Engine Oil Channel Aeration Control Using High-Pressure Injection
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Solution Overview
Problem
Existing solutions for reducing aeration in engine oil inside internal combustion engines rely on natural bubble dissipation, which is inefficient when bubble content increases.
Innovation Solution
An internal combustion engine design that includes an oil storage portion with a suction portion, an oil channel, and a high-pressure portion with an oil injection hole to inject oil at higher pressure towards the bubble-containing oil flowing through the channel, utilizing a balancer housing chamber or oil discharge channel to crush bubbles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a baffle member with tray portion is used to store oil and wait for bubbles to naturally disappear, then the structure is simple and easy to manufacture, but the bubble elimination efficiency is low when bubble content increases
Solution Approach 1:
The patent utilizes hydraulic principles by injecting high-pressure oil through injection holes in the baffle member to physically disrupt and eliminate bubbles. The high-pressure oil jet creates shear forces that break up bubble clusters and accelerate bubble collapse, transforming a passive natural dissolution process into an active hydraulic intervention that significantly improves bubble elimination efficiency while maintaining structural simplicity
Solution Approach 2:
The patent changes the pressure parameter of the injected oil to resolve the contradiction. By supplying oil at high pressure through the injection holes rather than relying on natural pressure, the system achieves rapid bubble elimination even when bubble content is high, while the baffle member structure itself remains simple and easy to manufacture
2Productivity
If high pressure oil injection is used to crush bubbles, then bubble elimination efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using the baffle member's injection holes for dual purposes: oil distribution to lubrication points and bubble elimination through high-pressure injection. The oil pump serves both to circulate oil for lubrication and to generate the high-pressure jets needed for bubble crushing. This integration avoids adding separate bubble elimination devices, thereby improving productivity without significantly increasing device complexity
Solution Approach 2:
The system utilizes the existing oil circulation system to serve the bubble elimination function. The oil pump that already exists for lubrication purposes is leveraged to provide the high-pressure injection needed for bubble crushing. The baffle member structure, already present for oil distribution, is enhanced with injection holes that serve both oil delivery and bubble elimination functions, allowing the system to eliminate bubbles using its own resources without requiring additional complex equipment
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
Efficiently eliminates bubbles in circulating engine oil by using high-pressure oil injection to crush them against a tilted surface, reducing bubble content and enhancing lubrication and cooling efficiency.
Implementation Method 1
a high pressure portion that has a higher pressure than an atmospheric pressure and to which the oil is supplied, the high pressure portion being provided with an oil injection hole through which the oil is injected toward the bubble-containing oil flowing through the oil channel
Implementation Method 2
Aeration is a phenomenon that bubbles are mixed into oil. Aeration degrades the functions of oil to lubricate and cool various parts of the internal combustion engine
Data Source
AI summary
The internal combustion engine includes an oil storage portion in which a suction portion of oil supplied to various parts of the internal combustion engine body is disposed, an oil channel through which the bubble-containing oil returned from the various parts of the internal combustion engine body to the oil storage portion flows, and a high pressure portion in which the oil is supplied and becomes higher than the atmospheric pressure, and an oil injection hole for injecting oil toward the bubble-containing oil flowing in the oil channel is provided.