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Internal combustion engine for natural gas compressor operation

United States Patent

9,316,178
April 19, 2016
View the Complete Patent at the US Patent & Trademark Office
This application concerns systems and methods for compressing natural gas with an internal combustion engine. In a representative embodiment, a system for compressing a gas comprises a reciprocating internal combustion engine including at least one piston-cylinder assembly comprising a piston configured to travel in a cylinder and to compress gas in the cylinder in multiple compression stages. The system can further comprise a first pressure tank in fluid communication with the piston-cylinder assembly to receive compressed gas from the piston-cylinder assembly until the first pressure tank reaches a predetermined pressure, and a second pressure tank in fluid communication with the piston-cylinder assembly and the first pressure tank. The second pressure tank can be configured to receive compressed gas from the piston-cylinder assembly until the second pressure tank reaches a predetermined pressure. When the first and second pressure tanks have reached the predetermined pressures, the first pressure tank can be configured to supply gas to the piston-cylinder assembly, and the piston can be configured to compress the gas supplied by the first pressure tank such that the compressed gas flows into the second pressure tank.
Hagen; Christopher L. (Bend, OR), Babbitt; Guy (Fort Collins, CO), Turner; Christopher (Fort Collins, CO), Echter; Nick (Fort Collins, CO), Weyer-Geigel; Kristina (Fort Collins, CO)
State of Oregon Acting By and Through the State Board of Higher Education on Behalf of Oregon State University (Corvallis, OR)
14/ 244,807
20140238327
April 3, 2014
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT This invention was made with government support under DE-AR0000259 awarded by the U.S. Department of Energy. The government has certain rights in the invention.