US4903646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-type cylinder block of internal combustion engine
Assignee: Nissan Motor Co Ltd
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Filing: 1989-04-04
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Granted: 1990-02-27
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Expires: 2009-04-04
Abstract
Abstract A V-type cylinder block of internal combustion engine is disclosed, which provides two angularly disposed cylinder banks each having a cylinder row of cylinders. A plurality of ribs rise generally from head bolt hole portions defined between two cylinders adjacent each other, are provided between two cylinder rows for interconnecting wall portions of the cylinder rows and intersect at the middle of the cylinder rows for forming intersecting points. At the intersecting points of the plurality of ribs are disposed fixing portions of knocking sensors for detecting an engine knocking.
Inventors
- 👤 Shunichi Minagawa
- 👤 Hiroaki Kuzuoka
- 👤 Hitoshi Nakamura
- 👤 Etsuo Ogami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:08
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0002; F02F7/0012; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B77/00; F02B77/08; F02B77/085; F02B2075/1804; F02B2075/1832; F02F7/006; F02F2007/0063; F02F2200/00; F02F2200/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A V-type cylinder block of internal combustion engine, comprising: two angularly disposed cylinder banks each having a row of cylinders; a plurality of ribs, said plurality of ribs rising generally from head bolt hole portions defined between two cylinders adjacent each other, said plurality of ribs being provided between said two cylinder banks for interconnecting wall portions of said cylinder banks, said plurality of ribs intersecting at the middle of said cylinder rows for forming intersecting points.
Claim 2
Dependent Claim
77 words
A V-type cylinder block of internal combustion engine, comprising: two angularly disposed cylinder banks each having a row of cylinders; a plurality of ribs, said plurality of ribs rising generally from head bolt hole portions defined between two cylinders adjacent each other, said plurality of ribs being provided between said two cylinder banks for interconnecting wall portions of said cylinder banks, said plurality of ribs intersecting at the middle of said cylinder rows for forming intersecting points.
Claim 3
Dependent Claim
34 words
A V-type cylinder block of internal combustion engine according to claim 1, wherein at said intersecting points of said plurality of ribs are disposed fixing portions of knocking sensors for detecting an engine knocking.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |