Systems and methods for coordinating engine-off vehicle diagnostic monitors
US10928275B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Nov 18, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Methods and systems are provided for improving completion rates for engine system diagnostics for hybrid electric vehicles. In one example, a method may include in response to fueling of the engine of a hybrid electric vehicle being discontinued, establishing an air flow from an intake to an exhaust of the engine by relying on an electric motor to rotate the engine unfueled, and conducting a plurality of diagnostic monitors that rely on the air flow prior to reactivation of fueling of the engine. In this way, diagnostic monitor completion rates may be improved for hybrid electric vehicles, and fuel economy may be improved by coordinating the plurality of diagnostic monitors to be conducted during times when the engine is not fueled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.