Patent · US Expired

Method and arrangement for adjusting fuel for emergency operation

US5150698A · kind A · utility

2Cited by

1References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rolf Kohler · Schwieberdingen, DE
Alfred Kratt · Schwieberdingen, DE
Klaus Franzke · Leonberg, DE

Key dates

Filing date	Apr 15, 1991
Grant date	Sep 29, 1992
Priority date	—
Expiry date	Apr 15, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/266
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method is disclosed for adjusting the amount of fuel to be supplied to an internal combustion engine in the case of non-idling operation even when the load signal fails. A plurality of emergency injection times are used which are modified with the manipulated variable of a lambda controller so that an injection time period is associated with each emergency injection time. The injection time periods are arranged such that they cover essentially all the injection times which can occur during the operation of an internal combustion engine. In the method, the lambda control remains switched on and the point at which control is to occur is found by running through the injection time periods. An arrangement for carrying out the method is also disclosed.

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