Working vehicle

Abstract

The present invention addresses the problem of providing an engine device for a working vehicle configured so that: the heat retention characteristic of a first case (62) or a second case (63) can be easily improved; and a heat-insulated space (130) in which a pressure-difference sensor (111), etc. can be installed can be easily formed between an outer top plate (6a) and an inner top plate (6b). A working vehicle is provided with: an operation section (7) where the operator is positioned; the first case (62) for removing particulate matter in the exhaust gas of an engine (5); and the second case (63) for removing nitrogen oxide in the exhaust gas of the engine (5). The working vehicle is configured comprising a bonnet (6) for covering the upper surface side of the engine (5). The top plate section of the bonnet (6) is formed in a double structure using the outer top plate (6a) and the inner top plate (6b), the top plate section facing one or both of the first case (62) and the second case (63), which are disposed on the upper surface side of the engine (5).

Description

technical field [0001] The present invention relates to work vehicles such as agricultural machines (tractors, combines) and construction machines (bullldozers, hydraulic excavators, loaders) equipped with engines, and more specifically, to work vehicles such as tractors equipped with exhaust gas purification devices, The exhaust gas purification device is used to remove particulate matter (soot, fine particles) contained in the exhaust gas or nitrogen oxides (NOx) contained in the exhaust gas. Background technique [0002] In work vehicles such as tractors and wheel loaders, in order to improve the maintenance work efficiency of the engine arranged at the front of the traveling body, an opening and closing fulcrum shaft is arranged at the rear of the engine hood used to cover the engine, so that the engine hood The opening and closing fulcrum shaft rotates. Moreover, such a technique is known in the past, that is, in the exhaust path of a diesel engine, as an exhaust gas p...

AI Technical Summary

Problems solved by technology

In addition, as in Patent Document 2, when the catalyst case is separately assembled from the engine, the exhaust pipe for supplying exhaust gas from the engine to the catalyst case is formed by a support member for supporting the catalyst case on the traveling body, Therefore, it is necessary to form the supporting member into a special structure, and there are problems such as that the manufacturing cost cannot be easily reduced.

Images