An electronic compressor bypass valve (eCBV) module includes a pedestal housing, and a compressor bypass valve mounted to the pedestal housing. An inlet port, a first outlet port, and a second outlet port are integrally formed as part of the pedestal housing, where pressurized air flows into the inlet port. The eCBV module also includes a venturi device at least partially disposed in the second outlet port. When the compressor bypass valve is in an open position, a portion of the pressurized air flows through the first outlet port, and a portion of the pressurized air flows from the inlet port through the venturi device and through the second outlet port. When the compressor bypass valve is in the closed position the pressurized air is prevented from flowing into the first outlet port, and all of the pressurized air flows through the venturi device and through the second outlet port.

An electronic compressor bypass valve (eCBV) module includes a pedestal housing, and a compressor bypass valve mounted to the pedestal housing. An inlet port, a first outlet port, and a second outlet port are integrally formed as part of the pedestal housing, where pressurized air flows into the inlet port. The eCBV module also includes a venturi device at least partially disposed in the second outlet port. When the compressor bypass valve is in an open position, a portion of the pressurized air flows through the first outlet port, and a portion of the pressurized air flows from the inlet port through the venturi device and through the second outlet port. When the compressor bypass valve is in the closed position the pressurized air is prevented from flowing into the first outlet port, and all of the pressurized air flows through the venturi device and through the second outlet port.

A turbocharger engine includes a dual stage turbocharger in which a first turbo unit is disposed on the upstream side of a second turbo unit on an exhaust passage. The turbocharger is disposed in such a manner that a second turbine shaft of the second turbo unit is far from an engine output shaft than a first turbine shaft of the first turbo unit in a plan view in an axis direction of a cylinder. Further, a second turbine is rotated clockwise around an axis thereof in a side view when the turbocharger is viewed from the side of the turbine, and an intra-turbine passage is disposed on the side of an engine body than the second turbine shaft.

An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.

A controller sets a target operation position and controls an operation position of a wastegate in accordance with the target operation position in a position control mode. The controller sets a target drive force and controls a drive force of the wastegate in accordance with the target drive force in a drive force control mode. The controller controls the wastegate in the position control mode when a boost pressure of an engine is less than or equal to a preset value and controls the wastegate in the drive force control mode when the boost pressure is greater than the preset value.

An internal combustion engine includes a twin-scroll turbocharger with a flow control valve along the larger of the two scrolls. At low engine speeds, the valve is closed so that all exhaust gases are routed through the smaller scroll. At higher engine speeds, the valve opens to reduce back pressure and provide the desired boost in the power band of the engine. The overall swallowing capacity of the turbine is disproportionally divided between the scrolls, such as a 75/25 split between the large and small scrolls.

In an internal combustion engine with exhaust gas turbochargers which operate in parallel and of which at least one can be switched on and off by a charge air duct blocking arrangement including a charge air duct blocking element, the charge air duct blocking arrangement is adapted to provide for a certain movement characteristic of the charge air duct blocking element resulting in a slower movement of the charge air duct blocking element resulting in a longer duration for the air duct blocking element to reach its open position and a faster movement during closing resulting in a rapid closing of the charge air duct blocking element.

A supercharged internal combustion engine has cylinder groups with plural cylinders and plural exhaust gas turbochargers. Exhaust gas can be fed to at least one first exhaust gas turbocharger from first outlet valves of the cylinders of the first and second cylinder groups via at least one first exhaust manifold. Exhaust gas can be fed to at least one second exhaust gas turbocharger from second outlet valves of cylinders of the first and second cylinder groups via a second exhaust manifold. At low rotational speeds and/or in part load and/or non-steady state operation, exhaust gas can be fed via the first exhaust manifolds that are connected to the first outlet valves per cylinder group to a turbine of the first exhaust gas turbocharger in flows that can be divided in the inflow region of the turbine, while the second exhaust gas turbocharger is inactive.

When the forced induction mode is a single forced induction mode, and when it is determined that there is a request for switching to a twin forced induction mode, the control device executes a process including the step of executing an approach-run operation, the step of executing a control for equalizing the VN opening degree, and the step of switching to the twin forced induction mode when it is determined that a second boost pressure has reached a first boost pressure.

A charging system (20) of an internal combustion engine has a compressor (22) that compresses intake air (41) to a pressure higher than a boost pressure of the internal combustion engine. A first energy recovery turbine (25) recovers energy from an exhaust gas mass flow (45) discharged from a cylinder (12). The compressor (22) and the first energy recovery turbine (25) are disposed on a first shaft (31) and the recovered energy is transmitted directly to the compressor (22). A cooling turbine (24) expands and cools the (intake) air (41) compressed by the compressor (22) to the boost pressure required by the cylinder (12). A second energy recovery turbine (26) recovers energy from the exhaust gas mass flow (45). The second energy recovery turbine (26) and the cooling turbine (24) are on a common second shaft (32), and the second shaft (32) is coupled to at least one energy sink.