Work Vehicle Storage Unit for Oil Temperature Management
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Solution Overview
Problem
Existing work vehicles face inefficiencies in power transmission device operation due to low viscosity and temperature of work oil during cold start, and layout challenges with different power transmission devices, leading to reduced operating efficiency and cooling effectiveness.
Innovation Solution
A work vehicle design featuring a storage unit with separate compartments for work oil and cooling fluid, where the cooling fluid circulates to heat the work oil, eliminating the need for a dedicated oil cooler and allowing easy layout adjustments by supporting either the storage unit or exhaust muffler with a versatile support portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a dedicated oil cooler is provided in the hydraulic circuit to cool the work oil, then the cooling efficiency of the work oil is improved, but the operating efficiency of the power transmission device is reduced due to pressure loss
Solution Approach 1:
The invention extracts the cooling function from the hydraulic circuit by using a separate cooling circuit. The work oil is cooled indirectly through heat exchange with the cooling fluid in the storage tank, rather than forcing the work oil through a dedicated cooler in the hydraulic circuit. This eliminates the pressure loss while maintaining cooling efficiency.
Solution Approach 2:
The invention introduces a cooling fluid as an intermediary medium between the work oil and the external environment. The cooling fluid absorbs heat from the work oil through the storage tank wall, enabling indirect cooling without direct flow resistance in the work oil circuit.
2Adaptability or versatility
If different power transmission devices are installed in the work vehicle, then the adaptability of the vehicle is improved, but the layout complexity of peripheral devices increases
Solution Approach 1:
The storage tank is designed with multi-functionality, serving as both a work oil reservoir and a heat exchanger. The universal support portion can accommodate different configurations of peripheral devices. This multi-functional design allows the same basic structure to support different power transmission devices without increasing layout 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 rapidly raises the work oil temperature, enhances power transmission device efficiency, and facilitates easy layout changes, improving both cooling efficiency and operational efficiency without the need for a dedicated oil cooler.
Implementation Method 1
The heat of the cooling fluid then conducts from the second storage space to the first storage space, and the work oil is heated by the cooling fluid
Implementation Method 2
When the temperature of the work oil rises higher than the temperature of the cooling fluid, the heat of the work oil conducts from the first storage space to the second storage space, and the work oil is cooled by the cooling fluid
Data Source
AI summary
A work vehicle includes an engine (11); a traveling device (1, 2) capable of traveling on the ground; a power transmission device (13) that transmits driving power of the engine (11) to the traveling device (1, 2) with a work oil; a cooling device (15) for cooling the engine (11) with a cooling fluid; a storage unit (17) having a first storage space (17A) for storing the work oil and a second storage space (17B) for storing the cooling fluid.