| 摘要 |
PROBLEM TO BE SOLVED: To decrease of NOx and increase an output by injecting steam from a steam injection valve 6 for a short time and at a suitable time to a wall surface of a diameter contracted main combustion chamber as well as carrying out combustion by mixing fuel with air in the combustion chamber. SOLUTION: A pair of diameter enlarged pistons 21 are continuously connected to a crankshaft 16, and respective pistons 21 are fitted to a pair of cylinder heads 15 disposed opposing to each other. A fuel injection valve 7B and an ignition device 8 are disposed to be faced to a diameter contracted main combustion chamber 1 partitioned into each cylinder head 15, air injected from an air flow path 9 and fuel injected from a fuel injection valve 7 are agitated and mixed with each other, and ignition combustion is carried out. Steam is injected from an outer periphery of a steam injection valve 6 through a steam supplying-out valve 4 and a steam, reservoir 5 at a suitable time and for high speed and super short time, and a combustion chamber wall surface is cooled to decrease the rate of NOx and increase an output. A turbo supercharger 12 is operated by energy of exhaust delivered from a diameter enlarged combustion chamber 10, and a rotary type supercharger 14 is operated by an electric motor 17 or the like, and intake air is supercharged. |
