Ventilation device for a fuel tank

US6491030B2 · kind B2 · utility

Assignee

• Mannesmann VDO AG · DE

Inventor

• Thomas Zapp · Dortmund, DE

Key dates

• Filing date: Mar 21, 2001
• Grant date: Dec 10, 2002
• Expiry date: Mar 21, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86332
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A ventilation device for a fuel tank, including lines situated outside the fuel tank, which include a line intended for operational ventilation and a line intended for refuelling ventilation. These lines are arranged such that the line intended for operational ventilation is located within the line for refuelling ventilation, so that the line for the operational ventilation is prevented from having direct contact with the environment. This keeps the escape of fuel vapors into the environment at a particularly low level.