Method for measuring air-fuel ratio
Abstract
Abstract METHOD FOR MEASURING AIR-FUEL RATIO OF COMBUSTIBLE MIXTURE BY ANALYZING EXHAUST GAS FROM ENGINE SUPPLIED WITH MIXTURE COMPRISES STEPS OF COMPARING THERMAL CONDUCTIVITY OF STANDARD GAS WITH THERMAL CONDUCTIVITY OF GAS SAMLE AND THEREAFTER OBTAINING FROM COMPARISON A FIRST VOLTAGE VALUE REPRESENTATIVE OF THE H2 AND CO2 CONTENT OF THE EXHAUST GAS. THERMAL CONDUCTIVITY OF EXHAUST GAS SAMPLE IS THEN COMPARED WITH EXHAUST GAS SAMPLE HAVING NO CO2 CONTENT AND FROM COMPARISON SECOND VOLTAGE VALUE REPRESENTATIVE OF CO2 CONTENT OF EXHAUST GAS SAMPLE IS OBTAINED. SECOND VOLTAGE VALUE IS SUBTRACTED FROM FIRST VOLTAGE VALUE TO THEREBY OBTAIN THIRD VOLTAGE VALUE REPRESENTATIVE OF AIR-FUEL RATIO OF COMBUSTILE MIXTURE. RATIO OF SECOND VOTAGE VALUE TO FIRST VOLTAGE VALUE IS CON- STANT SOMEWHERE BETWEEN LESS THAN TEN AND MORE THAN ONE.
Inventors
- 👤 Hiroshi Matsumoto
- 👤 Kenji Goto
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |