Method and system for vacuum generation
US-9108607-B2 · Aug 18, 2015 · US
Vacuum-actuated wastegate
US9677461B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9677461-B2 |
| Application number | US-201514793638-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 7, 2015 |
| Priority date | Nov 16, 2012 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Embodiments for vacuum generation are provided. In one example, a method for an engine including a turbocharger having a compressor driven by a turbine comprises generating vacuum via exhaust flow through an ejector, and applying vacuum from the ejector to a wastegate actuator. In this way, vacuum produced via high-pressure exhaust resulting from boosted engine operation may be used to actuate the wastegate valve.
First claim
Opening claim text (preview).
The invention claimed is: 1. A system for an engine, comprising: a compressor positioned in an intake passage of the engine and coupled to a turbine positioned in an exhaust passage of the engine; an ejector positioned in an engine exhaust flow path, the ejector having an inlet positioned in the exhaust flow path upstream of the turbine and an outlet positioned in the intake passage upstream of the compressor; a wastegate valve of the turbine actuated by a vacuum actuator; and a vacuum conduit coupling the ejector to the vacuum actuator. 2. The system of claim 1 , further comprising a second ejector positioned across a throttle and fluidically coupled to the vacuum conduit. 3. The system of claim 1 , further comprising a third ejector positioned across the compressor and fluidically coupled to the vacuum conduit. 4. The system of claim 1 , further comprising a vent line coupling the vacuum conduit to the intake passage upstream of the compressor. 5. The system of claim 4 , further comprising a vent valve positioned in the vent line and a controller including instructions to adjust the vent valve based on desired boost pressure. 6. A system for an engine, comprising: a compressor positioned in an intake passage of the engine and coupled to a turbine positioned in an exhaust passage of the engine; an ejector positioned in an engine exhaust flow path; a wastegate valve of the turbine actuated by a vacuum actuator; a vacuum conduit coupling the ejector to the vacuum actuator; and a vent line coupling the vacuum conduit to the intake passage upstream of the compressor. 7. The system of claim 6 , further comprising a second ejector positioned across a throttle and fluidically coupled to the vacuum conduit. 8. The system of claim 6 , further comprising a third ejector positioned across the compressor and fluidically coupled to the vacuum conduit. 9. The system of claim 6 , further comprising a vent valve positioned in the vent line and a controller including instructions to adjust the vent valve based on desired boost pressure.
Assignees
Inventors
Classifications
Improving ICE efficiencies · CPC title
characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber · CPC title
Cross-Sectional Technologies · mapped topic
Supercharged engines · CPC title
for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9677461B2 cover?
- Embodiments for vacuum generation are provided. In one example, a method for an engine including a turbocharger having a compressor driven by a turbine comprises generating vacuum via exhaust flow through an ejector, and applying vacuum from the ejector to a wastegate actuator. In this way, vacuum produced via high-pressure exhaust resulting from boosted engine operation may be used to actuate …
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02B37/183. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 13 2017 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).