Patent · US Expired

Fuel injection system for an internal combustion engine, having compensation for changing dynamic operating conditions

US5101795A · kind A · utility

6Cited by

4References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Hirschmann · Leonberg, DE
Erich Junginger · Stuttgart, DE
Eberhard Schnaibel · Hemmingen, DE

Key dates

Filing date	Sep 17, 1990
Grant date	Apr 7, 1992
Priority date	—
Expiry date	Sep 17, 2010

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/10
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection system for an internal combustion engine of the type wherein the lengths of fuel injection pulses (t.sub.i) are based on engine load signals (TL) developed from a measurement of intake manifold pressure (p) and wherein compensation is provided for the fuel injection signals during transitions between different dynamic operating conditions. Transition compensation for the inlet manifold pressure values representative of engine load is achieved by modifying the pressure values in dependence upon incremental pressure differences (.DELTA.p). The pressure difference values (.DELTA.p) used for this purpose can themselves be modified by other engine-dependent factors (F.sub.1, F.sub.2) when the measured incremental manifold pressure differences (.DELTA.p) exceed predetermined thresholds.

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