Rear-Engine Utility Vehicle Cooling With Front Radiator and Blower
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Solution Overview
Problem
Utility vehicles with engines in the rear part of the body face inefficiencies in cooling due to heat accumulation from the engine and auxiliaries, such as exhaust mufflers, which are not effectively addressed by traditional radiator-cooling systems.
Innovation Solution
The vehicle incorporates a radiator in the front part connected to the engine via a coolant circulation path and a blower surrounding the engine to supply cooling air, eliminating the need for additional coolant paths and utilizing a rotary fan driven by an electric motor powered by a nearby battery, thus enhancing cooling efficiency at low cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a radiator is placed in the front part of the body, then the engine can be cooled through coolant circulation, but heat accumulates in the rear part where the engine is located
Solution Approach 1:
The cooling system is divided into two independent parts: a coolant circulation system (radiator + coolant path) and an air blowing system (blower). The blower is positioned to surround the engine and directly supply cooling air to the engine area, while the radiator handles overall temperature regulation. This segmentation allows each component to address specific cooling needs without requiring complex integration.
2Temperature
If an auxiliary radiator is provided to cool the engine in the rear part, then cooling efficiency improves, but additional coolant circulation path is required increasing cost
Solution Approach 1:
The blower is integrated with the existing radiator structure, forming a combined cooling unit. The blower utilizes the radiator's housing and mounting structure, eliminating the need for separate auxiliary cooling components. This merging reduces part count and manufacturing complexity while achieving effective engine cooling through direct air supply to the engine area.
3Productivity
If the blower is positioned to supply cooling air from lateral side, then cooling air introduction efficiency improves, but battery placement becomes more complex
Solution Approach 1:
The blower is positioned at the lateral side of the engine to introduce cooling air from the side direction, creating a three-dimensional cooling flow pattern around the engine. This lateral positioning optimizes air intake efficiency by capturing ambient air from the side and directing it onto hot engine surfaces. The battery is arranged in the remaining lateral space, utilizing unused volume in the vehicle's side profile.
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 efficiently cools the engine by combining coolant and air cooling, reducing heat accumulation, and simplifying the electric circuit, thereby achieving effective and economical cooling.
Implementation Method 1
a blower disposed in a surrounding area of the engine and configured to supply cooling air to the engine
Implementation Method 2
the radiator being connected to the engine via a coolant circulation path
Data Source
Figure 1
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AI summary
A utility vehicle includes a radiator (11) in a front part of the body, the radiator being connected to an engine (9) via a coolant circulation path (12). A blower (14) is disposed in a surrounding area of the engine (9) and configured to supply cooling air to the engine (9).