Work Vehicle Control Unit Layout for Engine Heat Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In lawnmowers, the ambient temperature of the engine control device rises due to the engine's operation, leading to potential malfunctions.
Innovation Solution
The engine control device is positioned behind the hydraulic pump, which blocks hot air from the engine, and is mounted on a bracket that disperses vibrations and allows for airflow to cool it, preventing excessive temperature increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the engine control device is disposed near the engine to simplify the overall structure, then the device complexity is reduced, but the ambient temperature of the engine control device rises causing potential malfunctions
Solution Approach 1:
The patent positions the engine control device in the rear portion of the vehicle body, behind the hydraulic pump, creating a spatial separation along the longitudinal axis. This dimensional arrangement allows the control device to be close to the engine for structural simplicity while simultaneously positioning it in a cooler zone behind the hydraulic pump to avoid excessive temperature rise.
2Temperature
If the engine control device is disposed behind the hydraulic pump to suppress temperature rise, then the temperature control is improved, but the device complexity increases
Solution Approach 1:
The hydraulic pump serves dual functions: it transmits power from the engine to the vehicle wheel and simultaneously acts as a thermal barrier protecting the engine control device from engine heat. This multi-functionality allows the control device to be positioned behind the hydraulic pump for temperature control without significantly increasing overall device complexity.
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 ambient temperature of the engine control device, preventing malfunctions and ensuring reliable operation.
Implementation Method 1
The hydraulic pump (13a) is disposed behind the engine (4) and transmits power of the engine (4) to the vehicle wheel (32). The control device (100) is disposed behind the hydraulic pump (13a) and controls the engine (4).
Implementation Method 2
The control device (100) is mounted on a bracket that disperses vibrations and allows for airflow to cool it
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
To provide a work vehicle capable of suppressing a rise in the ambient temperature of an engine control device. A work vehicle according to one aspect of an embodiment includes a traveling vehicle body, a mower device (3), a driver's seat (20), an engine (4), a hydraulic pump (13a), and a control device. The traveling vehicle body has a vehicle wheel (31). The mower device is provided on the traveling vehicle body. The driver's seat (20) is provided in front of the traveling vehicle body. The engine (4) is provided in the rear part of the traveling vehicle body. The hydraulic pump (13a) is disposed behind the engine (4) and transmits power of the engine to the vehicle wheel (1). The control device is disposed behind the hydraulic pump (13a) and controls the engine (4).