| Patents for F02D 21 - Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas (5,404) | |
|---|---|
| 03/1976 | |
| 03/02/1976 | US3941105 Exhaust gas recirculation for three-valve engine |
| 02/1976 | |
| 02/10/1976 | US3937015 Pleated filter in the exhaust manifold |
| 01/1976 | |
| 01/27/1976 | US3934564 Control valve for exhaust gas recycling apparatus |
| 01/20/1976 | US3933134 Method and apparatus using proportional residual gas storage to reduce NOx emissions from internal combustion engines |