Method and computer for controlling the pressure inside a motor vehicle fuel tank
US10399434B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 23, 2016 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jun 23, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03576
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method for controlling the pressure inside a fuel tank of a motor vehicle, the motor vehicle including a fuel vapor vent circuit connecting the tank to a fuel vapor canister, the vent circuit including an isolation valve for isolating the tank and a rollover valve. The pressure control method includes steps of: determining an activation duration required for the isolation valve to transition from a closed state to a fully open state, referred to as the “full opening duration”, when a predefined rollover valve closure risk criterion is satisfied: controlling the isolation valve in repeated activations of respective durations that are shorter than the full opening duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.