Bulldozer

Abstract

In the engine compartment of a bulldozer the radiator is arranged forward of the engine. An exhaust gas treatment unit is arranged above the engine. A first exhaust gas treatment device of the exhaust gas treatment unit is arranged such that the longitudinal direction of the first exhaust gas treatment device follows the forward-backward direction of the vehicle. A second exhaust gas treatment device of the exhaust gas treatment unit is positioned to the side of the first exhaust gas treatment device, and arranged such that the longitudinal direction of the first exhaust gas treatment device follows the forward-backward direction of the vehicle. The air cleaner is arranged between the radiator and the exhaust gas treatment unit in the forward-backward direction of the vehicle.

Description

TECHNICAL FIELD[0001]The present invention relates to a bulldozer.BACKGROUND ART[0002]In recent years bulldozers are being mounted with a high level exhaust gas treatment device in order to protect the environment. An exhaust gas treatment device is a device that purifies exhaust gas from an engine. An exhaust gas treatment device may be for example, a device that lowers the level of nitrogen oxide (NOx), a device that lowers the level of carbon monoxide (CO) or a device that removes particulate matter. In the diesel engine exhaust gas treatment system disclosed in Patent document 1 for example, two exhaust gas treatment devices are arranged above the engine together with an air cleaner. The direction in which these exhaust gas treatment devices are arranged is such that the longitudinal direction of the device intersects with the longitudinal direction of the engine.PRIOR ART DOCUMENTSPatent Document[0003]Patent Document 1[0004]U.S. Pat. No. 8,141,535OUTLINE OF THE INVENTIONProblem...

AI Technical Summary

Benefits of technology

[0023]In the bulldozer according to the invention herein disclosed, processing performance of exhaust gas is improved and a reduction in visibility from the cab in the forward direction is avoided. Further, the effect of heat from the exhaust gas treatment unit impacting the radiator is avoided.

[0024]FIG. 1 provides a left side view of a bulldozer according to an embodiment of the present invention;

Problems solved by technology

Further, each of the exhaust gas treatment devices is of substantial size.

The engine compartment being of substantially large dimensions in the widthwise direction of the vehicle may cause a deterioration in visibility from the cab in the forward direction.

For example, when an operator operates the bulldozer while viewing the left an

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