Electronic Fuel Injection Throttle Body Assembly
US-2019345905-A1 · Nov 14, 2019 · US
Fuel injector and fuel injection device using the same
US2015034742A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015034742-A1 |
| Application number | US-201414331605-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 15, 2014 |
| Priority date | Jul 30, 2013 |
| Publication date | Feb 5, 2015 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A fuel injector includes (i) a body including a distal end portion forming an injection port, a diameter reduction portion, and a diameter expansion portion, and (ii) a seal member attached to at least the diameter reduction portion of both the diameter reduction portion and the diameter expansion portion. When the body is inserted into an attachment hole communicating with a combustion chamber of an internal combustion engine, the seal member seals between an inner peripheral surface of the attachment hole and an outer peripheral surface of the body. The seal member includes a first taper portion chamfered and provided at an outer periphery of a distal end portion of the seal member in a case where the distal end portion of the seal member is placed at a position relatively close to the injection port.
First claim
Opening claim text (preview).
What is claimed is: 1 . A fuel injector comprising: a body including a distal end portion forming an injection port through which fuel is injected, the body further including a diameter reduction portion and a diameter expansion portion expanding a diameter of the diameter expansion portion from the diameter reduction portion toward a base end portion of the diameter expansion portion opposite to the injection port; and a seal member substantially cylindrical-shaped and attached to at least an outer peripheral surface of the diameter reduction portion, wherein when the body is inserted into an attachment hole communicating with a combustion chamber of an internal combustion engine, the seal member seals between an inner peripheral surface of the attachment hole and an outer peripheral surface of the body, and the seal member includes a first taper portion chamfered and provided at an outer periphery of a distal end portion of the seal member in a case where the distal end portion of the seal member is placed at a position relatively close to the injection port. 2 . The fuel injector according to claim 1 , wherein the seal member further includes a second taper portion which has the same shape as the first taper portion and is provided at an outer periphery of a base end portion of the seal member in a case where the base end portion of the seal member is placed at a position relatively farther from the injection port than the distal end portion of the seal member. 3 . The fuel injector according to claim 1 , further comprising: a hole taper portion chamfered and provided around an end portion of the attachment hole into which the body is inserted, wherein a chamfering angle of the first taper portion is set to be equal to a chamfering angle of the hole taper portion.
Assignees
Inventors
Classifications
using electromagnetic operating means · CPC title
- F02M69/042Primary
Positioning of injectors with respect to engine, e.g. in the air intake conduit (mounting of injectors F02M61/14) · CPC title
sealing arrangements between injector and engine · CPC title
- F02M61/14Primary
Arrangements of injectors with respect to engines; Mounting of injectors · CPC title
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Frequently asked questions
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- What does patent US2015034742A1 cover?
- A fuel injector includes (i) a body including a distal end portion forming an injection port, a diameter reduction portion, and a diameter expansion portion, and (ii) a seal member attached to at least the diameter reduction portion of both the diameter reduction portion and the diameter expansion portion. When the body is inserted into an attachment hole communicating with a combustion chamber…
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification F02M69/042. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Feb 05 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).