Work Vehicle Cooling Air Deflection Device
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Solution Overview
Problem
In work vehicles with internal combustion engines, the cooling air becomes overheated after passing through the radiator, leading to increased heat in the operator's station and potential overheating due to recirculation of heated air, resulting in insufficient cold air for thermal regulation.
Innovation Solution
A cooling air device with a lateral cooling air inlet and a front-side outlet featuring a deflection mechanism, including inclined air baffles, directs exiting cooling air away from the intake, ensuring fresh ambient air is continuously drawn in, while the cooling fan and radiator placement prevent initial air heating and facilitate efficient air flow through the engine compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling air is drawn through the radiator and engine compartment, then the engine is cooled effectively, but the cooling air becomes overheated and recirculates back into the intake
Solution Approach 1:
The patent introduces a lateral dimension to the cooling air flow path by positioning the inlet on the side of the vehicle and using a deflection device at the front outlet to direct exhaust air laterally. This spatial arrangement in another dimension prevents the heated air from returning to the inlet, solving the recirculation problem while maintaining effective cooling.
2Productivity
If the cooling air outlet is positioned at the front of the vehicle, then cooling air can be expelled efficiently, but heated air may be drawn back in through the lateral inlet depending on direction of travel
Solution Approach 1:
The deflection device is installed in advance at the cooling air outlet to preemptively counteract the potential harmful effect of air recirculation. By directing the exhaust air laterally before it has a chance to mix with ambient air and be drawn back in, the system prevents the temperature rise at the inlet regardless of the vehicle's direction of travel.
3Quantity of substance
If the cooling air fan is positioned upstream of the radiator, then air can be drawn in for cooling, but the air is heated before reaching the engine compartment
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the cooling air fan downstream of the radiator instead of upstream. This reversal ensures that air is drawn directly into the engine compartment first, cooling the engine, and then passes through the radiator for additional cooling before being expelled, preventing pre-heating of the cooling air.
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 prevents the recirculation of heated air, maintaining a cooler environment for the engine compartment and operator station, ensuring adequate cooling and preventing thermal overload by ensuring continuous intake of fresh air.
Implementation Method 1
cooling air for the engine compartment is usually sucked in through a radiator by means of a cooling air fan. The cooling air fan then conveys or forces the cooling air through the engine compartment
Implementation Method 2
a cooler arranged in the flow path of the cooling air through the engine compartment between the cooling air inlet and the cooling air outlet
Implementation Method 3
the cooling air outlet having a cooling air deflection device which is designed in such a way that cooling air exiting is guided in the direction of a second (lateral) side of the vehicle
Data Source
Figure 1A~1B
Figure 2~3
Figure 4
AI summary
A work vehicle is described, comprising an internal combustion engine (48) arranged in an engine compartment (46), an operator's station (12) arranged above the engine compartment (46), and a cooling air system with a cooling air inlet (20), a cooling air outlet (24), a cooling air fan (50), and a radiator (56) arranged in the flow path of the cooling air (KL) through the engine compartment (46) between the cooling air inlet (20) and the cooling air outlet (24). With respect to a main direction of travel (HR) of the work vehicle (10), the cooling air inlet (20) of the engine compartment (46) is located on a first side (18) of the vehicle, and the cooling air outlet (24) of the engine compartment (46) is located on a front side (22) of the vehicle. The cooling air outlet (24) has a cooling air deflection device (58) designed such that the exiting cooling air (KL) is directed towards a second side of the vehicle. (26) is conducted.