| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact variable compression ratio internal combustion engine capable of efficiently burning air fuel mixture in an auxiliary chamber as well as in an main combustion chamber according to an operation state of an engine. SOLUTION: The variable compression ratio engine 10 is provided with: an intake port 16 including an intake valve 17; the auxiliary chamber 30 provided with communicating to the main combustion chamber 14; and an electromagnetic shut off valve opening to establish communication of the main combustion chamber 14 and the auxiliary chamber 30 and closing to shut off communication of the main combustion chamber 14 and the auxiliary chamber 30, also is provided with the auxiliary chamber 30 in a path of an intake port 16, and has the shut off valve 32 arranged in an intake air downstream side of the intake valve 17. Abnormal combustion due to knocking and local lean is inhibited by introducing air fuel mixture into the auxiliary chamber after surely scavenging gas in the auxiliary chamber by intake air. COPYRIGHT: (C)2007,JPO&INPIT
|
