Abnormality detection device of fuel vapor escape prevention system
US10830187B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2020 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Feb 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
At the time of stopping operation of the vehicle, the pressures inside of the fuel tank (5) and inside of the canister (6) detected at every constant time are stored in the storage device. A learned neural network using the pressures inside the fuel tank (5) and inside the canister (6) for each fixed time stored in the storage device and the atmospheric pressure as input parameters of the neural network and using a case where perforation occurs in the system causing fuel vapor to leak as a truth label is stored. At the time of stopping operation of the vehicle, a perforation abnormality causing fuel vapor to leak is detected from these input parameters by using the learned neural network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.