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Method for Diagnosing Leaks Downstream of The Purge Flow Control Orifice
| Content Provider | The Lens |
|---|---|
| Abstract | A vapor purge system for an engine, includes a purge valve having a housing including an input port in communication with a purge canister and including an output port in communication with an intake system component defining a first bore portion receiving the output port with a first seal member disposed therebetween. The intake system component includes a second bore portion receiving a housing portion of the purge valve with a second seal member disposed therebetween. The first and second seal members are spaced such that when the housing is pulled away from the intake system component and the first seal member is out of engagement between the first bore and the output port, the second seal member can remain in engagement so that a diagnostic module can diagnose detachment of the purge valve from the intake system before any hydrocarbon vapor can be released into the atmosphere. |
| Related Links | https://www.lens.org/lens/patent/012-074-427-281-241/frontpage |
| Language | English |
| Publisher Date | 2017-09-05 |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |
| Jurisdiction | United States of America |
| Date Applied | 2016-04-27 |
| Agent | Harness, Dickey & Pierce, P.l.c. |
| Applicant | Gm Global Tech Operations Llc |
| Application No. | 201615140439 |
| Claim | A vapor purge system for an internal combustion engine, comprising: a purge canister; a purge valve having a housing including an input port in communication with the purge canister and including an output port in communication with an intake system; and an intake system component defining a first bore portion receiving the output port with a first seal member disposed therebetween, the intake system component further including a second bore portion receiving a housing portion of the purge valve with a second seal member disposed therebetween, wherein the first and second seal members are positioned such that when the housing is pulled away from the intake system component and the first seal member is out of engagement between the first bore and the output port, the second seal member can remain in engagement between the second bore portion and the housing portion of the purge valve, so that a disconnect or other leak condition at the output port can be detected without any leakage to the atmosphere. The vapor purge system for an internal combustion engine according to claim 1 , further comprising a control module for controlling opening of the purge valve. The vapor purge system for an internal combustion engine according to claim 2 , further comprising a pressure sensor disposed between a pump and the purge valve, the pressure sensor providing a pressure signal to the control module for diagnosing whether the purge valve is detached from the intake system component. A vapor purge system for an internal combustion engine, comprising: a purge canister; a purge valve having a housing including an input port in communication with the purge canister and including an output port; and an intake system component defining a first bore portion receiving the output port; a control module for controlling opening of the purge valve; a pressure sensor disposed between a pump and the purge valve, the pressure sensor providing a pressure signal to the control module, the control module diagnosing whether the purge valve is detached from the intake system component by activating the pump when the purge valve is closed and determining whether the pressure increases as expected if the purge valve were properly connected. |
| CPC Classification | SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |
| Examiner | Hai Huynh |
| Extended Family | 094-767-338-491-761 112-068-575-178-398 171-500-603-028-195 012-074-427-281-241 146-562-679-608-193 057-431-703-133-305 |
| Patent ID | 9752539 |
| Inventor/Author | Burleigh Darrell W Quelhas Sergio Staat Lawrence A Swartz Kenneth C |
| IPC | F02M33/04 F02M25/08 |
| Status | Active |
| Owner | Gm Global Technology Operations Llc |
| Simple Family | 094-767-338-491-761 112-068-575-178-398 171-500-603-028-195 012-074-427-281-241 146-562-679-608-193 057-431-703-133-305 |
| CPC (with Group) | F02M25/08 F02M25/0809 F02M25/0872 F02M25/0836 F02M25/0818 F02M2025/0845 F02M25/0854 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent/New European patent specification (amended specification after opposition procedure) |
