| 摘要 |
Ignition device, such as a heater plug, igniter plug or heater plug extension, the surfaces which are exposed to the fuel-air mixture being of ceramic or metal, at least a part of said surface being coated with materials which catalyse the cracking process of the hydrocarbons contained in the fuel. The ignition temperature can thereby be lowered by up to 100 DEG C. Said coating consists of at least one oxide from the oxide group with the elements Si, Y, La and Ce or of a mixed-oxide system of said oxides with Al2O3. These basic oxides may also contain at least one further oxide from the alkaline or alkaline-earth metal group, to strengthen the coulomb fields necessary for catalysis; lastly there may also be present at least one d-transition metal oxide, to form complex oxides of the spinell, perowskite or pyrochlore type. |
