AN IGNITION ELECTRODE ARRANGEMENT AND A METHOD FOR ARRANGING IGNITION ELECTRODES FOR AN INTERNAL COMBUSTION ENGINE

摘要

An electrode arrangement and a method of igniting a fuel-air mixture in the compression chamber (20) in a cylinder (4) of an internal combustion engine, particularly an Otto cycle engine where in addition to being delimited by the cylinder wall (12) said compression chamber is also delimited by a piston (6) moveable in said cylinder and by a cylinder head wall (34), said cylinder head carrying a sparking plug (22) that has an electrode (26) attached thereto. The arrangement includes two separate earth electrodes (30, 32), of which the first (30) is fixedly mounted on the top of the piston and the second (32) is fastened in the cylinder head wall (34) that delimits the compression chamber (20).