Patent · US Active

Method and device for operating an internal combustion engine

US7469687B2 · kind B2 · utility

2Cited by

3References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Mai · Kronberg, DE
Jens Pache · Kelkheim, DE
Markus Roth · Schenkenzell, DE
Gerd Rösel · Dresden, DE

Key dates

Filing date	Dec 5, 2006
Grant date	Dec 30, 2008
Priority date	—
Expiry date	Jun 27, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/0406
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

To operate an internal combustion engine subvolumes of the fluid flowing into an intake duct in each instance during a predetermined time period are determined for each period. Tank purging values of a characteristic quantity are determined for each period. The characteristic quantity is representative of a tank purging fuel mass, which flowed through the tank purging valve in each instance during the predetermined time period. The successive subvolumes are added together, starting from the currently determined subvolume, to give a total subvolume, until the total subvolume is greater than or equal to an effective intake duct volume downstream of the tank purging valve.

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