Variable compression ratio internal combustion engine
US-2015377120-A1 · Dec 31, 2015 · US
US11047273B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11047273-B2 |
| Application number | US-201916509019-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 11, 2019 |
| Priority date | Jul 17, 2018 |
| Publication date | Jun 29, 2021 |
| Grant date | Jun 29, 2021 |
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Official abstract text for this publication.
An oil pan disposed underneath an engine of a motorcycle and configured to reserve engine oil includes a shallow bottom portion and a deep bottom portion formed to extend in a front-rear direction of the motorcycle substantially at a center in a left-right direction of the motorcycle of the shallow bottom portion, and to become deeper than the shallow bottom portion, and in which a space defined in the left-right direction of the motorcycle between both side wall portions of the deep bottom portion that face each other in the left-right direction of the motorcycle is formed to increase as the deep bottom portion extends from a front toward a rear thereof with respect to the motorcycle.
Opening claim text (preview).
The invention claimed is: 1. An oil pan disposed underneath an engine of a motorcycle and configured to reserve engine oil, comprising: a shallow bottom portion; and a deep bottom portion formed to extend in a front-rear direction of the motorcycle substantially at a center in a left-right direction of the motorcycle of the shallow bottom portion and to become deeper than the shallow bottom portion and in which a space defined in the left-right direction of the motorcycle between both side wall portions of the deep bottom portion that face each other in the left-right direction of the motorcycle is formed to continuously increase as the deep bottom portion extends from a front toward a rear thereof with respect to the motorcycle, wherein an exhaust pipe connected to the engine of the motorcycle is disposed below the bottom wall portion of the shallow bottom portion and on a side in the left-right direction of the motorcycle of a side wall portion of the deep bottom portion, and wherein the bottom wall portion of the shallow bottom portion is formed to narrow a space defined in the up-down direction of the motorcycle between the bottom wall portion of the shallow bottom portion and the exhaust pipes as the bottom wall portion of the shallow bottom portion extends from the front to the rear thereof with respect to the motorcycle. 2. The oil pan according to claim 1 , wherein at least a lower wall surface portion with respect to the motorcycle of a front wall portion of the deep bottom portion is formed substantially into an arc shape or substantially into a U-shape when seen from below in which both end portions in the left-right direction of the motorcycle are located further rearwards with respect to the motorcycle than a substantially central portion in the left-right direction of the motorcycle. 3. The oil pan according to claim 1 , wherein two rib portions are provided on a bottom wall portion of the deep bottom portion, the two rib portions protruding downwards with respect to the motorcycle and extending in the front-rear direction of the motorcycle. 4. The oil pan according to claim 1 , wherein a bottom wall portion of the shallow bottom portion is formed to moderately slope downwards from an upper portion to a lower portion thereof with respect to the motorcycle as the bottom wall portion extends from a front toward a rear thereof with respect to the motorcycle.
characterised by used materials · CPC title
Sump drainage devices, e.g. valves, plugs · CPC title
with passages in the wall, e.g. for axles or fluid passages · CPC title
with thermic insulation · CPC title
using lubricating pumps (pumps in general F04; lubricating pumps per se F16N) · CPC title
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