EGR Cooler Vertical Stacking for Engine Width Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In engine devices where the Exhaust Gas Recirculation (EGR) cooler is connected to the front side surface of the cylinder head, an increase in the longitudinal width of the EGR cooler can lead to an increase in the lateral width of the engine device, compromising its mountability on work machines, especially for high-power engines.
Innovation Solution
The engine device configuration includes locating the EGR cooler below the exhaust manifold, allowing it to overlap with the exhaust manifold, thus maintaining the lateral width of the engine device without increasing it due to the EGR cooler's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the EGR cooler is connected to the front side surface of the cylinder head, then the EGR cooler can be easily mounted, but the lateral width of the engine device increases when the EGR cooler is large
Solution Approach 1:
The EGR cooler is repositioned from a lateral connection to the front side surface to a vertical arrangement below the exhaust manifold. This dimensional change allows the EGR cooler to be stacked in the vertical direction rather than extending laterally, thereby reducing the lateral width of the engine device while maintaining mounting accessibility
2Power
If the longitudinal width of the EGR cooler is increased for high power applications, then the cooling capacity is improved, but the lateral width of the engine device increases
Solution Approach 1:
The EGR cooler is positioned below the exhaust manifold in a vertical stacking arrangement. This allows the longitudinal width of the EGR cooler to be increased for high power applications without increasing the lateral width of the engine device, as the extended dimension is directed vertically rather than laterally
Solution Approach 2:
The EGR cooler is nested within the vertical space below the exhaust manifold, utilizing the available vertical volume. This nesting arrangement allows the EGR cooler to achieve the necessary longitudinal width for high power cooling capacity while being contained within the existing lateral footprint of the engine device
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
This configuration effectively suppresses the increase in the lateral width of the engine device, enhancing its mountability on work machines by maintaining a compact design even with larger EGR coolers.
Implementation Method 1
The EGR cooler is located below the exhaust manifold and cools the EGR gas, which is part of the exhaust gas exhausted from the exhaust manifold
Data Source
AI summary
Provided is an engine device for which an increase in width can be suppressed due to the size of an EGR cooler. The engine device comprises: a cylinder block; a cylinder head; an exhaust manifold; and an EGR cooler. The cylinder head is disposed above the cylinder block. The exhaust manifold is disposed on one side surface of the cylinder head and circulates exhaust gas exhausted from the cylinder head. The EGR cooler is disposed below the exhaust manifold and cools EGR gas constituting a portion of the exhaust gas exhausted from the exhaust manifold.