Tank venting system for motor vehicles

US5992396A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Erwin Krimmer · Plüderhausen, DE
• Tilman Miehle · Weingarten, DE
• Wolfgang Schulz · Wunstorf, DE
• Manfred Zimmermann · Bad Rappenau, DE
• Andreas Blumenstock · Ludwigsburg, DE

Key dates

• Filing date: Jun 19, 1998
• Grant date: Nov 30, 1999
• Expiry date: Jun 19, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60K2015/03514
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A tank venting system for motor vehicles, having an internal combustion engine supplied from a fuel tank. A filter housing with an adsorption filter, and an air inlet and an air outlet that can be connected to a venting neck of the fuel tank. An air pump device for error diagnosis, which is integrated with a pump housing that has a pump inlet and a pump outlet. To attain a compact design of the tank venting system that is economical in terms of installation space, the pump housing is mounted with the pump outlet oriented coaxially to the air inlet on the filter housing and secured on the filter housing by means of spring-elastic fastening elements. The transition between the pump outlet and the air inlet is sealed off in airtight fashion.