摘要:
A turbocharger includes a compressor, a turbine, a shaft coupling the compressor to the turbine, and a turbo casing configured to improve pressure recovery and reduce energy loss from exhaust flow. In one embodiment, the turbo casing may include a geometry configured to improve exhaust flow towards an exhaust outlet. The turbo casing may include a torus shaped chamber having a cross-sectional area that progressively increases in an annular direction of the flow towards the exhaust outlet.
摘要:
A turbocharger is disclosed that includes a compressor, a turbine connected to the compressor by a mechanical shaft, and a fluidic drain valve in flow communication with an air bleed port of the compressor and an exhaust plenum to drain water accumulated inside the turbocharger such that water accumulated in the exhaust plenum is drained during shutdown when no air from the bleed port flows through the fluidic drain valve.
摘要:
Disclosed herein are turbocharger systems and methods for their operation. In one embodiment a turbocharger system is disclosed. The turbocharger system comprises a turbine, a compressor, an air inlet, a first sensor, a second sensor, and a controller. The turbine is mechanically connected to the compressor and the air inlet is connected in fluid communication to the compressor. The first sensor and the second sensor are connected in operational communication with the air inlet and disposed a sufficient distance from one another to be capable of measuring a temperature differential caused by a hot boundary layer. The controller is connected in operational communication with the first sensor and the second sensor, and the controller is configured to detect surge precursors.
摘要:
A method for monitoring functionality of a seal assembly within an injector feed assembly is described. The method includes providing a buffer fluid to the seal assembly, measuring at least one of a pressure and a flow rate of the buffer fluid, and determining a functionality of the seal assembly based at least partially on the at least one of a pressure and a flow rate of the buffer fluid.
摘要:
A diffuser (30) for a centrifugal compressor (60) having a flow slot (34) formed between the leading edge portion (36) of a diffuser vane (32) and an adjoining diffuser wall (70) for the passage of working fluid (67) over the vane from the pressure side ((40) to the suction side (42) of the vane. The portion (38) of the working fluid passing over the vane is injected into the flow boundary region (43), thereby minimizing the growth of a flow separation zone (58) along the suction side.
摘要:
Compressor wheel and techniques for manufacturing such a wheel are provided. The wheel may include a hub with a counterbore internally treated to impart residual compressive stresses for enhanced endurance to stress-induced fatigue. The surface treatment allows extending the counterbore relatively closer to a plane of typical maximum stress of the wheel. This design flexibility advantageously allows avoiding or reducing overhang of the compressor wheel, thereby improving rotor dynamics and reducing the axial length of the hub, and the overall foot print of the compressor wheel.
摘要:
An exemplary compressor is provided. The compressor includes a plurality of blades, a hub defining a front surface and a back surface, and a first flow restriction structure provided at the back surface of the hub. The plurality of blades are arranged in a predefined manner on the front surface for receiving input air flow at a first pressure and compressing the input air flow to provide an output air flow at a second pressure higher than the first pressure. The first flow restriction member is configured for preventing at least a portion of the output air flow at the second pressure from entering into the back surface of the hub to reduce an air pressure at the back surface of the hub.
摘要:
A system and method for monitoring at least one operating parameter indicative of an operating condition of an engine and controlling a turbocharger assist device to maintain desired operating conditions of the engine equipped with a turbocharger. In one embodiment, a controller is provided to control operation of a turbocharger assist device in an engine for generating electric power when an excess of energy exists in the exhaust of the engine to subtract work from a turbocharger drive shaft.
摘要:
A turbocharger is disclosed that includes a compressor, a turbine connected to the compressor by a mechanical shaft, and a fluidic drain valve in flow communication with an air bleed port of the compressor and an exhaust plenum to drain water accumulated inside the turbocharger such that water accumulated in the exhaust plenum is drained during shutdown when no air from the bleed port flows through the fluidic drain valve.
摘要:
A turbocharger system, in certain embodiments, includes a compressor, a turbine, a shaft of common diameter coupling the compressor to the turbine, and a first fluid film bearing disposed about the shaft at a compressor end portion of the shaft. The system also includes a second fluid film fixed pad bearing disposed about the shaft at a turbine end portion of the shaft, wherein the first and second fluid film fixed pad bearings have different clearance ratios, effective lengths, or both, relative to one another. The system, in some embodiments, includes a compressor fluid film fixed pad bearing and a turbine fluid film fixed pad bearing, wherein the compressor and turbine fluid film fixed pad bearings have different clearance ratios and effective lengths, relative to one another.