Patent · US Expired

Method for operation of an internal combustion engine running on hydrogen

US7481044B2 · kind B2 · utility

2Cited by

7References

26Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Michael Preis · Königsbrunn, DE
Joachim Bettendorf · Munich, DE
Bernhard Staar · Gauting, DE
Juergen Ringler · Kissing, DE

Key dates

Filing date	Sep 14, 2005
Grant date	Jan 27, 2009
Priority date	—
Expiry date	Sep 14, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method is provided for operating a bivalent internal combustion engine, which may run lean with using a fuel with wide inflammability limits, such as hydrogen, whereby a first lean region close to the stoichiometric air ratio and a second lean region, adjacent to the first in the direction of greater λ valve are defined. The operation in the first lean region is skipped such that operation occurs either in the second lean region or at an approximately stoichiometric air ratio.

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