Systems and methods for intelligent vehicle evaporative emissions diagnostics
US10330051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Dec 25, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/701
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for conducting tests for undesired evaporative emissions on a vehicle fuel system and evaporative emissions system. In one example, a method may include learning routes commonly traveled by the vehicle, including altitude changes and stop durations, and may further include diagnosing the fuel system and evaporative emissions system based on the learned altitude changes in one example, and may include diagnosing the fuel system and evaporative emissions system based on a learned stop duration in another example. By conducting tests for undesired evaporative emissions as a function of learned travel routes, completion rates for tests for undesired evaporative emissions tests may be increased, and the release of undesired evaporative emissions to atmosphere may be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.