TRANSMISSION CONTROL SYSTEM AND METHOD THEREOF
9 Assignments
0 Petitions
Accused Products
Abstract
A method of managing a transmission ratio with an assisted CVT with a governed engine to emulate a hydrostatic transmission and prevent a drivebelt abuse is provided, the method comprising: providing a reference power source rotational speed, using the assisted CVT to transmit rotatable motion between a power source and a drive mechanism, managing a torque of the power source to maintain a substantially even rotational speed upon a power source load variation and modulating a transmission ratio of the assisted CVT to change the rotational speed of the drive mechanism. A system and a vehicle having such a drivebelt abuse preventing mechanism is also provided.
30 Citations
39 Claims
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1-19. -19. (canceled)
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20. A method of managing a transmission ratio with an assisted CVT adapted to transmit motive power between a power source and a drive mechanism, the method comprising:
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managing a power source torque output, the power source being operatively connected to a drive mechanism, to maintain a substantially constant power source rotational speed upon a drive mechanism load variation; and managing a transmission ratio of the assisted CVT to change the rotational speed of the drive mechanism. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A system for emulating a hydrostatic transmission comprising:
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an assisted CVT adapted to interconnect a power source with a drive mechanism, the power source being adapted to be maintained at a substantially constant rotational speed; a management module adapted to manage the assisted CVT; an engagement behavior control, operatively connected to the management module, adapted to manage an engagement of the assisted CVT; a power source rotational speed control connected to the management module; and a drive mechanism ratio control connected to the management module, the assisted CVT ratio, adapted to define the rotational speed of the drive mechanism, being made on the basis of an actuation of the drive mechanism ratio control. - View Dependent Claims (35, 36, 37)
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- 38. A vehicle including a power source and an assisted CVT capable of emulating an hydrostatic transmission, the power source being adapted to remain at a substantially constant rotational speed while managing a torque provided by the power source to react to a load applied to the power source by a drive mechanism, the assisted CVT being adapted to backshift to reduce the load applied to the power source by the drive mechanism when the load applied to the power source by the drive mechanism reduces the rotational speed of the power source.
Specification