Patent · US Active

Procedure and control unit for operating a self-igniting Otto engine

US8532909B2 · kind B2 · utility

0Cited by

4References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andre F. Casal Kulzer · Eppelheim, DE
Roland Karrelmeyer · Bietigheim-Bissingen, DE
Christina Sauer · Memmingen, DE

Key dates

Filing date	Sep 9, 2010
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Dec 15, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Suggested is a procedure for operating a self-igniting Otto engine (OM) with at least one inlet valve (14), with one or several variably controllable outlet valves (15), with a sensor (21) for a continuous detection of an air-fuel-ratio (λ) of the Otto engine (OM) and with a sensor (22) for detecting an engine speed n of the Otto engine (OM), whereby the fuel is directly injected into at least one combustion chamber (10) and whereby the Otto engine (OM) is operated in such a way, that a desired combustion focus (MFB50%set) is adjusted. The procedure is thereby characterized, in that the self-igniting moment of the fuel is influenced by an injection moment depending on a combustion focus (MFB50%set). An independent claim relates to a control unit that is customized for controlling the process of the procedure.

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