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US 5,323,612 AGranted
Exhaust gas turbocharger arrangement
AssigneeMercedes-Benz AG
InventorJohannes Werner
Life of this patent
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Abstract
An exhaust gas turbocharger for an internal combustion engine is described, in the turbine housing of which there is arranged upstream of the turbine wheel a turbine guide wheel which is mounted rotatably relative to the turbine wheel. In order to be able to improve the response of the internal combustion engine after a positive load change without any impairment of the overall efficiency of the internal combustion engine, it is proposed to provide at least one braking device which reduces the speed of the turbine guide apparatus in higher load.
Claims17
Exhaust gas turbocharger arrangement for an internal combustion engine comprising:
- a turbine wheel, which is arranged in a turbine housing and to which the exhaust gas of the internal combustion engine is applied;
- a compressor wheel arranged in a compressor housing;
- a shaft connecting said turbine wheel in the turbine housing to said compressor wheel in the compressor housing;
- a turbine guide wheel, which is arranged in the turbine housing upstream of the turbine wheel and mounted rotatably relative thereto and whose rotational speed can be varied as a function of the load of the internal combustion engine;
- and
- at least one braking device which reduces the rotational speed of the turbine guide wheel, said at least one braking device being inoperative below a predetermined limit value for said load of the internal combustion engine, and operative above said predetermined limit value.
3 more elements
Dependencies are inferred from the claim text.