Evaporative emissions diagnostics for a multi-path purge ejector system
US10107233B2 · kind B2 · utility
14Cited by
1References
20Claims
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Key dates
| Filing date | Dec 6, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | May 15, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and systems are provided for diagnosing a high load purge line of a boosted engine system for undesired evaporative emissions. In one example, a method for diagnosing the high load purge line includes drawing vacuum in the high load purge line under natural aspiration conditions and concurrently purging a fuel vapor canister. In this way, the high load purge line may be diagnosed for undesired evaporative emissions without disrupting a canister purge schedule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.