摘要:
A turbocharger assembly includes a center housing rotating assembly, which comprises a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft; an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour; a compressor contour plug that defines an axial inlet for the compressor and a compressor contour; and a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open and preventing exhaust gas from bypassing the turbine wheel when the wastegate unit is closed.
摘要:
An turbocharger cartridge and engine cylinder head assembly includes a turbocharger cartridge that includes some but not all of the components of a turbocharger, while the engine cylinder head provides the components of the turbocharger that are not included in the cartridge. The cartridge includes a center housing rotating assembly having a shaft that joins a turbine wheel to a compressor wheel, the shaft passing through bearings housed in the center housing. The engine cylinder head defines a receptacle that receives the cartridge. The head also defines a diffuser and volute for the compressor, and a turbine volute. The cartridge defines a turbine nozzle and turbine contour, and further includes a wastegate unit as a part of the cartridge.
摘要:
A turbocharger includes a single-stage compressor formed by a single centrifugal compressor wheel in a compressor housing, a turbine formed by a turbine wheel in a turbine housing, and a center housing disposed between the compressor and turbine housings. The compressor includes a volute that receives pressurized air, via a diffuser, from the compressor wheel for onward delivery to an air intake of an engine. In one embodiment the compressor volute is reversed relative to a conventional location, such that the volute is displaced to the turbine side of the diffuser rather than to the compressor side. In another embodiment the compressor volute (whether reversed or not) is integrated into the center housing and accordingly the compressor housing is a simple cap having a tubular portion that defines an inlet to the compressor and a flange portion that connects to the center housing.
摘要:
A turbocharger assembly includes a center housing rotating assembly, which comprises a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft; an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour; a compressor contour plug that defines an axial inlet for the compressor and a compressor contour; and a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open and preventing exhaust gas from bypassing the turbine wheel when the wastegate unit is closed.
摘要:
An engine cylinder head and turbocharger assembly includes a turbocharger having a turbine housing, wherein part of the turbine housing is integrated into a casting of the engine cylinder head. The turbocharger is arranged with respect to the engine cylinder head such that the rotational axis of the turbocharger is transverse to the engine axis along which the engine cylinders are spaced. A compressor housing of the turbocharger is oriented toward an air intake side of the engine cylinder head, and the turbine housing is oriented toward an exhaust side of the engine cylinder head.
摘要:
An engine cylinder head and turbocharger assembly includes a turbocharger having a turbine housing, wherein part of the turbine housing is integrated into a casting of the engine cylinder head. The turbocharger is arranged with respect to the engine cylinder head such that the rotational axis of the turbocharger is transverse to the engine axis along which the engine cylinders are spaced. A compressor housing of the turbocharger is oriented toward an air intake side of the engine cylinder head, and the turbine housing is oriented toward an exhaust side of the engine cylinder head.
摘要:
An turbocharger cartridge and engine cylinder head assembly includes a turbocharger cartridge that includes some but not all of the components of a turbocharger, while the engine cylinder head provides the components of the turbocharger that are not included in the cartridge. The cartridge includes a center housing rotating assembly having a shaft that joins a turbine wheel to a compressor wheel, the shaft passing through bearings housed in the center housing. The engine cylinder head defines a receptacle that receives the cartridge. The head also defines a diffuser and volute for the compressor, and a turbine volute. The cartridge defines a turbine nozzle and turbine contour, and further includes a wastegate unit as a part of the cartridge.
摘要:
A turbocharger system is disclosed, including a turbine and compressor and a rotary valve unit. The rotary valve unit comprises a fixed valve seat and a rotary valve member arranged coaxially with the valve seat. The valve member is disposed against the valve seat and is rotatable about the axis for selectively varying a degree of alignment between respective orifices in the valve seat and valve member. The valve unit includes a valve housing that defines a first flow passage and a second flow passage, and the valve member and valve seat are disposed in the second flow passage. A turbocharger system is also disclosed, including a turbine and compressor and the rotary valve unit. The rotary valve unit is coupled with the turbine such that exhaust gas that has passed through the turbine wheel is fed into the first flow passage of the rotary valve unit, and exhaust gas that has bypassed the turbine wheel is fed into the second flow passage of the rotary valve unit.
摘要:
A turbocharger system is disclosed, including a turbine and compressor and a rotary valve unit. The rotary valve unit comprises a fixed valve seat and a rotary valve member arranged coaxially with the valve seat. The valve member is disposed against the valve seat and is rotatable about the axis for selectively varying a degree of alignment between respective orifices in the valve seat and valve member. The valve unit includes a valve housing that defines a first flow passage and a second flow passage, and the valve member and valve seat are disposed in the second flow passage. A turbocharger system is also disclosed, including a turbine and compressor and the rotary valve unit. The rotary valve unit is coupled with the turbine such that exhaust gas that has passed through the turbine wheel is fed into the first flow passage of the rotary valve unit, and exhaust gas that has bypassed the turbine wheel is fed into the second flow passage of the rotary valve unit.
摘要:
A turbocharger cartridge and engine cylinder head assembly includes a turbocharger cartridge having a center housing defining a bore therethrough, bearings housed in the bore, a shaft rotatably supported in the bearings, a compressor wheel affixed to one end of the shaft, and a turbine wheel affixed to an opposite end of the shaft. The engine cylinder head defines a receptacle in which the turbocharger cartridge is disposed. The cartridge defines a cartridge oil circuit and the engine cylinder head defines an engine oil circuit. An oil circuit connector plug is removably installed in a socket in the head, the plug defining a connector passage that mates up with an oil supply conduit in the engine cylinder head and with an oil supply passage in the center housing such that oil is conducted from the oil supply conduit through the connector passage to the bore.