Patent · US Expired

Method for operating an internal-combustion engine

US6698402B2 · kind B2 · utility

5Cited by

10References

20Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Herwig Biesinger · Ditzingen, DE
Hans-Jochen Blohm · Weingarten, DE
Markus Schütz · Eßlingen, DE
Hans-Karl Weining · Eßlingen, DE

Key dates

Filing date	Aug 20, 2001
Grant date	Mar 2, 2004
Priority date	—
Expiry date	Aug 20, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02N99/008
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for operating an internal-combustion engine, a fuel/air mixture is fed to a combustion chamber of the internal-combustion engine and is ignited therein. At least for a defined period during the starting and/or warm-up of the internal-combustion engine, at least some of the liquid fuel is replaced with fuel which is in vapor form and is ignited in the at least one combustion chamber of the internal-combustion engine. The fuel which is in vapor form is taken from at least one fuel tank, which is connected to the internal-combustion engine, above a liquid-fuel level and/or from a charcoal canister which is connected to the fuel tank.

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