| 摘要 |
PURPOSE:To make accurate detection performable, by performing the detection of engine load at the time of low load with the valve open timing of a rotary valve in the bypass passage installed so as to bypass a shutter valve in a suction passage and an engine speed. CONSTITUTION:This suction device is made up of installing a shutter valve each to a suction passage 10a to be connected to a suction port 3 of each cylinder, and a rotary valve 18 in the bypass passage 15a installed so as to bypass the shutter valve 11a side by side. At a low load range, the shutter valve 11a is closed, while the rotary valve 18 is closed in the point midway in a suction stroke, and it controls valve open timing of the said valve 18 so as to be delayed according to an increase in the opening of an accelerator pedal. At this juncture, when engine load is detected at the time of low load, each detection signal of the valve open timing of the rotary valve 18 and an engine speed is inputted into a control unit (unillustrated herein), and the engine load is detected according to these detection signal. |
