A turbocharger includes ported shroud compressor housing disposed about a compressor wheel, having an air inlet passage extending axially along and circumferentially about a longitudinal axis, volute base portion operably adjacent to compressor wheel, contour that encircles and complementarily matches compressor wheel, inducer including ring and plurality of extending members, inlet section extending from volute base portion, and recirculation cavity formed in volute base portion and inlet section with a recirculation slot and inlet slot for reentry of airflow into inlet section. The ring has an inner wall surface defining a first section extending axially along the longitudinal axis and proximate to the compressor wheel, second section extending from first section radially away from longitudinal axis, and third section extending from second section along longitudinal axis and distal to the compressor wheel. The inlet section has a first diameter and third section has a second diameter greater than first diameter.

An electric assist turbocharger unit for use in an internal combustion engine, comprising a shaft configured for torque-transmittingly connecting a compressor to a turbine of the turbocharger unit and an electric motor configured for rotatably actuating the shaft in a first rotational direction and in an opposed second rotational direction. The engine includes an aftertreatment system, and the rotation of the shaft is designed to retard the flow of intake air through an intake passage and of exhaust gases through the aftertreatment system, thereby controlling the temperature in the aftertreatment system.

An electric assist turbocharger unit for use in an internal combustion engine, comprising a shaft configured for torque-transmittingly connecting a compressor to a turbine of the turbocharger unit and an electric motor configured for rotatably actuating the shaft in a first rotational direction and in an opposed second rotational direction. The engine includes an aftertreatment system, and the rotation of the shaft is designed to retard the flow of intake air through an intake passage and of exhaust gases through the aftertreatment system, thereby controlling the temperature in the aftertreatment system.

The distribution cylinder (CDM) is a simplified, efficient and rational concept for insertion, top sealing and gas evacuation, for a new transformation of the internal combustion engine. It enables the extraction of ninety percent of the components from the old standardized system, which is more than a century and a half old, and which, until now, have performed these vital functions with the known limitations described in this study. The CDM lightens the structure and functionality of the engine, allowing manufacturers to save materials, production time, maintenance and fuel. It allows for the creation of powerful, faster and less polluting engines. It recommends that the four-stroke engine be recalibrated, considerably improving its performance. Thus equipped, it would naturally run faster since it would be freed from the mechanical limitations of its more resistant valve cylinder version The adoption of the timing cylinder, combined with the modern techniques developed for powering today's internal combustion engine, lays the foundation for a new generation of competitive yet lighter and more compact engines. Their torque will not only be more available but also more flexible to serve all uses and all engine sizes.

Some embodiments of the teachings herein include an apparatus for diagnosing bypass valve failure in an electric supercharger with a motor and an electric compressor comprising: a bypass valve on a bypass line branching from an intake line with the electric supercharger; and a control unit which assesses the vehicle-state information to determine whether failure criteria of a bypass valve start are satisfied. If the failure criteria are satisfied, the control unit transmits open or close control instructions to the bypass valve and transmits, to the electric supercharger, a specific rotational-speed target value for determining whether the bypass valve is in the normal open state or the normal closed state, thereby determining whether the bypass valve is subject to stuck-open failure or stuck-closed failure.

A turbine assembly for an internal combustion engine having: a first turbine that rotates around a first rotation axis and is configured to rotate due to the thrust exerted by exhaust gases emitted by the internal combustion engine; a second turbine which is independent of and separate from the first turbine, rotates around a second rotation axis parallel to and spaced from the first rotation axis, and is configured to rotate due to the thrust exerted by exhaust gases emitted by the internal combustion engine; an electric generator operated by the first turbine; and a transmission device that connects both the turbines to the same electric generator.

A turbine assembly for an internal combustion engine having: a first turbine that rotates around a first rotation axis and is configured to rotate due to the thrust exerted by exhaust gases emitted by the internal combustion engine; a second turbine which is independent of and separate from the first turbine, rotates around a second rotation axis parallel to and spaced from the first rotation axis, and is configured to rotate due to the thrust exerted by exhaust gases emitted by the internal combustion engine; an electric generator operated by the first turbine; and a transmission device that connects both the turbines to the same electric generator.

An electric turbomachine for use with an internal combustion engine, a turbocharger or a fuel cell e-compressor includes a high-speed electrical machine located internally within a housing that is arranged to be rotationally driven by a shaft about a rotational axis; a compressor that is arranged to compress fluid within a turbo compressor when it is rotationally driven about the rotational axis by the shaft; a power electronics assembly that is arranged to supply power to the electrical machine; and a control assembly that is arranged to control the power supplied by the power electronics assembly to the electrical machine. The power electronics assembly is mounted externally on the housing on a first surface of the housing, and the control assembly is mounted externally on the housing on a second surface of the housing.

An electric turbomachine for use with an internal combustion engine, a turbocharger or a fuel cell e-compressor includes a high-speed electrical machine located internally within a housing that is arranged to be rotationally driven by a shaft about a rotational axis; a compressor that is arranged to compress fluid within a turbo compressor when it is rotationally driven about the rotational axis by the shaft; a power electronics assembly that is arranged to supply power to the electrical machine; and a control assembly that is arranged to control the power supplied by the power electronics assembly to the electrical machine. The power electronics assembly is mounted externally on the housing on a first surface of the housing, and the control assembly is mounted externally on the housing on a second surface of the housing.

A turbocharger includes a turbine wheel configured to impart torque to a drive shaft, a compressor wheel configured to be driven by a driven shaft, a one-way clutch operatively connecting the drive shaft and the driven shaft such that the drive shaft can impart torque to the driven shaft and the driven shaft can overrun the drive shaft, and a motor-generator capable of imparting torque to the driven shaft or the compressor wheel, and/or generating an electric current. The motor-generator generates electric current via torque provided from the drive shaft. An energy storage device can be selectively regenerated by electric current generated by the motor-generator. The motor-generator is configured to alternately regenerate the energy storage device and drive the driven shaft at overrun speeds relative to the drive shaft. The turbine wheel can be driven by internal combustion engine (ICE) exhaust. An ICE may utilize a plurality of such turbochargers.