| 摘要 |
PURPOSE: To remove three components in the exhaust gas without performing A/F feed back control. CONSTITUTION: An engine 2 is provided with an carburetor 20 and a fuel adjusted in A/F is fed to it. A catalyst 22 is provided in an exhaust port of the engine 2 at a position under the engine 2. The A/F feed back control is not performed by a signal of an oxygen sensor. The catalyst on which noble metal such as Pd is deposited on perovskite type complex oxide as the catalyst 22 or it is introduced into a lattice of a perovskite type complex oxide crystal, is used as the catalyst 22. |
