EP0065664A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Internal combustion engine with bearing beam structure
Assignee: Nissan Motor Co Ltd
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Filing: 1982-04-29
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Granted: —
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Expires: 2002-04-29
Abstract
Abstract n interna) combustion engine (20) comprises a cylinder block (22) including cylinder barrels (24), and main bearing bulkheads each having a bearing section; main bearing cap sections (46) respectively secured to the bearing bulkheads (30) so that each main bearing cap section (46) and the corresponding cylinder block bearing section (32) associate to constitute a main bearing (48) for rotatably supporting a crankshaft (34); and a bearing beam structure (50) detachably secured to the main bearing cap sections to connect the main bearing cap sections (46) with each other as a single unit, the bearing beam structure (50) including a plurality of beam sections (52, 54) which are disposed parallel with each other and extend along the row of the main bearing cap sections (46), the beam sections (52, 54) being connected with each other, thereby effectively decreasing engine noise while facilitating the handling of the engine parts before assembly.
Inventors
- 👤 Yoshimasa C/O Oppama Plant Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 13:00
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: 10
Claim 1
Independent Claim
138 words
An internal combustion engine (20) comprising: a cylinder block (22) including cylinder barrels (24), and main bearing bulkheads (30) each having a bearing section (32) for a crankshaft (34); main bearing cap sections (46) respectively secured to said bearing bulkheads (30) so that each main bearing cap section (46) and the corresponding cylinder block bearing section (32) associate to constitute a main bearing (48) for rotatably supporting said crankshaft; and a bearing beam structure (50) detachably secured to.said main bearing cap sections (46) to connect said main bearing cap sections with each other as a single unit, said bearing beam structure including a plurality of beam sections (52,54) which are disposed parallelly with each other and extend along the row of said main bearing cap sections, said beam sections (52,54) being connected with each other. (Fig. 4(5, 6))
Claim 2
Dependent Claim
138 words
An internal combustion engine (20) comprising: a cylinder block (22) including cylinder barrels (24), and main bearing bulkheads (30) each having a bearing section (32) for a crankshaft (34); main bearing cap sections (46) respectively secured to said bearing bulkheads (30) so that each main bearing cap section (46) and the corresponding cylinder block bearing section (32) associate to constitute a main bearing (48) for rotatably supporting said crankshaft; and a bearing beam structure (50) detachably secured to.said main bearing cap sections (46) to connect said main bearing cap sections with each other as a single unit, said bearing beam structure including a plurality of beam sections (52,54) which are disposed parallelly with each other and extend along the row of said main bearing cap sections, said beam sections (52,54) being connected with each other. (Fig. 4(5, 6))
Claim 3
Dependent Claim
41 words
An internal combustion engine as claimed in Claim 1, wherein said bearing beam structure beam sections (52,54) are two beam sections which are located parallelly with each other and extend parallelly with the axis of said crankshaft (34). (Fig. 4(5, 6))
Claim 4
Dependent Claim
67 words
An internal combustion engine as claimed in Claim 2, wherein said bearing beam structure (50) includes a plurality of connecting sections (56) which are disposed parallelly with each other to connect said beam sections (52,54) with each other, each connecting section (56) being connected at its opposite end portions with said beam sections (52,54), and disposed perpendicularly relative to said beam sections (52,54). (Fig. 4(5, 6)) .
Claim 5
Dependent Claim
39 words
An internal.combustion engine as claimed in Claim 3, wherein said bearing beam structure beam sections (52,54) are located outside relative to the opposite side ends (S 1 ,S 2 ) of each bearing cap section (46). (Fig. 4(5, 6))
Claim 6
Dependent Claim
64 words
An internal combustion engine as claimed in Claim 4, wherein the opposite side ends of each bearing cap section are formed respectively with vertical planes (S1,S2) which are parallel with each other, the extensions of the vertical planes (S 1 ,S 2 ) of said bearing cap section opposite side ends being between said bearing beam structure two beam sections (52,54). (Fig. 4(5, 6))
Claim 7
Dependent Claim
44 words
An internal combustion engine as claimed in Claim 3, said bearing beam structure connecting sections (56) are located respectively at the positions corresponding to said main bearing cap sections (46), and detachably secured respectively to said main bearing cap sections (46). (Fig. 4(5, 6))
Claim 8
Dependent Claim
62 words
An internal combustion engine as claimed in Claim 6, wherein each bearing beam structure connecting section (56) is formed with bolt holes (56a,56b) which are respectively located at the positions corresponding to the bolt holes (46a,46b) of each bearing cap section (46), through which corresponding holes a bolt (58,60) passes through to be screwed into said cylinder block (22). (Fig. 4(5, 6))
Claim 9
Dependent Claim
29 words
An internal combustion engine as claimed in Claim 1, wherein said cylinder block (22) and said bearing cap sections (46) are made of the same material. (Fig. 4(5, 6))
Claim 10
Dependent Claim
30 words
An internal combustion engine as claimed in Claim 8, wherein said cylinder block (22) and said bearing cap sections (46) are made of light alloy containing aluminum. (Fig. 4(5, 6))
References Cited (Backward Citations)
No citation records indexed.
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