Dozer Engine Room Layout for Cooling and Forward Visibility
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Solution Overview
Problem
The installation of an engine room in front of the cabin in dozers obstructs the driver's view of the working area, compromising safety due to the space occupied by engine components.
Innovation Solution
A dozer design that includes an engine room with an exhaust gas after-treatment device, where a first cooling device is positioned in front of the cabin to cool the after-treatment device, and a second cooling device is spaced apart, with the cabin in between, to reduce the volume of the engine room and minimize obstructions to the driver's view. This configuration allows for effective installation of the engine and exhaust gas after-treatment device while maintaining a clear field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the engine room is located in front of the cabin, then the engine and exhaust gas after-treatment device can be installed, but the driver's field of view is obstructed
Solution Approach 1:
The exhaust gas after-treatment device is positioned above the engine in the vertical dimension, rather than placing it horizontally in front of the cabin. This vertical arrangement allows the engine room to be compact while maintaining the driver's forward field of view, as the high-positioned after-treatment device does not obstruct the horizontal line of sight.
Solution Approach 2:
The exhaust gas after-treatment device is nested within the engine room structure, specifically positioned above the engine. This nesting approach consolidates the engine and after-treatment device into a compact vertical arrangement, reducing the horizontal footprint of the engine room and minimizing obstructions to the driver's view.
2Illumination intensity
If the engine room volume is reduced to minimize obstructions, then the driver's view is improved, but the cooling of the engine and exhaust gas after-treatment device becomes more difficult
Solution Approach 1:
The cooling system is segmented into two independent cooling devices: a first cooling device dedicated to cooling the exhaust gas after-treatment device, and a second cooling device for cooling the engine. This segmentation allows each cooling device to be optimized for its specific target, enabling effective cooling within a compact engine room configuration.
Solution Approach 2:
Cooling media (such as coolant or air) act as intermediaries to transfer heat from the engine and exhaust gas after-treatment device to the external environment. The cooling devices use these intermediary substances to efficiently remove heat from the compactly arranged engine components without requiring excessive space.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compact configuration of the engine room reduces obstructions to the driver's view, enabling safer operation by allowing for effective cooling of both the engine and exhaust gas after-treatment device, enhancing engine efficiency and preventing high temperatures from affecting the after-treatment device.
Implementation Method 1
a first cooling device located in front of the cabin and capable of cooling the exhaust gas after-treatment device
Implementation Method 2
a second cooling device spaced apart from the first cooling device, with the cabin midway therebetween, and capable of cooling the engine
Implementation Method 3
an exhaust gas after-treatment device for purifying exhaust gases emitted from the engine
Data Source
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AI summary
A dozer including a cabin, the dozer includes: an engine room located in front of the cabin, where an engine is disposed; an exhaust gas after-treatment device for purifying exhaust gases emitted from the engine; a first cooling device located in front of the cabin and capable of cooling the exhaust gas after-treatment device; and a second cooling device spaced apart from the first cooling device, with the cabin midway therebetween, and capable of cooling the engine.