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CNG compressors designed to meet the fuel system's need for providing high-pressure natural gas at the injectors have been successfully demonstrated. This compressor technology is modular and scalable to adapt to varying flow rates, gas pressures, and packaging requirements, which often dominate vehicle fuel-system design. Hydraulic fluid has been found to be a very powerful approach for actuation.
The compressor allows storage tanks to be drawn down to a low pressure while maintaining high injection pressure—typically 200 bar (3,000 psig)—thus allowing the utilization of up to 90% of the CNG tank contents.