and are achieved in that the boundary wall 7 of the combustion chamber trough 6 extends in projection along the axis of the cylinder between the ignition device 3 and injection valve 4.