Fuel composition and aging estimation
US10801462B2 · kind B2 · utility
1Cited by
19References
20Claims
0Family size
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Key dates
| Filing date | Feb 20, 2019 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Apr 13, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems are provided for estimating ethanol content in fuel, water content in fuel, and an age of the fuel in a vehicle engine. In one example, a method may include estimating fuel ethanol content, water content, or fuel age based on a resonant frequency (f) of pressure pulsations, a change in fuel rail pressure (δp), and a damping coefficient (α) of pressure pulsations in the fuel rail as estimated after a fuel injection or a pump stroke. One or more engine operating parameters may be adjusted based on the estimated fuel ethanol content, water content, and fuel age.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.