| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce mechanical loss and eliminate unnecessary pump operation.SOLUTION: A vacuum pump (76) suctions air in an engine case (41) by power from an engine (12) to create a low pressure in the engine case. The power from the engine is transmitted to a transmission gear (C) of a transmission (13) connected with the engine through a clutch (75), which switches a power transmission state to a power interruption state and vice versa, thereby properly driving the vacuum pump according to a traveling state.</p> |
