Patent · US Expired

Apparatus for generating a time duration signal

US4653015A · kind A · utility

1Cited by

6References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rolf Daumer · Laichingen, DE
Winfried Klotzner · Maulbronn, DE
Manfred Schenk · Fellbach, DE

Key dates

Filing date	Mar 15, 1985
Grant date	Mar 24, 1987
Priority date	—
Expiry date	Mar 15, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH03K23/665
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An apparatus including a computer for generating a time duration signal is proposed, intended in particular for controlling fuel metering or ignition processes in internal combustion engines, wherein the time duration signal is formed in accordance with the formula EQU ti=(R+K.multidot.Z)/fcl where Z is the counting range of a counter associated with the computer, k is the number of counting processes, fcl is the counting frequency and R is a remainder value. In accordance with the above formula, the counter first counts downward from this remainder value R and then, for a desired number k of counting processes, runs through the total counting range. In the case of an 8-bit counter, for instance, this counting range value is 256.

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