Internal combustion engine
US-2018283317-A1 · Oct 4, 2018 · US
Rotation speed detecting apparatus of internal combustion engine
US11215480B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11215480-B2 |
| Application number | US-201916548297-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 22, 2019 |
| Priority date | Sep 28, 2018 |
| Publication date | Jan 4, 2022 |
| Grant date | Jan 4, 2022 |
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Abstract
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In a rotation speed detecting apparatus of an internal combustion engine having a rotor supported by an end part of the crankshaft, a pulser ring that has a detected body composed of recess-projection teeth and rotates integrally with the rotor, and a detector that detects the rotation speed of the crankshaft by detecting the detected body, the detected body has a detected surface opposed to the detector, and the detected surface is inclined in such a manner as to be located closer to the outside of the crankshaft in the axial direction of the crankshaft as getting more apart from an axis line of the crankshaft in the radial direction. In the detector, an axis line of the detector is inclined with respect to the axis line of the crankshaft in such a manner that the detector is opposed to the detected surface.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rotation speed detecting apparatus of an internal combustion engine, the rotation speed detecting apparatus having: an internal combustion engine having a crankcase that supports a crankshaft; a rotor supported by an end part of the crankshaft in such a manner as to be incapable of rotation relative to the crankshaft; a pulser ring that has a detected body composed of recess-projection teeth and rotates integrally with the rotor; and a detector that detects rotation speed of the crankshaft by detecting the detected body, wherein the detected body has a detected surface opposed to the detector, and the detected surface is inclined in such a manner as to be located closer to an outside of the crankshaft in an axial direction of the crankshaft as getting more apart from an axis line of the crankshaft in a radial direction, in the detector, an axis line of the detector is inclined with respect to the axis line of the crankshaft in such a manner that the detector is opposed to the detected surface, and the rotor has a chamfered part along the detected body at a part opposed to the detected body. 2. The rotation speed detecting apparatus of the internal combustion engine according to claim 1 , wherein the crankcase includes a wall part that covers the rotor from a periphery, and the detector penetrates the wall part and is attached to the wall part. 3. The rotation speed detecting apparatus of the internal combustion engine according to claim 1 , wherein determination of misfire detection of the internal combustion engine is carried out on the basis of information detected by the detector. 4. The rotation speed detecting apparatus of the internal combustion engine according to claim 1 , wherein the detector is disposed inside in the axial direction of the crankshaft relative to the pulser ring, and a detecting part of the detector opposed to the detected surface is inclined in such a manner as to be located closer to the outside of the crankshaft in the axial direction of the crankshaft as getting more apart from the axis line of the crankshaft in the radial direction. 5. The rotation speed detecting apparatus of the internal combustion engine according to claim 1 , wherein the crankcase includes a support wall that pivotally supports the crankshaft, the detector is disposed between the detected body and the support wall, and the detected surface is inclined in such a manner as to get further away from the support wall as getting more apart from the axis line of the crankshaft in the radial direction.
Assignees
Inventors
Classifications
- G01D5/245Primary
using a variable number of pulses in a train · CPC title
delivered by variable reluctance detectors · CPC title
Crankshafts · CPC title
Arrangements of mechanical drive elements · CPC title
by detecting misfire · CPC title
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Frequently asked questions
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- What does patent US11215480B2 cover?
- In a rotation speed detecting apparatus of an internal combustion engine having a rotor supported by an end part of the crankshaft, a pulser ring that has a detected body composed of recess-projection teeth and rotates integrally with the rotor, and a detector that detects the rotation speed of the crankshaft by detecting the detected body, the detected body has a detected surface opposed to th…
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01D5/245. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 04 2022 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).