| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylinder injection type spark ignition internal combustion engine for achieving excellent stratified combustion by surely igniting and burning an air-fuel mixture flow formed of fuel flying in a cylinder by a spark plug while mixing with intake air by being injected into the cylinder from a fuel injection valve. SOLUTION: This cylinder injection type spark ignition internal combustion engine ignites and burns the air-fuel mixture flow formed of the fuel flying in the cylinder by the spark plug 2 while mixing with the intake air by being injected from the fuel injection valve. The spark plug has a central electrode 2a and the other electrode 2c having a substantially L-shaped cross section. An ignition gap between the central electrode and the other electrode opens in the three directions. The spark plug is arranged so that the air-fuel mixture flow passes through the ignition gap by passing through openings 22b and 23b in the mutually opposed two directions among the openings. COPYRIGHT: (C)2007,JPO&INPIT
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