Fuel system for a vehicle
US-2024247623-A1 · Jul 25, 2024 · US
Fuel evaporative gas emission suppression system
US2015114361A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015114361-A1 |
| Application number | US-201414527192-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 29, 2014 |
| Priority date | Oct 30, 2013 |
| Publication date | Apr 30, 2015 |
| Grant date | — |
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Abstract
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If a pressure deviation ΔP (amount of pressure decrease) after a first predetermined time period T1 has elapsed since a bypass valve (canister opening/closing valve) is controlled from an opened to closed state by actuating a negative pressure pump when the engine is stopped and a purge valve is opened is less than a first predetermined pressure P1, it is determined that the bypass valve is in an open sticking state, and if the pressure deviation ΔP is not less than the first predetermined pressure P1, it is determined that the bypass valve is not in an open sticking state. Moreover, a pressure deviation ΔP after a second predetermined time T2 has elapsed since the bypass valve is subsequently controlled to be opened decreases by not less than a second predetermined pressure P2, it is determined that the bypass valve 37 is not in a closed sticking state.
First claim
Opening claim text (preview).
What is claimed is: 1 . A fuel evaporative gas emission suppression system, comprising: a communication path configured to communicate between an intake passage and a fuel tank of an internal combustion engine; a canister connected to the communication path and that adsorbs fuel evaporative gas in the communication path; a canister opening/closing valve configured to open and close communication between the communication path and the canister; a purge valve configured to o…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02M25/0836Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US2015114361A1 cover?
- If a pressure deviation ΔP (amount of pressure decrease) after a first predetermined time period T1 has elapsed since a bypass valve (canister opening/closing valve) is controlled from an opened to closed state by actuating a negative pressure pump when the engine is stopped and a purge valve is opened is less than a first predetermined pressure P1, it is determined that the bypass valve is in …
- Who is the assignee on this patent?
- Mitsubishi Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification F02M25/0836. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Apr 30 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).