Method of operating an air-compressing, self-igniting internal combustion engine

US4368702A · kind A · utility

Assignee

• Klockner-Humboldt-Deutz AG · DE

Inventors

• Gerhard Finsterwalder · Bensberg, DE
• Jakob Saftig · Cologne, DE

Key dates

• Filing date: Jan 9, 1980
• Grant date: Jan 18, 1983
• Expiry date: Jan 9, 2000

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 and apparatus for operating an air-compressing, self-igniting combustion machine or engine, for liquid fuels, which has a combustion chamber depression, in the piston, into which fuel is sprayed or injected essentially centrally, preferably in a direction toward the depression wall, and in which the combustion air rotates at the time of injection. Oxygen-containing fuel that is reluctant to ignite is injected through an injection device into the combustion chamber depression, and an ignitible fuel is sprayed or injected through a second injection device, with an overlap in the injection times of the ignitible fuel and the oxygen-containing fuel that is reluctant to ignite. Ignition of the oil fuel, gas oil or Diesel fuel starts before injection of the oxygen-containing fuel that is reluctant to ignite. After approximately 2/3 of the injection time of the Diesel fuel, there begins the injection of the oxygen-containing fuel which is reluctant to ignite. During cold starting, only Diesel fuel is injected in a quantity sufficient for cold starting, until attaining a low idling speed. The volume ratio of Diesel fuel to the oxygen-containing fuel reluctant to ignite is approxim…