Pressure relief system for diesel exhaust fluid freeze damage mitigation
US10392988B2 · kind B2 · utility
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18Claims
0Family size
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Inventor
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Nov 24, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system for diesel exhaust fluid (DEF) pressure relief for a vehicle that includes a DEF pump assembly in an interior of a DEF storage tank is described. The system includes a DEF shear structure fixed to a top interior portion of the DEF storage tank. The DEF shear structure includes a plurality of expansion channels extending from the top interior portion of the DEF storage tank into stored DEF in the storage tank. When the DEF storage tank experiences a freeze event the plurality of expansion channels have smooth walls configured to guide a frozen DEF away from the DEF pump assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.