Internal combustion engine and method for operating an internal combustion engine

US6799558B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Henry Gmelin · Stuttgart, DE
• Eberhard Holder · Eßlingen, DE
• Roland Kemmler · Stuttgart, DE
• Martin Matt · Weingarten, DE
• Ralf Woerner · Weingarten, DE
• Wolf Zimmermann · Erbach, DE

Key dates

• Filing date: Dec 2, 2002
• Grant date: Oct 5, 2004
• Expiry date: Feb 8, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M69/462
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal combustion engine having one injection valve (3) per cylinder and at least one additional port injector (5) for injecting fuel into combustion air which is fed to the cylinders (2) in the intake tract (4). The port injector (5) havs two supply inlets (10, 11) which can be closed off. A control unit (8) determines the quantity of fuel which is to be delivered as a function of the operating state of the internal combustion engine (1). Separately provided starting fuel is delivered by the port injector (5) during the warm-up phase of the internal combustion engine.