Electromagnetic Adjusting Device H-Bridge Circuit Plug Compatibility
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Solution Overview
Problem
Electromagnetic adjusting devices for camshaft phasers either require three plug contacts for two magnet coils or two for a single magnet coil, leading to incompatibility between different configurations, necessitating separate sockets and limiting plug compatibility.
Innovation Solution
An electromagnetic adjusting device with a single magnet coil is configured in an H circuit using transistor elements and reverse polarity protection diodes, allowing for two current flow directions and creating three plug contacts, enabling compatibility with two-magnet coil devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single magnet coil is used in the electromagnetic adjusting device, then the plug requires only two plug contacts, but the device loses bidirectional actuation capability
Solution Approach 1:
The patent applies parameter changes by modifying the electrical configuration rather than the physical coil structure. By changing the circuit topology to include transistor elements and resistance elements in an H-bridge arrangement, the single magnet coil achieves variable current direction control, enabling bidirectional actuation without adding physical coils. This parameter change transforms a unidirectional single-coil system into a bidirectional system.
Solution Approach 2:
The patent introduces transistor elements and resistance elements as intermediaries between the power supply and the single magnet coil. These intermediary components control the current flow direction through the coil, enabling bidirectional actuation. The transistor elements act as switches that direct current flow, while resistance elements provide necessary electrical paths, collectively mediating the control signal to achieve opposing magnetic forces from a single coil.
2Adaptability or versatility
If transistor elements are added to enable bidirectional actuation with a single coil, then plug compatibility is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the control function into separate transistor elements and resistance elements. Each transistor element with its associated resistance element forms an independent control branch in the H-bridge circuit. This segmentation allows modular implementation of the bidirectional control logic, where each segment handles one direction of actuation, making the overall system manageable despite the increased component count.
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 allows for a plug compatible with two-magnet coil devices, reducing the need for separate sockets and enhancing flexibility in motor control systems for camshaft phasers.
Implementation Method 1
an electromagnetic adjusting device for actuating a control valve of the hydraulic cam phaser, the electromagnetic adjusting device providing at least one magnet coil
Data Source
AI summary
An electromagnetic adjusting device having a first, second and third plug contacts for operating the adjusting device on an operating voltage source having a first and second voltage pole. The device can include an actuator coupled to the plug contacts. The actuator can have a magnet coil with a first terminal connected to the first plug contact, a second terminal connected to the second plug contact, where either the first or the second plug contact is connected to the first voltage pole. The magnet coil can also have a first transistor with a first control electrode connecting the first terminal to the third plug contact, a second transistor having a second control electrode connecting the second terminal to the third plug contact, a first resistor connecting the first control electrode to the second plug contact and a second resistor connecting the second control electrode to the first plug contact.