Device for temporarily storing volatile fuel constituents and supplying them at a controlled rate to the intake pipe of an internal combustion engine

US5184591A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Andreas Sausner · Frankfurt am Main, DE
• Sebastian Zabeck · Weinheim, DE

Key dates

• Filing date: Nov 6, 1991
• Grant date: Feb 9, 1993
• Expiry date: Nov 6, 2011

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2025/0845
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A device for temporarily storing the volatile fuel constituents contained in the empty space (11) of a fuel tank (10) and supplying them at a controlled rate to the intake pipe (1) of an internal combustion engine (2). A shut-off valve (8) is accommodated in a line (3) that extends through a volatile fuel constituent absorber (9) to the intake pipe of the engine. A sensor (4) accommodated in the line generates a first signal representing the mass flow. An auxiliary component (6) generates a second signal quantitatively representing the valve position of the shut-off valve and compares the first and second signals. The auxiliary component has at least one accessory means (7) for displaying deviations between the first and second signals.