| 摘要 |
PURPOSE:To provide a two-cycle cylinder injection engine which is constituted to advance an injection timing, minimize blow-by of fuel, improve mixture with air in a combustion chamber as much as possible, resulting in improvement of combustion to reduce the generation of hydrocarbon (HC), carbon oxide (CO), and soot. CONSTITUTION:Formation of a two-cycle cylinder injection engine is such that a recessed part 4b is formed in the top part 4a of a piston 4 and a combustion chamber 15 is formed between the top part 4 at the top dead center time of the piston 4 and a cylinder head surface 6a positioned facing the top part, and a cylinder head 6 is provided with a fuel injector 16 through which fuel is directly injected in a combustion chamber 15 and an igniting ignition plug 17. The fuel injection angle theta of the fuel injector 16 is matched with approximately the whole surface of the recessed part 4b of the top part 4a of the piston 4 when the piston 4 is located at a bottom dead center.
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