Method of burning applied-ignition fuels in an air-compressing direct-injection internal combustion engine

US4278057A · kind A · utility

Assignee

• Maschinenfabrik Augsburg-Nurnberg · DE

Inventors

• Alfred Urlaub · Nuremberg, DE
• Franz Chmela · Graz, AT

Key dates

• Filing date: Dec 15, 1978
• Grant date: Jul 14, 1981
• Expiry date: Dec 15, 1998

Classification

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

Abstract

A method of burning fuels ignited by applied-ignition in an air-compressing direct injection internal combustion engine according to which the fuel is, preferably in the form of a jet, sprayed onto the wall of the combustion chamber having the shape of a body of revolution with the major portion of the fuel being deposited in the form of a film to be gradually removed in the form of vapors by and mixed with the air admitted and performing a rotary motion. An ignition device provided at the upper dead center position of the piston projects into the combustion chamber in the vicinity of the injection nozzle opening arranged near the combustion chamber edge between the free fuel jet penetrating the combustion chamber on the one hand and the combustion chamber wall on the other hand. The pressure level in the high pressure section of the injection system and thus the rate of fuel injection into the cylinder is selected to lie between 0.7 and 1.3 per degree of crank angle times liter stroke volume. Furthermore, the fuel injection is so extended that the fuel impingement point at the start of the injection is just still at the upper end of the combustion chamber wall and in the upper dea…