Results 231 to 240 of about 4,519,794 (278)

Modeling of a pressure reducing valve actuator for automotive applications

2009 IEEE Control Applications, (CCA) & Intelligent Control, (ISIC), 2009
Significant research effort has been directed towards developing vehicle systems that reduce the energy consumption of an automobile and because pressure control valves are used as actuators in many control applications for automotive systems, a proper dynamic model is necessary.
Andreea Elena Balau, Constantin Florin Caruntu, Daniel Ionut Patrascu, Corneliu Lazar, Mihaela-Hanako Matcovschi, Octavian C. Pastravanu   +5 more
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An observer design for a poppet type pressure reducing valve

2011 IEEE International Conference on Control Applications (CCA), 2011
This paper presents an observer design that may be used to improve the response and stability characteristics of a solenoid operated pressure-reducing valve. Most pressure-reducing valves have very little inherent damping, and can potentially exhibit unstable behavior due to fluid velocity effects during the opening of the poppet.
Ganga P. Jayaraman, Stephen V. Lunzman
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Gas pressure reducing valve noise

Journal of Sound and Vibration, 1975
The application of Lighthill's eighth power of velocity relationship, for the noise generated by turbulent jets, to the special case of noise generated by gas pressure reducing valves, is discussed. An equivalent relationship expressed in convenient valve parameters is developed. Some experimental results are presented which indicate a reduced acoustic
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Purposes and Limits of Pressure‐Reducing Valves

Opflow, 1988
This article discusses how pressure‐valves function in a treatment plant or distribution system. The capabilities and limitations of the valves are discussed as well as the role of utility operators in maximizing their efficiency.
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A practical solution to the problem of noise and vibration in a pressure-reducing valve

Experimental Thermal and Fluid Science, 1993
Abstract The mechanical vibration that is occasionally found in gas pressure reducing valves can be eliminated by careful design of the valve plug and seat. A pressure-reducing valve was found to be excessively noisy, producing a sound pressure level of 117 dB when throttling air at an inlet-to-outlet pressure ratio of 15; as a result the valve ...
A. Amini, I. Owen
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Simulation research of proportional pressure-reducing valve

International Conference on Advanced Technology of Design and Manufacture (ATDM 2010), 2010
The electro-hydraulic brake valve is a key component in electro-hydraulic brake system of the wheeled construction vehicles. Its structure and performance parameters have great influence on the braking system. At present, foreign electro-hydraulic braking system used by the electro-hydraulic brake valve structurally similar to direct-acting ...
null Yao Guangwei, null Lin Muyi
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Dynamic research of Pressure-reducing Valve

2021
The principle of work of the Pressure-reducing Valve is shown as an example of linear automatic control system. The dynamics of a constant pressure control device is considered. The low internal resistance of a pressure source for the whole range of fluid flow is assumed.
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Pressure Reducing Valves in Pipe Network Analysis

Journal of the Hydraulics Division, 1976
The three separate systems of equations that are in common use in solving steady flow problems in pipe networks are described and the method for including pressure reducing valves in each of these systems is given. The emphasis is on use of efficient computer oriented methods.
Roland W. Jeppson, Allen L. Davis
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Ultra-High-Pressure Pneumatic Pressure Reducing Valve

2019
The general industrial pneumatic system pressure is less than 8 MPa. Aerospace and other extreme environments require pneumatic energy and its control valves to promote the development of small volume, lightweight, high-performance ultra-high-pressure pneumatic control valves. The pressure of the self-contained pneumatic energy device has reached 15–80
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The Analysis and Design of Hydraulic Pressure-Reducing Valves

Journal of Engineering for Industry, 1967
This paper presents the static and dynamic characteristics of single-stage pressure-reducing valves and establishes design criteria. The dynamic analysis was accomplished using frequency-response techniques. A simplified loop gain function is developed for the valve and consists of a loop gain constant and two dominant time constants.
openaire   +1 more source