| 摘要 |
PURPOSE:To prevent deterioration of driving efficiency of an engine with a number of constitutional part items decreased and constitution in an engine room simplified by providing a pump driving mechanism part in which a drive shaft of a pump main unit is connected to a drive shaft end part of the engine and directly driven. CONSTITUTION:A constitution is provided such that a drive shaft 26 of a pump main unit 23 is connected to the end part of a crankshaft 22 of an engine and directly driven integrally with the crankshaft 22 at the time of driving the engine. In this way, a constitutional part for transmitting driving power of the engine can be omitted with the constitution made possible to reduce a number of constitutional part items while to simplify a constitution in an engine room as compared with that in the past. Also by eliminating the possibility of inputting a load by tension of a belt or the like as in the past to the crankshaft 22 of the engine, driving efficiency of the engine can be prevented from deteriorating by preventing an increase of friction force which acts on the main bearing 76 of the engine. |
