US4467755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine with bearing beam structure
Assignee: Nissan Motor Co Ltd
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Filing: 1982-05-05
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Granted: 1984-08-28
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Expires: 2002-05-05
Abstract
Abstract An internal combustion engine comprises a cylinder block including cylinder barrels, and main bearing bulkheads each having a bearing section; main bearing cap sections respectively secured to the bearing bulkheads so that each main bearing cap section and the corresponding cylinder block bearing section associate to constitute a main bearing for rotatably supporting a crankshaft; and a bearing beam structure detachably secured to the main bearing cap sections to connect the main bearing cap sections with each other as a single unit, the bearing beam structure including a plurality of beam sections which are disposed parallel with each other and extend along the row of the main bearing cap sections, the beam sections being connected with each other, thereby effectively decreasing engine noise while facilitating the handling of the engine parts before assembly.
Inventors
- 👤 Yoshimasa Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:04
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0065; F02F7/008; F02F7/0043; F02F7/0053; F02F2007/0056; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
149 words
An internal combustion engine comprising: a cylinder block including cylinder barrels, and main bearing bulkheads each having a bearing section for a crankshaft; main bearing cap sections respectively secured to said bearing bulkheads so that each main bearing cap section and the corresponding cylinder block bearing section associate to constitute a main bearing for rotatably supporting said crankshaft; and a bearing beam structure detachably secured to said main bearing cap sections to connect said main bearing cap sections with each other as a single unit, said bearing beam structure including a plurality of beam sections which are disposed parallel to each other and extend along a row of said main bearing cap sections, said beam sections being connected with each other, said plurality of beam sections including two beam sections which are located on opposite sides of and spaced from a vertical plane containing an axis of said crankshaft.
Claim 2
Dependent Claim
149 words
An internal combustion engine comprising: a cylinder block including cylinder barrels, and main bearing bulkheads each having a bearing section for a crankshaft; main bearing cap sections respectively secured to said bearing bulkheads so that each main bearing cap section and the corresponding cylinder block bearing section associate to constitute a main bearing for rotatably supporting said crankshaft; and a bearing beam structure detachably secured to said main bearing cap sections to connect said main bearing cap sections with each other as a single unit, said bearing beam structure including a plurality of beam sections which are disposed parallel to each other and extend along a row of said main bearing cap sections, said beam sections being connected with each other, said plurality of beam sections including two beam sections which are located on opposite sides of and spaced from a vertical plane containing an axis of said crankshaft.
Claim 3
Dependent Claim
24 words
An internal combustion engine as claimed in claim 1, wherein said cylinder block and said bearing cap sections are made of the same material.
Claim 4
Dependent Claim
25 words
An internal combustion engine as claimed in claim 2, wherein said cylinder block and said bearing cap sections are made of light alloy containing aluminum.
Claim 5
Dependent Claim
55 words
An internal combustion engine as claimed in claim 1, wherein said bearing beam structure includes a plurality of connecting sections which are disposed parallel to each other to connect said beam sections with each other, each connecting section being connected at opposite end portions with said beam sections, and disposed perpendicularly to said beam sections.
Claim 6
Dependent Claim
29 words
An internal combustion engine as claimed in claim 4, wherein said bearing beam structure beam sections are located outside relative to opposite side ends of each bearing cap section.
Claim 7
Dependent Claim
43 words
An internal combustion engine as claimed in claim 5, wherein the opposite side ends of each bearing cap section are formed, respectively, within vertical planes which are parallel with each other, said vertical planes being between said bearing beam structure two beam sections.
Claim 8
Dependent Claim
38 words
An internal combustion engine as claimed in claim 4, said bearing beam structure connecting sections are located respectively at positions corresponding to said main bearing cap sections, and are detachably secured respectively, to said main bearing cap sections.
Claim 9
Dependent Claim
51 words
An internal combustion engine as claimed in claim 7, wherein each bearing beam structure connecting section is formed with bolt holes which are respectively located at positions corresponding to bolt holes of each bearing cap section, through which corresponding holes a bolt passes through to be screwed into said cylinder block.
References Cited (Backward Citations)
US2997347A
Cited
US3304134A
Cited
GB1328196A
Cited
US4245595A
Cited
US4327679A
Cited
EP0038560A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |