Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889100 | Fuel injection control system for multi-cylinder internal combustion engine with feature of improved response characteristics to acceleration enrichment demand | Shinpei Nakaniwa, Seiichi Otani, Toru Hamada, Masanobu Osaki, Yukio Hoshino | 1989-12-26 |
| 4881505 | Electronic learning control apparatus for internal combustion engine | — | 1989-11-21 |
| 4875456 | Self-diagnosis system for auxiliary air control system of internal combustion engine | — | 1989-10-24 |
| 4854287 | Apparatus for learning and controlling air/fuel ratio in internal combustion engine | — | 1989-08-08 |
| 4850326 | Apparatus for learning and controlling air/fuel ratio in internal combustion engine | — | 1989-07-25 |
| 4844026 | Spark ignition timing control system for internal combustion engine with feature of suppression of jerking during engine acceleration | — | 1989-07-04 |
| 4831987 | Setting device of basic fuel injection amount for an internal combustion engine | Shinpei Nakaniwa, Yukio Hoshino, Seiichi Otani, Tadashi Ariga, Shouji Furuhashi | 1989-05-23 |
| 4817572 | Electronically controlled fuel injection device for an internal combustion engine | Shinpei Nakaniwa, Yukio Hoshino, Seiichi Otani, Tadashi Ariga, Shouji Furuhashi | 1989-04-04 |
| 4800857 | Apparatus for learn-controlling air-fuel ratio for internal combustion engine | — | 1989-01-31 |