Pressure Pulse Generator Single Electromagnet Hydraulic Locking
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Solution Overview
Problem
Existing pressure pulse generators for controlling engine valves are complex, leading to instability and high manufacturing costs, often requiring multiple electromagnets.
Innovation Solution
A pressure pulse generator design using a single electromagnet to control valve positions, with a hydraulic locking mechanism that keeps the actuator piston in a remote position for an extended time, allowing precise control of pressure pulses by adjusting the length of the actuator piston displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple electromagnets are used to control valve positions, then valve control capability is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
A single electromagnet performs multiple functions: it controls both the inlet valve and outlet valve through a shared control mechanism. The electromagnet activates a control piston that simultaneously influences both valve bodies, eliminating the need for separate electromagnets for each valve while maintaining control capability over both valves.
Solution Approach 2:
The control mechanisms for both valves are merged into a single integrated system. The control piston, control channels, and valve bodies form a unified control assembly where one electromagnet's action is transmitted to both valves through shared hydraulic control pathways, reducing the total number of electromagnetic components.
2Reliability
If multiple electromagnets are used to control valve positions, then valve control capability is improved, but manufacturing costs increase
Solution Approach 1:
A single electromagnet performs multiple functions: it controls both the inlet valve and outlet valve through a shared control mechanism. The electromagnet activates a control piston that simultaneously influences both valve bodies, eliminating the need for separate electromagnets for each valve while maintaining control capability over both valves.
Solution Approach 2:
The control mechanisms for both valves are merged into a single integrated system. The control piston, control channels, and valve bodies form a unified control assembly where one electromagnet's action is transmitted to both valves through shared hydraulic control pathways, reducing the total number of electromagnetic components.
3Duration of action of moving object
If pressure fluid flow is allowed to continue, then actuator piston displacement is maintained, but pressure pulse length becomes uncontrolled
Solution Approach 1:
The second valve body is pre-positioned within the control channel at a location that corresponds to the desired pressure pulse length. Before the actuator piston reaches its full potential displacement, the second valve body mechanically blocks the control channel, prematurely cutting off pressure fluid supply to the actuator piston. This preliminary blocking action precisely controls the pressure pulse duration based on the pre-set geometric relationship between the valve body position and channel geometry.
Solution Approach 2:
The second valve body acts as an intermediary mechanical element between the actuator piston and the pressure fluid supply. It mediates the pressure pulse duration by physically blocking the control channel at a predetermined position, translating the continuous pressure fluid flow into a precisely controlled, time-limited pressure pulse without requiring complex electronic timing controls.
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 design enhances stability and reduces manufacturing costs while ensuring consistent pressure pulse length and valve lift, facilitating efficient gas exchange in engines with improved control over valve opening and closing.
Implementation Method 1
When activating an electro element will displace a the first valve body to a position where it keeps the first channel closed
Implementation Method 2
as the pressure fluid acts on the actuator piston, a displacement of the actuator piston in an adjusted cylinder
Implementation Method 3
A hydraulic locking will cause the actuator piston and thus also the engine valve to be held in its second remote position an eligibly long time
Data Source
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AI summary
Pressure pulse generator comprising a cylinder (2), a body (9) connected to the cylinder (2), a first channel (15) extending from the cylinder (2) to a pressure sink LP, a pressure fluid circuit having a second channel (4) extending to the cylinder (2) from a pressure source HP, an actuator piston (3) being displaceable arranged, a controllable first valve body (5) arranged in the second channel (4) to open or close a pressure fluid flow in said second channel (4), an electro element (7) to control the valve body (5), a second valve body (8) arranged at or to the second channel (4) for opening or closing of said channel (4). The second valve body (8) is an element rigidly connected to the actuator piston (3).