Abstract: A system, in certain embodiments, includes a composite piston. The composite piston comprises a piston body made of a composite material, wherein the composite material comprises a reinforcing material distributed in a matrix material.

Abstract: A stability mechanism that can reduce deformation of a frame of a compressor. The stability mechanism can have a support member with an x-shaped configuration having a pair of peripheral members and diagonal components disposed therebetween. In use, the support member can work in combination with elongated “tie bars” to prevent deformation of the frame that may result from installation and/or use of the compressor.

Abstract: An engine is provided. In one embodiment, the engine includes a precombustion chamber having a body, a secondary combustion chamber disposed at least partially in the body, and a plurality of passages configured to place the precombustion chamber in fluid communication with a main combustion chamber.

Abstract: Disclosed is a device that includes a natural-gas compression system having a natural-gas powered combustion engine, a compression cylinder configured to receive natural gas and output compressed natural gas, a piston disposed in the compression cylinder and configured to translate through the compression cylinder in response to mechanical power received from the natural-gas powered combustion engine, and a variable-volume head mounted to the compression cylinder and configured to vary a compressed volume of the compression cylinder. In some instances, the variable-volume head includes a head body, an adjustment screw rotatably coupled to the head body, a plug moveable in threaded engagement with the adjustment screw, and an anti-rotation device coupled to the plug, the head body, or both. The anti-rotation device may be configured to impede the plug from rotating relative to the head body as the adjustment screw rotates.

Abstract: A low emissions 2-stroke natural gas fueled engine includes at least one cylinder with an exhaust port in communication with a silencer-catalytic converter unit. The unit has first and second volumes in communication with each other. The first volume damps spurious exhaust pressure excursions and removes particulates in the exhaust. The second volume houses an oxidation catalyst for treating exhaust to reduce exhaust emissions. The engine oil has at most 10 ppm zinc content to reduce metal poisons contained in the exhaust prior to contact with the oxidation catalyst. The engine oil preferably has a very low ash content to minimize sulfur combustion components in the exhaust to reduce masking of the oxidation catalyst. The first volume preferably has a pressure relief valve set to relieve at a pressure greater than the maximum normal operating pressure of the engine to avoid excessive pressure excursions of the engine exhaust from damaging the oxidation catalyst.

Abstract: An engine is provided. In one embodiment, the engine includes a precombustion chamber having a body, a secondary combustion chamber disposed at least partially in the body, and a plurality of passages configured to place the precombustion chamber in fluid communication with a main combustion chamber.

Abstract: A system, in certain embodiments, includes a composite crosshead. The composite crosshead comprises a crosshead body made of a first composite material, wherein the first composite material comprises a first reinforcing material distributed in a first matrix material, wherein the composite crosshead is configured to move in a reciprocating motion in a machine.

Abstract: A system, in certain embodiments, includes a compression cylinder configured to mount to a reciprocating compressor. The compression cylinder includes an intake port and a discharge port. The system also includes a piston assembly disposed within the compression cylinder. The piston assembly includes a piston, and a flow control member extending from the piston. The flow control member is configured to selectively block the intake port and the discharge port upon movement of the piston assembly relative to the compression cylinder.

Abstract: An engine is provided. In one embodiment, the engine includes a precombustion chamber having a body, a secondary combustion chamber disposed at least partially in the body, and a plurality of passages configured to place the precombustion chamber in fluid communication with a main combustion chamber.

Abstract: A pre-chamber is provided. In one embodiment, the pre-chamber is part of a two-stroke combustion engine having a cylinder head with a sparkplug receptacle that has a generally frustoconical shape, and the pre-chamber is coupled to the sparkplug receptacle. The pre-chamber may include a cooling jacket with a generally frustoconical shape and a combustion chamber having an upper zone and a lower zone, which may be narrower than the upper zone.

Abstract: A system, comprising, a combustion chamber, and a free-radical injector configured to inject free radicals into the combustion chamber at an ignition timing to trigger combustion of a fuel-air mixture.

Abstract: A system, in certain embodiments, includes a piston clamping system including a piston rod comprising a piston rod shoulder and a piston rod nut coupled to the piston rod, wherein the piston rod nut and the piston rod shoulder are configured to axially capture first and second body portions of a piston therebetween.

Abstract: A system, in certain embodiments, includes a composite piston. The composite piston comprises a piston body made of a composite material, wherein the composite material comprises a reinforcing material distributed in a matrix material.

Abstract: A system, in certain embodiments, includes a compression cylinder configured to mount to a reciprocating compressor. The compression cylinder includes an intake port and a discharge port. The system also includes a piston assembly disposed within the compression cylinder. The piston assembly includes a piston configured to selectively block the intake port upon movement of the piston assembly relative to the compression cylinder.

Abstract: A system is provided that includes an exhaust system. The exhaust system includes a first and a second conduit configured to receive an exhaust from an engine having at least two cylinders and configured to operate at a range of less than 600 revolutions per minute. The exhaust system further includes a first chamber configured to receive the exhaust from the first and the second conduits, and a second chamber downstream of the first chamber and fluidly coupled to the first chamber by using a third conduit. The exhaust system additionally includes a third chamber downstream of the second chamber and fluidly coupled to the second chamber by using a fourth and a fifth conduit and an exhaust stack downstream of the third chamber and fluidly coupled to the third chamber.