Compact Hydraulic Valve Design for Engine Oil Supply
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Solution Overview
Problem
The existing oil supply apparatus for automobile engines is bulky due to a hydraulic control valve with three radially protruding portions, leading to high material costs and poor mountability.
Innovation Solution
A compact oil supply apparatus design featuring a hydraulic control valve with two radially protruding lands and a small-diameter connecting portion, allowing controlled communication between oil passages to manage oil flow efficiently across different rotational speeds, reducing the overall size and improving mountability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hydraulic control valve with three radially protruding portions is used to control oil flow, then the oil supply can be managed across different rotational speeds, but the apparatus becomes bulky with high material costs and poor mountability
Solution Approach 1:
The patent combines multiple functions into a single compact hydraulic control valve body. The valve body integrates three radially protruding portions (first valve portion, second valve portion, and separation member) that collectively manage oil flow control across different rotational speeds, replacing what would otherwise require multiple separate components. This merging reduces the overall apparatus volume while maintaining full adaptability for oil supply management.
Solution Approach 2:
The hydraulic control valve body is designed as a multi-functional component that handles multiple oil flow control tasks simultaneously. The first valve portion controls communication between the first discharge port and feed oil passage, the second valve portion controls the second discharge port, and the separation member manages communication between oil passages. This universal design allows a single component to perform what would traditionally require multiple specialized parts, reducing apparatus size without sacrificing control capability.
2Adaptability or versatility
If a hydraulic control valve with three radially protruding portions is used to control oil flow, then the oil supply can be managed across different rotational speeds, but material costs increase
Solution Approach 1:
The patent merges multiple valve functions into a single integrated hydraulic control valve body, reducing the total quantity of parts that need to be manufactured and assembled. By combining the first valve portion, second valve portion, and separation member into one component, the invention reduces material consumption and manufacturing complexity compared to using three separate valve components, thereby lowering material costs while maintaining full oil flow control capability.
Solution Approach 2:
The universal hydraulic control valve body performs multiple oil flow control functions simultaneously, eliminating the need for multiple specialized valve components. This multi-functionality reduces the total material required for manufacturing and simplifies the production process, making the system more cost-effective while preserving complete adaptability for managing oil supply across different rotational speeds.
3Adaptability or versatility
If a hydraulic control valve with three radially protruding portions is used to control oil flow, then the oil supply can be managed across different rotational speeds, but mountability deteriorates
Solution Approach 1:
The patent combines multiple valve functions into a single compact hydraulic control valve body with integrated first valve portion, second valve portion, and separation member. This consolidation reduces the number of separate components that need to be installed and positioned, significantly improving mountability. The merged design maintains full oil flow control capability across different rotational speeds while presenting a smaller, more manageable assembly for installation in confined engine spaces.
Solution Approach 2:
The universal hydraulic control valve body performs multiple oil flow control functions in a single component, eliminating the need to install and coordinate multiple separate valve parts. This multi-functionality simplifies the mounting process by reducing the number of installation steps, alignment requirements, and connection points, thereby improving ease of installation and maintenance while preserving complete adaptability for oil supply management.
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
The compact design enhances mountability and reduces material costs while maintaining efficient oil supply by optimizing oil flow across varying rotational speeds, ensuring appropriate oil pressure and volume delivery.
Implementation Method 1
a hydraulic control valve having a valve body operable in response to the oil pressure of work oil fed to the feed oil passage for connecting/disconnecting the second oil passage to/from the first oil passage and the return oil passage
Implementation Method 2
a pump body including a suction port for suctioning work oil in association with rotation of a rotor driven by a drive source, and a first discharge port and a second discharge port that discharge work oil in association with the rotation of the rotor
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
In a compact oil supply apparatus, a valve body includes a first land and a second land protruding along the radial direction of the valve body about the axis thereof, and a small-diameter portion continuously connecting the first land with the second land and having a diameter smaller than at least the outer diameter of the first land and the second land. Rotational speeds of a rotor are set as a first rotational range, a second rotational range and a third rotational range in the ascending order. At the time of the first rotational range, work oil from a second discharge port is fed to a first oil passage via the small diameter portion. At the time of the second rotational range, the work oil from the second discharge port is fed to a return oil passage via the small diameter portion. At the time of the third rotational range after the second oil passage is blocked relative to the return oil passage by the second land, the work oil from the second discharge port is fed to the first oil passage.