| 摘要 |
PURPOSE:To enhance the combustion characteristics and reduce noise likely to be generated at the time of low-temp. starting by forming a jet, connecting the main combustion chamber to a convolutional combustion chamber, from a round hole and slits, and by providing a sub-jet in a specific place. CONSTITUTION:At the top of a convolutional combustion chamber 1, a fuel injection valve 5 is installed with its injecting direction facing the center P1 of said combustion chamber 1. The jet 6 is equipped with a uniform profile consisting of a round hole 6a as the major portion situated at the center and a pair of parallel groove-shaped slits 6b in connection to said round hole 6a. The main combuston chamber side 7 of a sub-jet 15 has an opening at the corner part, nearer the periphery of the main cumbustion chamber than the opening of the jet 6, while the convolutional combustion chamber side 1 of said sub-jet 15 has its opening nearer the periphery of the main combustion chamber than the jet 6. This provides formation of perfect mixture gas in the convolutional combustion chamber 1 to ensure improved conbustion characteristics and a reduced noise to be generated at the time of low-temp. starting. |
