Patent · US Expired

Apparatus for the measured feeding of volatile fuel components to the intake tube of an internal combustion engine

US4901702A · kind A · utility

28Cited by

8References

10Claims

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	Jan 23, 1989
Grant date	Feb 20, 1990
Priority date	—
Expiry date	Jan 23, 2009

Classification

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

Abstract

An apparatus for the temporary storage and controlled feeding of the volatile fuel components situated in the free space of a tank to the intake tube of an internal combustion engine. The apparatus includes a vent line connecting the free space to the atmosphere. In the vent line there is disposed a storage chamber containing an absorption element, as well as a line connecting the storage chamber to the intake tube, which can be shut off by an electromagnetic check valve. Between the check valve and the intake tube there is disposed an auxiliary valve with a control chamber. The auxiliary valve can be closed by a vacuum actuator in dependence upon the pressure difference between the control chamber and the atmosphere.

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