Patent · US Expired

Device and method for determining a load signal in an internal combustion engine

US5727526A · kind A · utility

0Cited by

5References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Alfred Kratt · Schwieberdingen, DE
Claus-Dieter Nusser · Schwieberdingen, DE
Markus Lischwe · Mendig, DE

Key dates

Filing date	Apr 4, 1996
Grant date	Mar 17, 1998
Priority date	—
Expiry date	Apr 4, 2016

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/187
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device for determining a load signal indicating the actual air mass per stroke in an internal combustion engine based on signals which indicate the respective instantaneous air flow rate in the intake pipe, these signals being indirectly or directly summed up over a specified angular range of the crankshaft for forming the load signal. In first predetermined ranges of speeds and throttle-valve positions, the load signal serves directly as a computational basis for the quantity of fuel to be injected. In second predetermined ranges, the last value from the first ranges is subjected to a speed-dependent correction and this corrected value is used as a substitute load signal.

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