Patent · US Active

Method and a device for providing lambda control in an internal combustion engine

US7673443B2 · kind B2 · utility

2Cited by

7References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Paul Rodatz · Landshut, DE
Gerd Rösel · Dresden, DE
Hong Zhang · Tegernheim, DE

Key dates

Filing date	Oct 6, 2005
Grant date	Mar 9, 2010
Priority date	—
Expiry date	Jul 6, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/1454
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Method for lambda control in an internal combustion engine with a catalytic converter in an exhaust tract and at least one lambda probe mounted inside the catalytic converter. With this arrangement of the upstream probe there are signal delays which slow down the lambda control. To compensate, the measurement signals from the first lambda probe are applied to a lambda analysis unit which corrects measurement signal delays, and the corrected lambda probe signal is applied to a unit for lambda control. Both lambda probes are connected to a unit for lambda control.

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