Fuel system for a vehicle
US-2024247623-A1 · Jul 25, 2024 · US
Internal orifice characterization in leak check module
US9109548B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109548-B2 |
| Application number | US-201313891054-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 9, 2013 |
| Priority date | May 9, 2013 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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Systems and methods for internal orifice characterization in an evaporative leak check module are disclosed. In one example approach, a method comprises operating a pump to draw air from an emission control system through an orifice to obtain a reference pressure, and indicating a leak in response to pressure in the emission control system remaining above a threshold pressure while operating the pump to decrease pressure in the emission control system, where the threshold pressure is based on a coded indication and the reference pressure.
First claim
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The invention claimed is: 1. A method for a vehicle, comprising: operating a pump to draw air from an emission control system through an orifice to obtain a reference pressure; and indicating a leak in response to emission control system pressure remaining above a threshold while operating the pump to decrease the emission control system pressure, where the threshold is based on the reference pressure and a coded indication, stored in a storage medium, of a size of the orifice.…
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- F02M25/0818Primary
Mechanical Engineering · mapped topic
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- What does patent US9109548B2 cover?
- Systems and methods for internal orifice characterization in an evaporative leak check module are disclosed. In one example approach, a method comprises operating a pump to draw air from an emission control system through an orifice to obtain a reference pressure, and indicating a leak in response to pressure in the emission control system remaining above a threshold pressure while operating th…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02M25/0818. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).