Internal combustion engine exhaust gas emission control apparatus
Abstract
Abstract A VALVE UNIT CONTROLS THE FLOW OF EXHAUST GASES EITHER DIRECTLY TO A CATALYTIC CONVERTER OR INDIRECTLY THROUGH A COOLING LOOP TO A CATALYTIC CONVERTER AND INCLUDES A PAIR OF PARALLEL TANGENTIALLY DISPOSED CONDUITS. THE INLET OF ONE CONDUIT RECEIVES EXHAUST GASES FROM THE ENGINE, THE OUTLET OF THE OTHER CONDUIT DISCHARGES EXHAUST GASES TO THE CONVERTER, AND A COOLING LOOP CONNECTS THE OUTLET OF THE ONE CONDUIT TO THE INLET OF THE OTHER CONDUIT. AN OPENING IN THE PARTITION BETWEEN THE CONDUITS JOINS THE CONDUITS INTERMEDIATE THEIR INLETS AND OUTLETS. A VALVE MEMBER CONTROLS FLOW TO ALTERNATIVELY DIRECT EXHAUST FLOW EITHER FROM THE INLET OF THE ONE CONDUIT TO ITS OUTLET AND THROUGH THE COOLING LOOP OR FROM THE INLET OF THE ONE CONDUIT THROUGH THE OPENING TO THE OUTLET OF THE OTHER CONDUIT.
Inventors
- 👤 R Weber
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |