Patent US4468950A successfully refreshed from Google Patents.
US4468950A
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US
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Engine vibration transmission structure
Assignee: Nissan Motor Co Ltd
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Filing: 1982-11-17
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Granted: 1984-09-04
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Expires: 2002-11-17
Abstract
Abstract A structure for use in an internal combustion engine for providing shortened vibration channels through which vibratory forces within engine cylinders are transmitted to a knock sensor attached to the engine on its engine block outer wall. The structure includes a plurality of ribs each extending through a cooling passage between the engine block outer wall and corresponding one of cylinder walls.
Inventors
- 👤 Kazuhiro Ishigami
- 👤 Haruo Yuzawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:57
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02B; F02B77/00; F02B77/08; F02B77/085; G; G01; G01L; G01L23/00; G01L23/22; G01L23/221
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
A structure for use in a multi-cylinder internal combustion engine including an engine block having an engine block outer wall, a plurality of cylinder walls each defining therein a cylinder, a cooling passage defined between said engine block outer wall and said cylinder walls, and a knock sensor attached on said engine block outer wall for sensing vibratory forces within said engine and translating the sensed vibratory forces into a voltage signal, said structure comprising a plurality of ribs each extending through said cooling passage between said engine block outer wall and a corresponding one of said cylinder walls to provide a shortened vibration channel through which vibratory forces within the associated cylinder are transmitted to said knock sensor, said ribs being located to substantially equalize the length of said shortened vibration channels extending from said respective cylinder walls to said knock sensor.
Claim 2
Dependent Claim
143 words
A structure for use in a multi-cylinder internal combustion engine including an engine block having an engine block outer wall, a plurality of cylinder walls each defining therein a cylinder, a cooling passage defined between said engine block outer wall and said cylinder walls, and a knock sensor attached on said engine block outer wall for sensing vibratory forces within said engine and translating the sensed vibratory forces into a voltage signal, said structure comprising a plurality of ribs each extending through said cooling passage between said engine block outer wall and a corresponding one of said cylinder walls to provide a shortened vibration channel through which vibratory forces within the associated cylinder are transmitted to said knock sensor, said ribs being located to substantially equalize the length of said shortened vibration channels extending from said respective cylinder walls to said knock sensor.
Claim 3
Dependent Claim
17 words
The structure of claim 1, wherein said ribs are located symmetrically with respect to said knock sensor.
Claim 4
Dependent Claim
40 words
The structure of claim 2, wherein said engine has four cylinders in an in-line relationship and where said ribs associated with outer two cylinders and said respective adjacent ribs associated with inner two cylinders are located close to each other.
References Cited (Backward Citations)
US2334731A
Cited
US2608961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |