Southwest Research Institute

Eugene L Broerman, Iii

Ralph E Harris

Klaus Brun

Gary D Bourn

Danny M Deffenbaugh

Melissa A Wilcox

Robert J McKee

Christine M Scrivner

A multi-chambered pulsation absorber for attachment over the valve cap opening of a compressor cylinder. Each chamber is in fluid communication with the valve cap opening (or cylinder internal gas passages) via an associated choke tube. Each pairing of a chamber with a choke tube is tuned, in the manner of a Helmholz resonator, to attenuate and nearly eliminate a different cylinder-related pulsation frequency, such as those resulting from internal cylinder pulsations or cylinder nozzle pulsations.

Multi-frequency pulsation absorber at cylinder valve cap

Systems, apparatus and methods of compressed air energy storage and electrical power generation are provided. In one embodiment, an apparatus is provided having a magnetic piston within a cylinder and an air chamber at each end of the piston; an electromagnetic coil is operable with the piston to convert an input of electrical power to a first reciprocating movement of the piston sufficient to generate compressed air in the chambers for storage in a compressed air storage reservoir; and the electromagnetic coil is operable with the piston to convert a second reciprocating movement of the piston to an output of electrical power connectable to a power grid, with the second reciprocating movement of the piston generated by bursts of the compressed air from the storage reservoir introduced into the chambers.

Energy storage and production systems, apparatus and methods of use thereof

A method and system for reducing pulsation in lateral piping associated with a gas compressor system. A tunable side branch absorber (TSBA) is installed on the lateral piping. A pulsation sensor is placed in the lateral piping, to measure pulsation within the piping. The sensor output signals are delivered to a controller, which controls actuators that change the acoustic dimensions of the SBA.

Gas compressor with side branch absorber for pulsation control

A method of improving scavenging operation of a two-stroke internal combustion engine. The exhaust pressure of the engine is analyzed to determine if there is a pulsation frequency. Acoustic modeling is used to design an absorber. An appropriately designed side branch absorber may be attached to the exhaust manifold.

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San Antonio, TX, United States of America

Eugene L Broerman, Iii