US4888576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for detecting the level of engine oil of an engine
Assignee: Honda Motor Co Ltd
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Filing: 1989-04-12
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Granted: 1989-12-19
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Expires: 2009-04-12
Abstract
Abstract Method and system for detecting a level of an engine oil of an engine include an operation for detecting a time duration in which the engine is operating. When the engine operation has continued for more than a predetermined time period, and the engine is stopped subsequently, the oil level is detected after the elapse of a second predetermined time period in which the engine is stopped. By this feature, the engine oil level is detected very accurately.
Inventors
- 👤 Shin'ichi Kubota
- 👤 Hideyo Miyano
- 👤 Hiromitsu Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:18
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/18; F01M1/20; F01M11/00; F01M11/10; F01M11/12; G; G01; G01F; G01F23/00; G01F23/30; G01F23/64; G01F23/72; G01F23/74; G01F23/80; F16; F16N; F16N2260/00; F16N2260/02; F16N2260/04; F16N2260/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A system for detecting insufficiency of an engine oil of an engine having an engine oil supply passage, comprising: pressure detection means for detecting whether or not an engine oil pressure in said engine oil supply passage is lower than a predetermined pressure level; alarming means connected to said pressure detection means, for generating an alarm when it is detected by said pressure detection means, after a starting of the engine, that said engine oil pressure is lower than the predetermined pressure level; and control means connected to said pressure detection means and said alarming means, for operating said alarming means for a predetermined time period when it is detected by said pressure detection means, upon starting of the engine, that said engine oil pressure is equal to or higher than the predetermined pressure level, thereby to indicate that the pressure detection means is operating properly and the engine oil pressure is high enough.
Claim 2
Independent Claim
154 words
A system for detecting insufficiency of an engine oil of an engine having an engine oil supply passage, comprising: pressure detection means for detecting whether or not an engine oil pressure in said engine oil supply passage is lower than a predetermined pressure level; alarming means connected to said pressure detection means, for generating an alarm when it is detected by said pressure detection means, after a starting of the engine, that said engine oil pressure is lower than the predetermined pressure level; and control means connected to said pressure detection means and said alarming means, for operating said alarming means for a predetermined time period when it is detected by said pressure detection means, upon starting of the engine, that said engine oil pressure is equal to or higher than the predetermined pressure level, thereby to indicate that the pressure detection means is operating properly and the engine oil pressure is high enough.
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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) | 1992-12-18 | 1993-06-19 | 1993-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-18 | 1997-06-19 | 1997-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-18 | 2001-06-19 | 2001-12-19 | $7700.00 | Window Closed / Lapsed |