Engine unit and work vehicle

摘要

Two sets of assemblies are arranged such that a diesel particulate filter device of an assembly as a first set, a selective catalytic reduction device of the assembly as the first set, a selective catalytic reduction device of an assembly as a second set, and a diesel particulate filter device of the assembly as the second set are located next to each other in this order. Respective first and second connection pipes are routed through a region directly underneath an arrangement region where the two selective catalytic reduction devices and the like are arranged, and connected to the respective diesel particulate filter devices. Thereby, an engine unit and a work vehicle which facilitate connection between an engine and an exhaust gas treatment structure and can reduce a load on the first and second connection pipes due to vibration can be achieved.

主权项

1. An engine unit, comprising:
an engine; a first exhaust gas treatment unit arranged above said engine and including a first exhaust gas treatment device and a second exhaust gas treatment device; a second exhaust gas treatment unit arranged above said engine and including a third exhaust gas treatment device and a fourth exhaust gas treatment device; a first connection pipe having an expandable first bellows part and guiding exhaust gas from said engine to said first exhaust gas treatment device of said first exhaust gas treatment unit; a second connection pipe having an expandable second bellows part and guiding the exhaust gas from said engine to said third exhaust gas treatment device of said second exhaust gas treatment unit; and a branch pipe dividing the exhaust gas from said engine, said first connection pipe connecting said branch pipe to said first exhaust gas treatment device and said second connection pipe connecting said branch pipe to said third exhaust gas treatment device, wherein said first to fourth exhaust gas treatment devices are arranged to be located in an order of said first exhaust gas treatment device, said second exhaust gas treatment device, said fourth exhaust gas treatment device, and said third exhaust gas treatment device, such that respective longitudinal directions thereof extend next to each other, said first connection pipe is routed through at least a partial region of a region directly underneath said second exhaust gas treatment device and a region directly underneath said fourth exhaust gas treatment device, said second connection pipe is routed through at least a partial region of the region directly underneath said second exhaust gas treatment device and the region directly underneath said fourth exhaust gas treatment device, and said branch pipe is disposed in at least a portion of regions directly underneath said second exhaust gas treatment device and said fourth exhaust gas treatment device.