Exhaust gas cleaning device for internal combustion engines
Abstract
Abstract A SPARK PLUG IS CAUSED TO SPARK AT A POINT IN THE EXHAUST PASSAGEWAY IMMEDIATELY DOWNSTREAM FROM THE EXHAUST PORT OF EACH CYLINDER OF AN ENGINE IMMEDIATELY AFTER FULL CLOSURE OF THE EXHAUST PORT DURING THE COMPRESSION STROKE IN ORDER TO CAUSE COMBUSTION OF SOME FUEL-AIR GAS UNAVOIDABLY BLOWN PAST THE EXAUST PORT IN THE EXHAUST PASSAGEWAY AS CHARGE-LOSS GAS BEFORE FULL CLOSURE OF THE PORT. A SMALL QUANITITY OF SUPPLEMENTARY FUEL-AIR GAS CAN BE SUPPLIED AS PILOT GAS WITH OR WITHOUT SUPPLEMENTAL AIR TO THE SPARK GAP TO FACILITATE AND ENSURE POSITIVE IGNITION AND COMBUSTION. OTHER REFINEMENTS INCLUDE A PRECOMBUSTION CHAMBER AROUND THE SPARK GAP AND CONTROL DEVICES FOR CAUSING THE PILOT GAS TO BE SUPPLIED ONLY WHEN THIS SUPPLY OF PILOT GAS IS ADVANTAGEOUS.
Inventors
- 👤 Satoru Takahashi
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |