| 摘要 |
<p>PURPOSE:To ensure the effective arrangement of gas equipment by solving a three-way catalyst problem including a trouble where the catalyst is vulnerable to a vibration and, when directly fitted to an engine, undergoes separation or the like to such an extent as unable to have an enough effect of reducing carbon dioxide or nitrogen oxide in exhaust gas, at the time of changing a prime mover from a diesel engine to a gas engine. CONSTITUTION:Regarding a pivotal turn work vehicle where a gas engine E to be actuated with fuel gas is installed in a bonnet 4, fuel gas equipment is provided at the upper section of a work machine hydraulic pump attached to the engine E. Furthermore, a three-way catalyst 15 constituting the equipment is laid above an exhaust manifold 27. Also, the catalyst 15 is fixed to the bonnet 4 and an exhaust muffler 16 and an air cleaner 17 are jointed to each other with flexible pipes 18 and 19 via the catalyst 15.</p> |
