Methods and systems are provided for a ducted fuel injector. In one example, the ducted fuel injector comprises a plurality of passages, with at least one of the passages configured to receive an oxygen poor gas from a reservoir or an adjacent cylinder to decrease a likelihood of pre-ignition in the duct.

Methods and systems are provided for a ducted fuel injector. In one example, the ducted fuel injector comprises a plurality of passages, with at least one of the passages configured to receive an oxygen poor gas from a reservoir or an adjacent cylinder to decrease a likelihood of pre-ignition in the duct.

Embodiments of a combustion section including a fuel injector assembly are provided. The combustion section includes the fuel injector assembly coupled to an outer casing and a liner assembly. The fuel injector assembly includes a body defining a first inlet opening and a second inlet opening spaced apart from one another along a first direction. The body further defines a fuel-oxidizer mixing passage therewithin extended along a second direction at least partially orthogonal to the first direction. The first inlet opening and the second inlet opening are each in fluid communication with the fuel-oxidizer mixing passage. The body defines an outlet opening at the fuel-oxidizer mixing passage at a distal end relative to the first inlet opening and the second inlet opening. The first inlet opening and the second inlet opening are each configured to admit a flow of oxidizer to the fuel-oxidizer mixing passage. The fuel-oxidizer mixing passage is configured to provide a flow of fuel-oxidizer mixture to a combustion chamber via the outlet opening.

Methods and devices are disclosed for introducing a compressor bypass flow that is returned from location that is downstream of a pressure source of an internal combustion engine to an air filter housing that is located upstream of the pressure source.

This intake apparatus for an internal combustion engine having a first bank and a second bank includes: an intake pipe including one new-air intake pipe, two branched pipes, and a junction connecting the new-air intake pipe to the two branched pipes; an EGR gas pipe connected to the junction; and a partitioning member placed around an opening in the EGR gas pipe that opens toward the intake pipe. The partitioning member defines an EGR gas storage chamber. The EGR gas storage chamber has first-bank and second-bank flow passages in which the EGR gas flows toward the first bank and the second bank. The first and second effective cross-sectional areas in the first-bank flow passage and the second-bank flow passage are smaller than the flow passage cross-sectional area in the opening of the EGR gas pipe.

Embodiments of a combustion section including a fuel injector assembly are provided. The combustion section includes the fuel injector assembly coupled to an outer casing and a liner assembly. The fuel injector assembly includes a body defining a first inlet opening and a second inlet opening spaced apart from one another along a first direction. The body further defines a fuel-oxidizer mixing passage therewithin extended along a second direction at least partially orthogonal to the first direction. The first inlet opening and the second inlet opening are each in fluid communication with the fuel-oxidizer mixing passage. The body defines an outlet opening at the fuel-oxidizer mixing passage at a distal end relative to the first inlet opening and the second inlet opening. The first inlet opening and the second inlet opening are each configured to admit a flow of oxidizer to the fuel-oxidizer mixing passage. The fuel-oxidizer mixing passage is configured to provide a flow of fuel-oxidizer mixture to a combustion chamber via the outlet opening.

Methods and devices are disclosed for introducing a compressor bypass flow that is returned from location that is downstream of a pressure source of an internal combustion engine to an air filter housing that is located upstream of the pressure source.

This intake apparatus for an internal combustion engine having a first bank and a second bank includes: an intake pipe including one new-air intake pipe, two branched pipes, and a junction connecting the new-air intake pipe to the two branched pipes; an EGR gas pipe connected to the junction; and a partitioning member placed around an opening in the EGR gas pipe that opens toward the intake pipe. The partitioning member defines an EGR gas storage chamber. The EGR gas storage chamber has first-bank and second-bank flow passages in which the EGR gas flows toward the first bank and the second bank. The first and second effective cross-sectional areas in the first-bank flow passage and the second-bank flow passage are smaller than the flow passage cross-sectional area in the opening of the EGR gas pipe.

The present invention pertains to a gas mixer for an internal combustion engine for mixing air with at least one admix gas, comprising a first duct segment having a first tube section and a first cone section, and a second duct segment having a second tube section and a second cone section. The first and second duct segments are stackable such that in a stacked state, a main gas conduit is formed by the first and second tube sections and an admix gas conduit is formed between the first cone section and the second duct segment. The present disclosure also pertains to a method for producing a gas mixer, comprising the steps of: for a predetermined mass flow of a gas to be admixed to air, calculating a flow cross section; machining at least one inner surface of an admix gas conduit such that at any position, the admix gas conduit comprises at least the calculated flow cross section; stacking two duct segments to provide the gas mixer. The present disclosure also pertains to a duct segment for being used in the gas mixer.

Apparatuses, systems, and methods for providing pressurized air from a vehicle. The apparatus includes an engine block including a plurality of cylinders, a plurality of pistons each disposed within a respective one of the plurality of cylinders, a crankshaft rotatably mounted on the engine block, a plurality of connecting rods each having a first end and a second end, the first end rotatably connected to the crankshaft and the second end coupled to a respective one of the plurality of pistons, a fuel and air mixture intake line in communication with at least one cylinder of the plurality of cylinders, an air intake line in communication with the at least one cylinder, an exhaust line in communication with the at least one cylinder, a switch, and a switch controller. The switch controller may cause the switch to switch between a fuel and air mixture configuration and an air-only configuration.