A turbine includes: a turbine blade wheel housed in a housing unit; two turbine scroll flow paths wound radially outward with respect to the turbine blade wheel and connected at positions different from each other in a circumferential direction in an outer circumferential portion of the housing unit; and two scroll outlets each communicating one of the two turbine scroll flow paths with the housing unit, the two scroll outlets formed along the circumferential direction, at least one of the two scroll outlets having a height distribution in which a height in an axial direction is lower than a surrounding height at at least one of an upstream end or a downstream end.

A bearing device for a turbocharger according to one embodiment of the present invention includes: a rotational shaft; a journal bearing device including a compressor-side journal bearing and a turbine-side journal bearing; a bearing housing including a compressor-side bearing supporting portion, a turbine-side bearing supporting portion, and a bearing housing main body; and a lubricant oil guide member extending along a circumference direction of the rotational shaft, at an outer circumference side of at least one of the compressor-side bearing supporting portion and the turbine-side bearing supporting portion. When a virtual line extending vertically downward from a rotational center CL of the rotational shaft is defined as a reference line VL in a state where an oil discharge port is orientated downward, the lubricant oil guide member extends from the reference line VL along the circumference direction toward each of one side and another side of the reference line VL over a predetermined angle θ about the rotational center CL of the rotational shaft.

A turbocharger according to an embodiment of the present invention includes a rotating shaft, a compressor, a turbine, a compressor-side floating bearing and a turbine-side floating bearing that rotatably support the rotating shaft, and a bearing housing that houses the compressor-side floating bearing and the turbine-side floating bearing, the bearing housing being internally provided with a turbine-side oil feeding passage through which oil to be fed to the turbine-side floating bearing flows and a compressor-side oil feeding passage through which oil to be fed to the compressor-side floating bearing flows. A ratio of an oil feeding pressure for oil at an outlet of the compressor-side oil feeding passage to an oil feeding pressure for oil at an outlet of the turbine-side oil feeding passage is configured to be higher than 1.0 and lower than 1.5.

A venting system for a turbocharger may include a bearing housing. The bearing housing may include an inner member. A housing wall may extend from the inner member and may include at least one vent disposed therethrough. A partition may be sealed to the housing wall and the inner member. The partition, the housing wall, and the inner member may collectively form a thermal dam.

A system includes an engine defining a water jacket fluidly coupled to a heat exchanger. An exhaust manifold defines an exhaust manifold cooling passage. A pump is fluidly coupled to the water jacket, and to each of the heat exchanger and the exhaust manifold cooling passage. An engine cooling circuit includes the water jacket, the heat exchanger, and the pump. An exhaust cooling circuit is selectively fluidly coupled to the engine cooling circuit. The exhaust cooling circuit includes the water jacket, the exhaust manifold cooling passage, and the pump. A control valve includes an inlet fluidly coupled to a first portion of the water jacket. A first outlet is fluidly coupled to a second portion of the water jacket. A second outlet is fluidly coupled to the exhaust cooling circuit. The control valve is structured to selectively control flow of coolant fluid through the second outlet.

An e-charger includes a motor case that encases the motor and an outer housing that houses the motor case. The e-charger additionally includes a cooling system with passages cooperatively defined by the outer housing and the motor case. First and second longitudinal passages extend between the first and second ends of the motor, and a second longitudinal passage extends between the second and first ends of the motor. The end passage fluidly connects the first and second longitudinal passage. The cooling system is configured for directing flow of the coolant from the inlet, through the first longitudinal passage in a first longitudinal direction with respect to the axis, through the end passage, and back through the second longitudinal passage in a second longitudinal direction with respect to the axis.

Disclosed is a turbocharger for an internal combustion engine comprising a turbine having a turbine housing and a diffusor. The turbine housing comprises an exhaust gas outlet volume, and the diffusor is arranged in this volume. A housing orifice and a diffusor orifice are arranged through each of the turbine housing and diffusor respectively and are mutually aligned to provide an opening into the exhaust gas outlet volume. The turbocharger further comprises a bushing arranged within the housing orifice and extending towards the diffusor orifice and ending at a first end in association with the diffusor orifice. The first end of bushing has an internal diameter that is greater than or equal to a diameter of the diffusor orifice.

Disclosed is a turbocharger for an internal combustion engine comprising a turbine having a turbine housing and a diffusor. The turbine housing comprises an exhaust gas outlet volume, and the diffusor is arranged in this volume. A housing orifice and a diffusor orifice are arranged through each of the turbine housing and diffusor respectively and are mutually aligned to provide an opening into the exhaust gas outlet volume. The turbocharger further comprises a bushing arranged within the housing orifice and extending towards the diffusor orifice and ending at a first end in association with the diffusor orifice. The first end of bushing has an internal diameter that is greater than or equal to a diameter of the diffusor orifice.

On an inner circumferential surface (25a) of a housing (25) opposed to an outer circumferential surface (37a, 37b) of an outer ring, toward a front side in a rotation direction (B) of a rotation shaft (21), a first groove (41H, 41I) is formed as a groove portion for guiding an oil (39) in a direction toward a first oil supply hole (41D, 41E).

A power delivery system includes a turbocharger assist device and an inverter. The turbocharger assist device is mechanically connected to a turbocharger that is operably coupled to an engine, and is configured to generate electric current based on rotation of a rotor of the turbocharger. The inverter is electrically connected to the turbocharger assist device via a bus, and is configured to receive the electric current generated by the turbocharger assist device via the bus and supply the electric current to power a load.