Convertible transmission system
First Claim
1. A convertible transmission system for a vehicle comprising:
- a transmission having an input shaft for connection to an engine and an output shaft for delivering power to at least one axle, said transmission having a plurality of available gear ratios resulting in a maximum number of available gear ratios;
a programmable controller for selectively controlling said transmission to operate in a first operating configuration utilizing a first predetermined number of said available gear ratios and a second operating configuration utilizing a second predetermined number of said available gear ratios, wherein said first predetermined number of said available gear ratios is greater than said second predetermined number.
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Accused Products
Abstract
A convertible transmission system for a vehicle having an input shaft for connection to an engine and an output shaft for delivering rotational power to at least one axle. The transmission has a plurality of available gear ratios resulting in a maximum number of available gear ratios. In addition, a programmable controller is provided for selectively controlling the transmission to operate in a first operating configuration utilizing a first predetermined number of the available gear ratios that is less than the maximum number of available gear ratios. Moreover, the programmable control can have additional transmission configurations by selectively modifying certain operating characteristics, including for example, available gear ratios, desired operating gear ratios, maximum torque limits, shift points, default starting gear ratio, data relating to a predetermined shift strategy, a coast down gear ratio, shift delay timing, and/or skip shifting.
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Citations
27 Claims
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1. A convertible transmission system for a vehicle comprising:
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a transmission having an input shaft for connection to an engine and an output shaft for delivering power to at least one axle, said transmission having a plurality of available gear ratios resulting in a maximum number of available gear ratios;
a programmable controller for selectively controlling said transmission to operate in a first operating configuration utilizing a first predetermined number of said available gear ratios and a second operating configuration utilizing a second predetermined number of said available gear ratios, wherein said first predetermined number of said available gear ratios is greater than said second predetermined number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A convertible transmission system for a vehicle comprising:
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a transmssion having an input shaft for connection to an engine and an output shaft for delivering power to at least one axle, said transmission having a plurality of gear ratios resulting in a maximum number of available gear ratios;
a programmable controller for selectively controlling said transmission to operate in a first operating configuration utilizing the maximum number of available gear ratios and a second operating configuration utilizing less than the maximum number of available gear ratios. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A convertible transmission system for a vehicle comprising:
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transmission having an input shaft for connection to an engine and an output shaft for delivering rotational power to at least one axle, said transmission having a plurality of gear ratios resulting in a maximum number of available gear ratios;
a programmable controller for selectively controlling said transmission to operate in a first operating configuration utilizing a first predetermined number of said available gear ratios that is less than the maximum number of available gear ratios. - View Dependent Claims (22, 23)
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24. A method of operating a transmission having a plurality of available gear ratios resulting in a maximum number of available gear ratios comprising the steps of:
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selecting a first predetermined set of desired gear ratios from the plurality of available gear ratios for establishing a first transmission operating configuration;
determining a change in at least one operating condition that necessitates selecting a second predetermined set of desired gear ratios from the plurality of available gear ratios for establishing a second transmission operating configuration. - View Dependent Claims (25, 26, 27)
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Specification