Construction Machine Engine Room Layout for Shorter Harness Routing
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Solution Overview
Problem
The existing construction machines have inefficient component layout in the engine room, with long harnesses connecting the engine-related electric devices to the battery and fuse box, and inadequate utilization of space.
Innovation Solution
The engine room is optimized by arranging the battery below a partition plate and the fuse box between the partition plate and the battery, with a heat exchanger between the cooling fan and exhaust opening, forming an air discharge passage, and connecting the fuse box to the circuit between the electric device and battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery and fuse box are arranged at the side of the fuel tank adjacent to the engine, then the engine-related electric devices can be connected to the battery, but the harness becomes long and the engine room space is not effectively utilized
Solution Approach 1:
The patent relocates the battery and fuse box from the traditional side-position arrangement to a vertical stacking arrangement below the partition plate. This dimensional change from horizontal to vertical placement reduces the horizontal distance for harness routing while effectively utilizing the previously underutilized vertical space in the engine room.
Solution Approach 2:
The fuse box is positioned between the battery and the partition plate, creating a nested arrangement where components are stacked vertically within the available space. This nesting approach maximizes space utilization and minimizes the overall footprint of the electrical system in the engine room.
2Ease of operation
If the battery and fuse box are arranged at the side of the fuel tank, then the electric devices can be connected, but the space of the engine room is not effectively utilized
Solution Approach 1:
The patent transitions from horizontal space utilization to vertical space utilization by stacking the battery and fuse box vertically below the partition plate. This effectively uses the vertical dimension of the engine room that was previously wasted, thereby improving overall space utilization.
Solution Approach 2:
The partition plate is used to create distinct spatial zones within the engine room. By segmenting the engine room space with the partition plate, the patent defines a specific area below it for housing the battery and fuse box, organizing the layout and improving space efficiency.
3Reliability
If the heat exchanger is arranged between the cooling fan and exhaust opening with a partition plate forming an air discharge passage, then the cooling system functions properly, but the component layout complexity increases
Solution Approach 1:
The partition plate is used to segment the engine room into functional zones, creating a dedicated air discharge passage between the heat exchanger and exhaust opening. This segmentation ensures proper airflow paths and cooling system functionality while organizing components into logical groups.
Solution Approach 2:
The partition plate serves multiple functions: it acts as a structural support element, creates the air discharge passage for the heat exchanger, and defines the spatial boundary for the battery and fuse box arrangement. This multi-functionality reduces the need for additional separate components.
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
Improves component layout efficiency in the engine room, enhances accessibility, and maintains a more organized and efficient engine compartment layout.
Implementation Method 1
a heat exchanger arranged between the cooling fan and the exhaust opening
Implementation Method 2
a cooling fan arranged between the engine and the exhaust opening
Data Source
AI summary
A construction machine includes an engine, a cooling fan, a hood, a heat exchanger, a partition plate, a battery, and a fuse box. The engine has electrical equipment. The cooling fan is mounted to the engine. The hood has an exhaust port. The heat exchanger is disposed between the cooling fan and the exhaust port. The partition plate defines an exhaust air channel between the heat exchanger and the exhaust port. The battery is disposed in a space under the partition plate. The fuse box is connected to a circuit joining the electrical equipment of the engine and the battery. The fuse box is disposed between the battery and the partition plate.