| 摘要 |
PURPOSE:To shorten the turbo lag in acceleration and improve the acceleration responsiveness by throttling a blower passage in low load and low speed operation and by opening the blower passage and bypass-releasing the supercharge gas in low load and high speed operation. CONSTITUTION:In low load and low speed operation, a throttle valve 21 is throttled within a range not exceeding a surge line, and when a bypass valve 20 is opened, a bypass passage 19 is opened, and the quantity of intake which becomes short because of the throttling of the throttle valve 21 is supplied from the bypass passage 19. In low load and high speed operation, the throttle valve 21 is opened perfectly under keeping the bypass valve 20 in opened state. In high load operation, the throttle valve 21 is perfectly opened, and the bypass valve 20 is closed. |
