Patent · US Active

Storage tank for aqueous urea solution in a motor vehicle

US10190458B2 · kind B2 · utility

1Cited by

4References

12Claims

0Family size

Assignee

Kautex Textron GmbH & Co. KG · DE

Inventors

Ibrahim Koukan · Cologne, DE
Holger Luehn · Salzbergen, DE
Nicolai SCHUMACHER · Bonn, DE

Key dates

Filing date	May 27, 2015
Grant date	Jan 29, 2019
Priority date	—
Expiry date	Aug 20, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The invention relates to a storage tank (1) in a motor vehicle for receiving an aqueous urea solution for the SCR of nitrogen oxide in the exhaust gas. The storage tank (1) comprises a tank body which forms a storage volume (2) for the urea solution. The storage tank (1) furthermore comprises a filling pipe for filling the storage volume (2) and means for venting the storage volume (2) during the refuelling, wherein the filling pipe (3) has a filling head (9) at a remote end, and the filling head (9) forms an orifice stub (10). The orifice stub (10) defines an orifice (11) for receiving a fuel pump nozzle. Said orifice stub furthermore has an external thread for receiving a complementary union thread of a refuelling cylinder for refuelling by the gas displacement method. The orifice stub forms at least one secondary air opening when the refuelling cylinder is attached, and therefore, when a refuelling cylinder is attached, a sealing seat is bridged by the refuelling cylinder and refuelling by the gas displacement method is possible even if counterflow venting through the filling tube (3) does not take place.

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