Lubricating Device Nozzle Length Adaptation
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Solution Overview
Problem
Existing lubricating devices for power transmitting systems face challenges in managing oil delivery, leading to excessive oil supply at high temperatures and insufficient supply at low temperatures, resulting in power loss and compromised lubrication performance.
Innovation Solution
The lubricating device features an oil piping assembly with a first oil delivery nozzle and a second oil delivery nozzle of longer length, where the second nozzle's increased length restricts oil flow at low temperatures and allows excess oil to be caught at high temperatures, ensuring optimal lubrication and power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the diameter of the second oil delivery nozzle is reduced, then a sufficient amount of oil can be delivered to the lubricated portion when the oil has high viscosity (low temperature), but an excessively large amount of oil is delivered to the lubricated portion when the oil has low viscosity (high temperature)
Solution Approach 1:
The patent changes the physical parameter of the second oil delivery nozzle from diameter to length. By making the second nozzle longer than the first nozzle, the system creates different flow resistance characteristics that automatically adapt to varying oil viscosities at different temperatures, resolving the contradiction between maintaining sufficient lubrication at low temperatures and preventing excessive oil delivery at high temperatures
Solution Approach 2:
The patent creates a dynamic oil delivery system where the relative lengths of the first and second nozzles enable the system to automatically adjust oil distribution based on operating conditions. The longer second nozzle provides greater flow resistance that becomes more effective when oil viscosity increases at low temperatures, while preventing excessive flow when viscosity decreases at high temperatures
2Loss of energy
If the diameter of the second oil delivery nozzle is made large enough to permit adequate oil flow into the oil catcher at high temperature, then a sufficient amount of oil cannot be delivered to the lubricated portion when the oil has high viscosity (low temperature)
Solution Approach 1:
The patent changes the controlling parameter from nozzle diameter to nozzle length for the second oil delivery nozzle. This allows the nozzle to have a larger diameter for adequate flow capacity while using increased length to create appropriate flow resistance, thereby preventing excessive oil delivery to the lubricated portion at high temperatures while maintaining sufficient delivery at low temperatures
3Device complexity
If a single nozzle diameter is used for both oil delivery paths, then the system structure is simple, but it cannot simultaneously prevent power loss at high temperature and ensure adequate lubrication at low temperature
Solution Approach 1:
The patent applies different geometric characteristics to different parts of the oil delivery system. The first nozzle has a specific length optimized for direct lubrication delivery, while the second nozzle has a longer length optimized for oil catcher supply. This local differentiation of nozzle properties enables each path to be optimized for its specific function while maintaining overall system simplicity
Solution Approach 2:
The patent segments the oil delivery system into two distinct nozzle paths with different lengths. The first nozzle delivers oil directly to the lubricated portion, while the second nozzle delivers oil to the oil catcher. By segmenting the delivery paths and giving them different geometric properties, the system achieves reliable lubrication performance across varying temperature conditions
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 reduces power loss and maintains high lubrication performance by adjusting oil delivery based on temperature-dependent viscosity, ensuring sufficient lubrication at low temperatures and preventing excessive oil delivery at high temperatures.
Implementation Method 1
the length of the second oil delivery nozzle is larger than that of the first oil delivery nozzle, so that when the oil has a comparatively low temperature and an accordingly high degree of viscosity, an amount of friction of the oil with respect to an inner wall surface of the second oil delivery nozzle having the comparatively large length is comparatively large
Data Source
AI summary
A lubricating device of a power transmitting system including a power transmitting mechanism. The lubricating device includes: an oil reservoir; an oil pump; an oil catcher provided to receive a portion of the oil delivered from the oil pump; and an oil piping assembly through which the oil delivered from the oil pump flows to be delivered to each of the at least one lubricated portion. The oil piping assembly has a first oil delivery nozzle from which the oil is delivered to each lubricated portion, and a second oil delivery nozzle from which the portion of the oil delivered from the oil pump flows into the oil catcher. The second oil delivery nozzle has a length larger than that of the first oil delivery nozzle.