Pressure-sensor-integrated glow plug and manufacturing method thereof
US-2015369485-A1 · Dec 24, 2015 · US
Glow plug fitted with combustion pressure detection sensor
US8939121B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939121-B2 |
| Application number | US-201213588092-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 17, 2012 |
| Priority date | Aug 19, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A glow plug in which a convex portion ( 70 ) is formed in an outer peripheral surface ( 10 b ) of a heater ( 10 ) in a part facing an inner peripheral surface ( 137 b ) of a leading end part ( 137 ) of a housing ( 110 ) and interposed in a leading end side annular gap K 1 , so as to maintain a gap with the inner peripheral surface ( 137 b ). A decline in detection accuracy can be prevented to the extent that combustion gas can be received by the leading end ( 72 ) of the convex portion ( 70 ) even if soot clogging should occur.
First claim
Opening claim text (preview).
What is claimed is: 1. A glow plug having a leading front end and an opposing rear end, and including a combustion pressure detection sensor, the glow plug comprising: a housing having a cylindrical shape which houses a heater having a pillar shape, a leading end of the heater protruding from a leading end of the housing; and a sensor that detects the combustion pressure based on displacement of the heater by action of the combustion pressure, the glow plug having an annular g…
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Physics · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F23Q7/001Primary
Mechanical Engineering · mapped topic
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- What does patent US8939121B2 cover?
- A glow plug in which a convex portion ( 70 ) is formed in an outer peripheral surface ( 10 b ) of a heater ( 10 ) in a part facing an inner peripheral surface ( 137 b ) of a leading end part ( 137 ) of a housing ( 110 ) and interposed in a leading end side annular gap K 1 , so as to maintain a gap with the inner peripheral surface ( 137 b ). A decline in detection accuracy can be prevente…
- Who is the assignee on this patent?
- Nishiyuki Kenjiro, Kawakatsu Masahiro, Nakamura Yoshihiro, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification F23Q7/001. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 27 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).