In a hybrid vehicle, each of an engine and an MG1 is mechanically coupled to a drive wheel with a planetary gear being interposed. The planetary gear and an MG2 are configured such that motive power output from the planetary gear and motive power output from the MG2 are transmitted to the drive wheel as being combined. The engine includes a turbocharger, an EGR valve, and a WGV. When opening of the EGR valve exceeds first opening, a controller maintains opening of the WGV at second opening or larger.

In a hybrid vehicle, each of an engine and an MG1 is mechanically coupled to a drive wheel with a planetary gear being interposed. The planetary gear and an MG2 are configured such that motive power output from the planetary gear and motive power output from the MG2 are transmitted to the drive wheel as being combined. The engine includes a turbocharger, an EGR valve, and a WGV. When opening of the EGR valve exceeds first opening, a controller maintains opening of the WGV at second opening or larger.

Methods and systems are provided for merging recirculated exhaust gas (EGR) with fresh intake air in an intake passage. In one example, a method may include introducing EGR to the intake passage via an angled annular slot and flowing unmixed EGR and ambient air through an intake compressor inlet. Ambient air may flow to a center of the intake compressor while the EGR may flow along a periphery of the intake compressor inlet.

Methods and systems are provided for merging recirculated exhaust gas (EGR) with fresh intake air in an intake passage. In one example, a method may include introducing EGR to the intake passage via an angled annular slot and flowing unmixed EGR and ambient air through an intake compressor inlet. Ambient air may flow to a center of the intake compressor while the EGR may flow along a periphery of the intake compressor inlet.

An intake manifold provided in an internal combustion engine to be mounted in a vehicle includes: a plurality of intake-air branch pipes; an EGR chamber configured such that EGR gas is introduced into the EGR chamber; and a plurality of EGR ports communicating the plurality of intake-air branch pipes with the EGR chamber. A chamber bottom face is provided with a plurality of recessed zones so as to correspond to the plurality of EGR ports, each of the plurality of recessed zones is provided near an opening of its corresponding EGR port on an chamber side, and all planes constituting the each of the plurality of recessed zones is configured to be inclined so as to be placed on a mounting lower side toward a position closer to the opening, as compared with a position away from the opening.

Systems and methods for treated exhaust gas recirculation (EGR) for an internal combustion engine are disclosed. The internal combustion engine has an exhaust manifold discharging exhaust gas and an intake manifold receiving forced air from a compressor. One or more exhaust treatment devices treat the exhaust gas and produce a treated exhaust gas. The EGR system includes an EGR line downstream of the one or more exhaust treatment devices and connected to the engine intake line downstream of the compressor, wherein the treated EGR line recirculates the treated exhaust gas to the intake manifold of the engine without passing through the compressor.

Systems and methods for treated exhaust gas recirculation (EGR) for an internal combustion engine are disclosed. The internal combustion engine has an exhaust manifold discharging exhaust gas and an intake manifold receiving forced air from a compressor. One or more exhaust treatment devices treat the exhaust gas and produce a treated exhaust gas. The EGR system includes an EGR line downstream of the one or more exhaust treatment devices and connected to the engine intake line downstream of the compressor, wherein the treated EGR line recirculates the treated exhaust gas to the intake manifold of the engine without passing through the compressor.

A method of assisting ignition of a dedicated exhaust gas recirculation (D-EGR) cylinder in a spark-ignited internal combustion engine. The spark igniter has an internal air passage that receives pressurized air and carries the pressurized air down to an exit port in the vicinity of the spark gap of the igniter.

A method of assisting ignition of a dedicated exhaust gas recirculation (D-EGR) cylinder in a spark-ignited internal combustion engine. The spark igniter has an internal air passage that receives pressurized air and carries the pressurized air down to an exit port in the vicinity of the spark gap of the igniter.

A valve assembly includes a valve housing defining a flow passage configured to receive exhaust gas from an internal combustion engine, and defining a bore extending along a bore axis and fluidly coupled to said flow passage. The valve assembly also includes a valve body for controlling the flow of exhaust gas through the bore, and a shaft coupled to the valve body. The valve body is moveable between a closed position and an open position when the shaft rotates about the axis. The vale assembly additionally includes a first biasing member coupled to the shaft and configured to bias the shaft along the shaft axis in a first direction, and a second biasing member coupled to the shaft and configured to bias the valve body in the first direction along the shaft axis.