Patent · US Expired

Device for the metered supplying of fuel vapor into the intake pipe of a combustion engine

US4953514A · kind A · utility

26Cited by

11References

12Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Bernd Beicht · Groß-Umstadt, DE
Reinhard Tinz · Masserberg, DE
Joachim Heinemann · Weinheim, DE

Key dates

Filing date	Sep 8, 1989
Grant date	Sep 4, 1990
Priority date	—
Expiry date	Sep 8, 2009

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2025/0845
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device for the temporary storing and metered supplying of volatile fuel components present in the free space 22 of a fuel tank system 15 into the intake pipe 1 of a combustion engine 2. The device includes a deaeration pipe 25 which connects the free space 22 with the atmosphere 23 and in which a storage chamber 18 including an absorptive element is disposed. A pipe 20 connects the storage chamber 18 with the intake pipe and can be closed by means of an electromagnetic stop valve 13. An auxiliary valve 21 including a control chamber 14 which can be closed by means of a vacuum controller is disposed between the stop valve 13 and the intake pipe 1. A bypass 4 having an adjustable cross section is provided parallel to the auxiliary valve 21.

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