Patent · US Expired

Method for injecting fuel during the starting phase of an internal combustion engine

US6880531B2 · kind B2 · utility

4Cited by

7References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Klaus Bayerle · Obertraubling, DE
Steffen Gessner · Regensburg, DE
Harry Schüle · Neunburg vorm Wald, DE

Key dates

Filing date	Nov 15, 2001
Grant date	Apr 19, 2005
Priority date	—
Expiry date	Nov 15, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/042
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

During the starting phase of an internal combustion engine with fuel injection so-called pilot injectors (I) are used to establish a film on the cylinder walls and at the same time to provide an ignitable mixture for the first combustion. At this point in time the cam shaft and the crankshaft are not yet synchronized and the position of the pistons is unknown. The method according to the invention allows determination of the sequence of the pilot injectors (I) depending on the possible relative positions during the stop periods of the internal combustion engine, said positions being known beforehand.

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