Patent · US Active

Method for determining the retention capacity of fuel vapor filters

US9638647B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

Kautex Textron GmbH & Co. KG · DE

Inventors

Daniel Harms · Siegburg, DE
Volker Treudt · Windeck, DE

Key dates

Filing date	May 23, 2013
Grant date	May 2, 2017
Priority date	—
Expiry date	Apr 27, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01M15/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a method of determining the retention capacity of fuel vapor filters for motor vehicles, wherein a temperature profile of the fuel is recorded on a motor vehicle in a SHED chamber during a temperature cycle. A fuel vapor volumetric flow for a temperature change is calculated from the temperature profile. In a measurement arrangement (1) fuel is evaporated by means of an evaporator (2) and is output by means of a charging pump (9) to a fuel vapor filter (4) disposed in an oven (5). The bleed emissions of the fuel vapor filter (4) are measured at least during the charging.

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