Patent US3324711A successfully refreshed from Google Patents.
US3324711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaluation of engine and fuel performance
Assignee: Sinclair Research Inc
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Filing: 1963-12-06
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Granted: 1967-06-13
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Expires: 1983-12-06
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang J Wostl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:28
CPC Classifications
G; G01; G01M; G01M15/00; G01M15/04; G01M15/08; G01L; G01L23/00; G01L23/22; G01L23/221; G01L23/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE METHOD OF EVALUATING THE PERFORMANCE OF A MULTI-CYLINDER SPARK-IGNITION INTERNAL COMBUSTIION ENGINE AND FUEL THEREFOR BY OPERATING SAID ENGINE AT CONDITIONS OF INLET AND DISCHARGE PRESSURE, COMPRESSION RATIO AND FUEL-AIR RATIO SUCH THAT ONLY NORMAL COMBUSTION WILL OCCUR IN SAID CYLINDERS, GENERATING SEPARATE SIGNALS EXTERNAL OF THE ENGINE CORRESPONDING IN AMPLITUDE AND FREQUENCY TO SOUNDS ORIGINATING WITHIN THE RESPECTIVE CYLINDERS OF SAID ENGINE, INCREASING THE SEVERITY OF OPERATION OF SAID ENGINE UNTIL ABNORMAL COMBUSTION OCCURS IN A PLURALITY OF SAID CYLINDERS, SEPARATING FROM THE GENERATED SIGNALS THAT PORTION CORRESPONDING TO ABNORMAL COMBUSTION, SEPARATELY ACCUMULATING A PREDETERMINED PLURALITY OF SIGNALS CORRESPONDING TO DISTINCT ABNORMAL COMBUSTION FOR EACH OF SAID PULRALITY OF CYLINDERS FOR WHICH SAID PREDETERMINED PLURALITY OF SIGNALS CORRESPONDING TO DISTINCT ABNORMAL COMBUSTION ARE ACCUMULATED WHEREBY THE DISTRIBUTION OF SAID SIGNALS IN SAID CYLINDERS WITH RESPECT TO TIME IS OBTAINED.
Claim 2
Independent Claim
141 words
THE METHOD OF EVALUATING THE PERFORMANCE OF A MULTI-CYLINDER SPARK-IGNITION INTERNAL COMBUSTIION ENGINE AND FUEL THEREFOR BY OPERATING SAID ENGINE AT CONDITIONS OF INLET AND DISCHARGE PRESSURE, COMPRESSION RATIO AND FUEL-AIR RATIO SUCH THAT ONLY NORMAL COMBUSTION WILL OCCUR IN SAID CYLINDERS, GENERATING SEPARATE SIGNALS EXTERNAL OF THE ENGINE CORRESPONDING IN AMPLITUDE AND FREQUENCY TO SOUNDS ORIGINATING WITHIN THE RESPECTIVE CYLINDERS OF SAID ENGINE, INCREASING THE SEVERITY OF OPERATION OF SAID ENGINE UNTIL ABNORMAL COMBUSTION OCCURS IN A PLURALITY OF SAID CYLINDERS, SEPARATING FROM THE GENERATED SIGNALS THAT PORTION CORRESPONDING TO ABNORMAL COMBUSTION, SEPARATELY ACCUMULATING A PREDETERMINED PLURALITY OF SIGNALS CORRESPONDING TO DISTINCT ABNORMAL COMBUSTION FOR EACH OF SAID PULRALITY OF CYLINDERS FOR WHICH SAID PREDETERMINED PLURALITY OF SIGNALS CORRESPONDING TO DISTINCT ABNORMAL COMBUSTION ARE ACCUMULATED WHEREBY THE DISTRIBUTION OF SAID SIGNALS IN SAID CYLINDERS WITH RESPECT TO TIME IS OBTAINED.
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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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |