Patent · US Expired

Method for operation of a direct-injection spark-ignition internal combustion engine

US6176215A · kind A · utility

34Cited by

10References

8Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Bernd Baur · Eßlingen, DE
Peter Hohner · Echterdingen, DE
Gunter Karl · Eßlingen, DE
Roland Kemmler · Stuttgart, DE

Key dates

Filing date	Jul 17, 1998
Grant date	Jan 23, 2001
Priority date	—
Expiry date	Jul 17, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for operation of a direct-injection spark-ignition internal combustion engine operated over large areas of the characteristics map with stratified charge by way of fuel injection during the compression stroke. In order to guarantee reliable mixture ignition and combustion, the method of the present invention provides an ignition system which generates alternating voltage so that high voltage rapidly builds up between the electrodes of a spark plug, and generates ignition sparks with a spark duration that can be defined as a function of operating point.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.