Patent · US Expired

System and method for determining a gradient speed of a shaft driven by an internal combustion engine

US5537322A · kind A · utility

34Cited by

11References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Denz · Stuttgart, DE
Ernst Wild · Oberriexingen, DE
Klaus Boettcher
Georg Mallebrein · Stuttgart, DE
Christian Tischer · Hemmingen, DE

Key dates

Filing date	Sep 6, 1994
Grant date	Jul 16, 1996
Priority date	—
Expiry date	Sep 6, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG01P15/165
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a system and a method for determining the speed gradient dn/dt of a shaft of an internal combustion engine, the speed gradient dn/dt is determined as a function of the third power of the speed and the difference between two segment times in the control device. The speed gradient is only determined in phases which are not time-critical, while segment times are read in or stored only in time-critical phases so that the data required for controlling and regulating the internal combustion engine can be calculated in these time-critical phases independently from the determination of the speed gradient.

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