Patent · US Expired

Process for controlling a multiple cylinder internal combustion engine in the cold start and warming up phases

US5930992A · kind A · utility

96Cited by

9References

5Claims

0Family size

Assignee

FEV Motorentechnik GmbH & Co. Kommanitgesellschaft · DE

Inventors

Thomas Esch · Kaarst, DE
Martin Pischinger · Aachen, DE
Wolfgang Salber · Aachen, DE

Key dates

Filing date	Oct 18, 1996
Grant date	Aug 3, 1999
Priority date	—
Expiry date	Oct 18, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A process is disclosed for controlling a multiple cylinder internal combustion engine in which exhaust gases undergo subsequent treatment. To ensure a gaseous exchange, air is supplied to the individual cylinders through inlet devices and exhaust gases are discharged through outlet or exhaust devices. The inlet and outlet devices are independently driven but their opening and closing times may be synchronized. Beginning in the cold start phase until the warming up phase, fuel is supplied to only part of the cylinders that act as an engine and the supply of fuel to the other cylinders is cut off. The other cylinders work then as compressors. The air volume heated in these cylinders by compression flows through the outlet device into the exhaust gas system and reacts with the exhaust gases.

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