Fuel injection control apparatus for internal combustion engines
Abstract
Abstract THE POSITION OF A POSITIONING MEMBER WHICH CONTROLS THE AMOUNT OF FUEL TO BE INJECTED INTO AN INTERNAL COMBUSTION ENGINE IS DETERMINED BY DRIVING A SIGNAL REPRESENTATIVE OF ENGINE SPEED, MODIFYING THE SIGNAL TO OBTAIN AN OUTPUT REFLECTING ENGINE CHARACTERISTICS, AND THEN CONTROLLING WITH THE MODIFIED SIGNAL THE POSITION OF A CAM, PREFERABLY A THREE-DIMENSIONAL CAM, THE POSITION OF THE CAM BEING ADDITIONALLY CONTROLLED BY THE POSITION OF THE ACCELERATOR FOR THE ENGINE. A SIGNAL IS DERIVED FROM A CAM FOLLOWER, AND THIS SIGNAL IS ADDITIONALLY AFFECTED BY A CORRECTION UNIT CORRECTING FOR CHANGES IN AMBIENT AIR PRESSURE, TEMPERATURE OF THE ENGINE, OR AMBIENT CONDITIONS, OR THE LIKE, SO THAT THE FINAL OUTPUT CONTROLLING THE SETTING OF THE POSITIONED MEMBER WHICH DETERMINES THE AMOUNT OF FUEL INJECTED WILL BE REPRESENTATIVE OF ENGINE CHARACTERISTICS, THE ACCELERATOR POSITION, AND AMBIENT CONDITIONS AS SENSED BY THE CORRECTION UNIT. D R A W I N G
Inventors
- 👤 K Adler
- 👤 H Knapp
- 👤 K Eckert
Bibliographic Details
Claims Analysis
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |