Patent · US Expired

Exhaust-gas recycling device for an internal-combustion engine

US5067470A · kind A · utility

3Cited by

5References

2Claims

0Family size

Assignee

Mercedes-Benz Group AG · DE

Inventors

Detlef Panten · Bad Marienberg, DE
Dirk Naber · Stuttgart, DE
Franz Bender · Wissen, DE

Key dates

Filing date	Oct 18, 1990
Grant date	Nov 26, 1991
Priority date	—
Expiry date	Oct 18, 2010

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2026/002
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an exhaust-gas recycling device for internal-combustion engines, especially diesel engines, in which the exhaust-gas recycling quantity is controlled as a function of the engine running via an exhaust-gas recycling valve mounted in the exhaust-gas recycling line, it is to be possible to regulate the exhaust-gas recycling flow quantity independently of flow resistances changing in the fresh-gas intake and exhaust-gas lines. For this purpose, changes of flow resistance in the fresh-gas intake and exhaust-gas lines are fed as additional pressure control signals to the exhaust-recycling valve. A change of flow resistance in the exhaust-gas line can occur particularly as a result of a soot burn-off filter which is installed there an on which the soot is burnt off at irregular time intervals.

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