Abstract: A system, in certain embodiments, includes a low pressure exhaust gas recirculation (EGR) system configure to route exhaust gas upstream of a compressor coupled to an intake of an engine in a low temperature environment. The system also includes a high pressure EGR system configure to route exhaust gas downstream of the compressor and upstream of the intake at a high altitude and/or in a low pressure environment. The system, in some embodiments, also may include a flow control configured to change flow of the exhaust gas of the low pressure and high pressure EGR systems based on operating limits and environmental conditions including temperature and pressure.

Abstract: A system is provided. The system includes an internal combustion engine having an intake manifold and an exhaust manifold. The system also includes a high pressure turbocharger having a variable geometry high pressure turbine drivingly coupled to a high pressure compressor, wherein the variable geometry high pressure turbine is driven by a first portion of exhaust gases from the exhaust manifold, wherein the high pressure compressor is configured to compress an intake air and to provide the compressed intake air to the intake manifold.

Abstract: Disclosed herein is a system for generating energy, comprising a first heat exchanger in communication with a first heat source; wherein the first heat exchanger contacts a transfer fluid that comprises a working fluid and an associating composition; and a first energy conversion device comprising a piston in reciprocatory communication with a cylinder; the cylinder comprising an inlet or an outlet valve in operative communication with a cam having multiple lobes; the cam permitting the expansion or compression of the working fluid in the cylinder two or more times in a single cycle.

Abstract: Disclosed herein is a system for generating energy, comprising a first heat exchanger in thermal communication, fluid communication, or a combination of thermal and fluid communication with a first heat source; wherein the first heat exchanger contacts a transfer fluid that comprises a working fluid and an associating composition; and a first energy conversion device comprising a piston in reciprocatory communication with a cylinder; the cylinder comprising an inlet or an outlet valve in operative communication with a cam having multiple lobes; the cam permitting the expansion or compression of the working fluid in the cylinder two or more times in a single cycle.

Abstract: In accordance with one aspect of the present technique, a method of reducing pollutant emissions from a compression-ignition engine is provided. The method includes adjusting timing of fuel injection into a combustion chamber of a piston-cylinder assembly of the compression-ignition engine. The method of adjusting timing of fuel injection includes indexing a drive mechanism intercoupling a camshaft to a crankshaft by at least one tooth away from a standard position. The method of adjusting timing of fuel injection further includes adjusting a pre-stroke of a plunger of a fuel injector assembly.

Abstract: A method for co-producing hydrogen and electrical power comprises utilizing an intermittent renewable energy source to generate energy for producing hydrogen and oxygen and subsequently transferring at least a portion of the energy to a production system to produce the hydrogen and the oxygen. The current technique further comprises channeling at least a portion of the hydrogen to a hydrogen-delivery system configured to deliver the hydrogen from the hydrogen-delivery system to at least one of a power generation system or a hydrogen-storage system and channeling at least a portion of the oxygen to an oxygen delivery system configured to deliver the oxygen from the oxygen delivery system to a biomass gasification system that produces a synthesis gas by partial oxidation of a biomass feedstock. Further, this technique includes channeling at least a portion of the synthesis gas to the power generation system to produce electrical power therefrom.