Apparatus for distribution of fuel from an injection nozzle with respect to a piston in an air compressing internal combustion engine with direct fuel injection

US4338898A · kind A · utility

Assignee

• Audi NSU Auto Union Aktiengesellschaft · DE

Inventors

• Richard C. Bauder · Neckarsulm, DE
• Peter Will · Gomaringen, DE

Key dates

• Filing date: Aug 10, 1978
• Grant date: Jul 13, 1982
• Expiry date: Aug 10, 1998

Classification

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

Abstract

In an air compressing, internal combustion engine with direct fuel injection, a rotation-symmetrical combustion chamber is positioned in a piston. Combustion air circulates around the longitudinal axis of the combustion chamber at the moment of fuel injection. An injection nozzle is provided from which the fuel is injected in at least two fuel jets into the combustion chamber. The engagement points of the fuel jets on the circumferential wall of the combustion chamber are evenly distributed over said wall. In addition, the engagement points are in different planes disposed normal to the longitudinal axis of the combustion chamber while being spaced from each end thereof. In one embodiment, the injection nozzle is coaxially disposed and emits three fuel jets, the engagement points of which are located in different planes evenly spaced from one another. In another embodiment the injection nozzle is offset with respect to the axis of the combustion chamber with the fuel jets being of substantially equal length. In a further embodiment, at least four fuel jets are emitted from a coaxially disposed injection nozzle with the engagement points of oppositely arranged pairs of fuel jets bei…