Patent · US Active

Method and device for operating an internal combustion engine

US7404394B2 · kind B2 · utility

0Cited by

14References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Mai · Kronberg, DE
Jens Pache · Kelkheim, DE
Matthias Wiese · Aschaffenburg, DE

Key dates

Filing date	Jan 19, 2007
Grant date	Jul 29, 2008
Priority date	—
Expiry date	Feb 3, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M25/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine has an intake duct, which opens into at least one inlet of at least one cylinder. It also has a tank purging valve, which is configured to control the initiation of a tank purging flow into the intake duct at an inlet point upstream of the respective inlet of the respective cylinder. A main path is configured in the intake duct and a recirculation path is configured there with a recirculation control element, a recirculation inlet from the main path into the recirculation path and a recirculation outlet from the recirculation path into the main path. The recirculation outlet is disposed in the main path upstream in relation to the recirculation inlet. A cylinder tank purging fuel mass is determined as a function of an opening angle of the tank purging valve and an opening angle of the recirculation control element.

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