| 摘要 |
PURPOSE:To decrease a maximum quantity of intake air flowing in intake passages and form a Venturi part to a small diameter, by connecting the intake passages to a low load intake port of one cylinder and the different intake passage to a high load intake port. CONSTITUTION:The first intake passage 13 interposed with the first carburetor 11 is connected to a low load intake port 6 of one cylinder F while the second intake passage 4 interposed with the second carburetor 12 is connected to a low load intake port 7 of the other cylinder R. A high load intake port 8 of the cylinder F is connected to the second intake passage 14 through the first control valve 17 opened at a high load while a high load intake port 9 of the cylinder R is connected to the first intake passage 13 through the second control valve 18. In this way, a maximum quantity of intake air flowing in the intake passages is decreased to form a Venturi part to a small diameter, and generation of pulsation can be reduced. |
