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US 2011/0011073 A1Published application
Interactive parasitic devices for engine performance improvement
AssigneeInternational Truck Intellectual Property Company, LLC
InventorsJames C. Bradley, Rodney J. Klinger
Life of this patent
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Abstract
A motor vehicle power take off system for a motor vehicle engine includes a viscous coupling. The input rotor of the viscous coupling is provided with a variable geometry impeller section which allows direct control over the proportion of input torque on the input shaft transferred to the viscous fluid and thereby to an output shaft. Both passive and active control schemes are proposed.
Claims14
A fluid coupling comprising:
- an operating chamber;
- an input rotor mounted for rotation in the operating chamber;
- an output rotor mounted for rotation in the operating chamber;
- a working fluid substantially filling the operating chamber for coupling torque from the input rotor to the output rotor;
- and
- a configurable impeller section mounted with the input rotor for rotation with the input rotor, the impeller section allowing a selected portion of rotating energy of the input rotor to be transferred to the working fluid.
3 more elements
A motor vehicle power take off system, comprising:
- an engine;
- a linkage from the engine for turning a rotatable input shaft;
- a viscous coupling including an operational chamber;
- the rotatable input shaft being connected to turn an input rotor in the operational chamber;
- a rotatable output rotor and an output shaft, the rotatable output rotor being located in the operational chamber;
- a working fluid in the operational chamber for coupling the input rotor and the output rotor;
- and
- a variable geometry impeller section installed on the input rotor, the variable geometry impeller section being configurable for varying an amount of input torque applied to the input rotor and transferred to the working fluid.
5 more elements
Dependencies are inferred from the claim text.