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US 2010/0140960 A1Published application
Engine generator set
AssigneeCummins Turbo Technologies Limited
InventorsMichael David Dolton, Raj Chauhan, Pierre Bernard French
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AssigneeCummins Turbo Technologies Limited
InventorsMichael David Dolton, Raj Chauhan, Pierre Bernard French
Estimating the term…
An engine generator set comprises an internal combustion engine (10) having an output shaft (12) that is coupled to an electrical generator (14) for producing an AC electrical power output’. The engine is operable to rotate the shaft (12) at a first rotational speed so that the generator (14) is driven to produce electrical power at a first frequency and a second rotational speed at which the generator is driven to produce electrical power at a second frequency. An exhaust gas turbocharger (11) is operatively connected to the engine (10) and has a compressor with a housing that defines a gas inlet (22). At least two guide, vane assemblies (40, 40′) that are releasably and interchangeably connectable to the inlet (22) to match the compressor performance with the first or second engine speed. The guide vanes of the first guide vane assembly extend in a downstream direction towards the impeller wheel (19) at an angle relative to the inlet that is different to the corresponding angle of the guide vanes second guide vane assembly (40).
An engine generator set comprising an internal combustion engine having an output shaft that is coupled to an electrical generator for producing an AC electrical power output, the engine being operable to rotate the shaft at a first rotational speed so that the generator is driven to produce electrical power at a first frequency and a second rotational speed at which the generator is driven to produce electrical power at a second frequency, the engine being operatively connected to an exhaust gas turbocharger, the turbocharger comprising an engine exhaust gas turbine connected to a compressor for rotation therewith, the compressor having a housing defining a gas inlet for directing gas flow to an impeller wheel mounted for rotation in the housing about an axis and an outlet for delivering compressed gas to the engine, wherein the compressor further comprises interchangeable first and second guide vane assemblies that are each releasably and selectively connectable to the inlet, guide vanes of the guide vane assemblies extending in a downstream direction from a leading edge towards the impeller wheel, the guide vanes of the first guide vane assembly extending in a first direction relative to the gas inlet and the guide vanes of the second guide vane assembly extending in a second direction relative to the gas inlet.
A compressor kit for an exhaust gas turbocharger for operation in an engine generator set, the engine generator set comprising an internal combustion engine having an output shaft that is coupled to an electrical generator for producing an AC electrical power output, the engine being operable to rotate the shaft at a first rotational speed so that the generator is driven to produce electrical power at a first frequency and a second rotational speed at which the generator is driven to produce electrical power at a second frequency, the engine being operatively connected the turbocharger, the compressor being connectable to a turbine of the turbocharger for rotation therewith, the compressor kit comprising a compressor having a housing defining an gas inlet for directing gas flow to an impeller wheel mounted for rotation in the housing about an axis and an outlet for delivering compressed gas to the engine, wherein the compressor kit further comprises first and second interchangeable guide vane assemblies that are selectively and releasably connectable to the inlet, guide vanes of the guide vane assemblies extending in a downstream direction from a leading edge towards the impeller wheel, the guide vanes of the first guide vane assembly extending in a first direction relative to the gas inlet and the guide vanes of the second guide vane assembly extending in a second direction relative to the gas inlet.
A method for operating an engine generator set to generate AC electrical power at a first frequency or a second frequency, the engine being operatively connected to an exhaust gas turbocharger, the turbocharger comprising an engine exhaust gas turbine connected to a compressor for rotation therewith, the compressor having a housing defining an inlet for directing gas flow to an impeller wheel for rotation about an axis in the housing and an outlet for delivering compressed gas to the engine, the method comprising the steps of configuring the engine to operate with an output shaft rotating at a first rotational speed so that the generator is driven to produce electrical energy at a first frequency, reconfiguring the engine generator set so that the engine operates with its output shaft rotating at a second rotational speed so that the generator is driven to produce electrical energy at a second frequency, and releasably connecting a guide vane assembly to the compressor inlet, the guide vanes of the guide vane assembly extending in a downstream direction from a leading edge towards the impeller wheel, the guide vanes extending in a direction relative to the gas inlet that is selected so as to match the compressor operation to the second rotational speed of the engine.
A compressor comprising:
Dependencies are inferred from the claim text.