Abstract: An insert device includes a body having an upper body portion configured to couple with a cylinder head of an engine cylinder and a lower body portion extending from the upper body portion toward a combustion chamber of the engine cylinder. The body includes an interior surface extending around a central volume positioned to receive liquid fuel from a fuel injector. The body includes gas inlet channels and fuel-and-gas mixture outlet channels. The gas inlet channels direct gas into the central volume where the gas mixes with the liquid fuel to form the fuel-and-gas mixture. The fuel-and-gas mixture outlet channels direct the mixture into the combustion chamber. The interior surface includes concave surface portions between the inlet channels and the outlet channels along a center axis of the body that are shaped to direct the gas into the central volume toward the liquid fuel in the central volume.

Abstract: An insert device may include a body coupled with an engine cylinder head. The body has an interior surface shaped to receive and engage a distal tip of a fuel injector. The body has gas conduits and mixture conduits with gas conduits extending from inlets along an exterior surface to outlets that intersect the mixture conduits. The mixture conduits extend from inlets along an interior surface of the body to outlets on the exterior surface. The gas conduits are positioned to direct gases outside of the body into the mixture conduits. The mixture conduits are positioned to receive fuel from spray holes of the fuel injector. The mixture conduits can entrain the gas with the fuel into a fuel-and-gas mixture that is directed out of the outlets of the mixture conduits and into a combustion chamber of an engine cylinder.

Abstract: A piston cooling jet is provided that may include a housing having an interior chamber that receives a fluid from an external source, and a conduit coupled with the housing and fluidly coupled with the interior chamber, the conduit having a bent shape to direct the fluid from the interior chamber of the housing toward an underside of an engine piston head. The piston cooling jet may also include a flow straightening nozzle coupled with the conduit and positioned to straighten flow of the fluid exiting from the conduit via the nozzle toward the underside of the engine piston head, the flow straightening nozzle having internal intersecting walls that intersect along a direction of the flow of the fluid in the conduit and out of the flow straightening nozzle.

Abstract: An insert device includes a first coupling body inserted into an engine cylinder head. The first coupling body extends around a center axis to define a first interior volume of the first coupling body that is shaped to receive a distal tip of a fuel injector. The insert device includes a second mixing body coupled with the first coupling body and extending around the center axis. The second mixing body includes conduits that receive fuel from the fuel injector and air from a combustion chamber, combine the fuel with the air, and direct the fuel-air mixture into the combustion chamber. The first coupling body has a first end surface positioned to face the cylinder head and the first coupling body is tapered such that an outer diameter of the first coupling body is larger toward the first end surface than toward the second mixing body.

Abstract: An insert device includes a body having an upper body portion configured to couple with a cylinder head of an engine cylinder and a lower body portion extending from the upper body portion toward a combustion chamber of the engine cylinder. The body includes an interior surface extending around a central volume positioned to receive liquid fuel from a fuel injector. The body includes gas inlet channels and fuel-and-gas mixture outlet channels. The gas inlet channels direct gas into the central volume where the gas mixes with the liquid fuel to form the fuel-and-gas mixture. The fuel-and-gas mixture outlet channels direct the mixture into the combustion chamber. The interior surface includes concave surface portions between the inlet channels and the outlet channels along a center axis of the body that are shaped to direct the gas into the central volume toward the liquid fuel in the central volume.

Abstract: An insert device includes a first coupling body inserted into an engine cylinder head. The first coupling body extends around a center axis to define a first interior volume of the first coupling body that is shaped to receive a distal tip of a fuel injector. The insert device includes a second mixing body coupled with the first coupling body and extending around the center axis. The second mixing body includes conduits that receive fuel from the fuel injector and air from a combustion chamber, combine the fuel with the air, and direct the fuel-air mixture into the combustion chamber. The first coupling body has a first end surface positioned to face the cylinder head and the first coupling body is tapered such that an outer diameter of the first coupling body is larger toward the first end surface than toward the second mixing body.

Abstract: A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.

Abstract: A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.

Abstract: A method or process may be provided that includes forming a first sinterable equipment part using a first manufacturing method, and forming a second equipment part using a second manufacturing method. The sinterable first equipment part may then be heated while securing the first equipment part to the second equipment part to form a monolithic equipment part.

Abstract: A piston cooling jet is provided that may include a housing having an interior chamber that receives a fluid from an external source, and a conduit coupled with the housing and fluidly coupled with the interior chamber, the conduit having a bent shape to direct the fluid from the interior chamber of the housing toward an underside of an engine piston head. The piston cooling jet may also include a flow straightening nozzle coupled with the conduit and positioned to straighten flow of the fluid exiting from the conduit via the nozzle toward the underside of the engine piston head, the flow straightening nozzle having internal intersecting walls that intersect along a direction of the flow of the fluid in the conduit and out of the flow straightening nozzle.

Abstract: A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.

Abstract: A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.

Abstract: A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.

Abstract: A thermal expansion/pressure compensator includes a body having an inlet at a first connection point and an outlet at a second connection point. The body includes a flexible member extending along a portion of the body. The body has an internal chamber configured to receive a fluid via the inlet. The internal chamber is shaped to direct fluid through the flexible member and out of the body via the outlet. The flexible member is configured to flex responsive to expansion of the body. The compensator also includes a rigid member operably coupled with the body. The rigid member is thermally and fluidly isolated from the body and the flexible member. The body, the flexible member, and the rigid member are formed as a unitary structure.

Abstract: A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.

Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one example, an exhaust gas recirculation cooler includes a first section, arranged proximate to an exhaust gas inlet of the EGR cooler and including a first plurality of tubes and a first plurality of fins coupled to the first plurality of tubes, where at least one of the first plurality of tubes and the first plurality of fins are comprised of a first material that has a first coefficient of thermal expansion (CTE); and a second section, arranged downstream of the first section and including a second plurality of tubes and a second plurality of fins coupled to the second plurality of tubes, where the second plurality of tubes and the second plurality of fins are comprised of a second material that has a second CTE, the second CTE greater than the first CTE.

Abstract: Methods and systems are provided for operating a vehicle including an engine comprising a turbocharger including a compressor and a turbine. The engine further includes a bypass path configured to selectively route gas from downstream of the compressor to upstream of the turbine. In one embodiment, the method comprises selectively increasing gas flow to the engine by adjusting gas flow through the bypass path from downstream of the compressor to upstream of the turbine. In this manner, the performance of the engine may be adjusted for various operating conditions.

Abstract: Various methods and systems are provided for a drain system for an EGR system of an engine system. In one example, the drain system includes a connector fluidly coupled to each of an intake system, an exhaust system, and a fluid collector, where the connector is positioned vertically below an intake manifold of the intake system and an exhaust passage of the exhaust system and vertically above the fluid collector with respect to a surface on which an engine sits.

Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one example, an exhaust gas recirculation cooler includes an exhaust gas inlet and an exhaust gas outlet spaced from the exhaust gas inlet; a plurality of cooling tubes disposed between the exhaust gas inlet and exhaust gas outlet; and a baffle positioned proximate to the exhaust gas inlet and interposed between the plurality of cooling tubes and the exhaust gas inlet, where the baffle directs exhaust gas entering the EGR cooler through the exhaust gas inlet to the plurality of cooling tubes in a defined path.