Patent · US Expired

Suction pipe for the intake air of internal combustion engines with pressure-relieving sites for pressure valves

US6328011A · kind A · utility

5Cited by

4References

21Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Thomas Jessberger · Asperg, DE
Kinh Toai Pham · Hagen, DE
Herbert Pietrowski · Pleidelsheim, DE

Key dates

Filing date	May 30, 2000
Grant date	Dec 11, 2001
Priority date	—
Expiry date	May 30, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M35/104
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A suction pipe for the intake air of an internal combustion engine, which has a pressure relieving site in the form a bursting geometry 15 for backfiring impacts in the suction pipe. In the event of backfiring, the sites of weakness 17, 18, 24 fail and the bursting geometry is flung into the buffer volume 14, 14a, as a result of which the energy of the backfiring pressure wave is dissipated. As a result, further damage to the suction pipe is prevented, so that the emergency running properties of the internal combustion engine are retained. The proposed pressure-relieving sites have a high functional reliability, independently of the operating state of the internal combustion engine, particularly of the operating temperature.

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