Abstract: A natural gas compression system is provided. The system may include a natural gas compressor configured to compress, and thereby pump, natural gas through a pipeline. The system may also include a natural gas burning engine, operatively coupled to the gas compressor, the engine being supplied with air by an induction system. The induction system may include a supercharger driven by the engine and configured to compress intake air and a turbocharger downstream from the supercharger and driven by exhaust gases produced by the engine. The induction system may also include a supercharger compressor bypass configured to selectively recirculate a portion of the compressed output of the supercharger upstream of the supercharger.

Abstract: An air induction system for a power system is provided having a compressor operable to compress air directed into an engine. In addition, the air induction system has a throttle valve disposed between the compressor and the engine, the throttle valve being configured to selectively restrict the flow of compressed air into the engine. The air induction system also has a recirculation valve disposed between the compressor and the throttle valve, the recirculation valve being configured to selectively divert a portion of the flow of compressed air. Furthermore, the air induction system has a controller configured to actuate the recirculation valve in response to a pressure differential between air upstream of the throttle valve and air downstream of the throttle valve.

Abstract: An air induction system for a power system is provided having a compressor operable to compress air directed into an engine. In addition, the air induction system has a throttle valve disposed between the compressor and the engine, the throttle valve being configured to selectively restrict the flow of compressed air into the engine. The air induction system also has a recirculation valve disposed between the compressor and the throttle valve, the recirculation valve being configured to selectively divert a portion of the flow of compressed air. Furthermore, the air induction system has a controller configured to actuate the recirculation valve in response to a pressure differential between air upstream of the throttle valve and air downstream of the throttle valve.

Abstract: A natural gas compression system is provided. The system may include a natural gas compressor configured to compress, and thereby pump, natural gas through a pipeline. The system may also include a natural gas burning engine, operatively coupled to the gas compressor, the engine being supplied with air by an induction system. The induction system may include a supercharger driven by the engine and configured to compress intake air and a turbocharger downstream from the supercharger and driven by exhaust gases produced by the engine. The induction system may also include a supercharger compressor bypass configured to selectively recirculate a portion of the compressed output of the supercharger upstream of the supercharger.

Abstract: A sensing system is provided having a bypass configured to divert fluid from a main passageway. In addition, the sensing system has a fluid sensor situated within the bypass and configured to sense a concentration of an element contained within the fluid. The sensing system also has a first heater configured to convey thermal energy to the fluid sensor. Furthermore, the sensing system has a first temperature sensor configured to sense a parameter indicative of a temperature of the fluid sensor. The sensing system further has a controller configured to regulate the first heater in response to the sensed parameter indicative of the temperature of the fluid sensor.

Abstract: A method of controlling a compressor includes measuring a pressure of fluid entering the compressor, measuring a pressure of fluid exiting the compressor, and measuring a rotational speed of the compressor. Signals indicative of the measured pressure of fluid entering the compressor, measured pressure of fluid exiting the compressor, and measured rotational speed of the compressor are sent to an electronic control unit. The operation of the compressor is controlled in response to at least the signal indicative of the measured rotational speed of the compressor received by the electronic control unit.