Patent · US Expired

Secondary air system for an internal combustion engine

US6094909A · kind A · utility

29Cited by

6References

16Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Olaf Weber · Bloomfield Hills, US
Holger Paffrath · Ludwigsburg, DE

Key dates

Filing date	Dec 15, 1998
Grant date	Aug 1, 2000
Priority date	—
Expiry date	Dec 15, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A secondary air system for an internal combustion engine (32), including at least one line (14) through which air is blown into the exhaust pipe of the engine, a pump (26) and a drive (27) for the pump (26). In addition an air-feed line (13) is provided through which the secondary air is supplied to the pump (26). The power necessary to drive the pump is provided by the engine (32).

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