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US 2019/0337376 A1Published application
Multi-mode powertrains
AssigneeDeere & Company
InventorThomas G. Ore
Life of this patent
Estimating the term…
Abstract
A powertrain includes an engine, a continuously variable power source (CVP), an output shaft, and a transmission. The transmission is configured to provide selection between one of a plurality of transmission modes in which the transmission transmits power from at least one of the engine and the CVP to the output shaft. Multiple components, such as variators, clutches, and the like are disposed coaxially.
Claims20
A powertrain comprising:
- an engine;
- a continuously variable power source (CVP);
- an output shaft;
- and
- a transmission configured to provide selection between one of a plurality of transmission modes in which the transmission transmits power from at least one of the engine and the CVP to the output shaft;
- the transmission including a variator that is operably connected to the engine and the CVP, the variator including at least one variator output member configured to rotate under power from at least one of the engine and the CVP;
- the transmission including a first transmission component and a second transmission component, both having an engaged position and a disengaged position;
- the plurality of transmission modes including a first transmission mode in which the second transmission component is in the disengaged position and the first transmission component is in the engaged position to transmit power from the at least one variator output member toward the output shaft to drivingly rotate the output shaft within a first speed range;
- the plurality of transmission modes including a second transmission mode in which the first transmission component is in the disengaged position and the second transmission component is in the engaged position to transmit power from the at least one variator output member toward the output shaft to drivingly rotate the output shaft within a second speed range, the second speed range being higher than the first speed range;
- and
- the first transmission component and the second transmission component being substantially coaxial with the at least one variator output member.
8 more elements
A powertrain comprising:
- an engine with an engine shaft;
- an output shaft that is substantially parallel to and spaced apart at a distance from the engine shaft;
- a continuously variable power source (CVP);
- and
- a transmission configured to provide selection between one of a plurality of transmission modes in which the transmission transmits power from at least one of the engine and the CVP to the output shaft, the transmission including:
- a variator that is operably connected to the engine and the CVP;
- and
- a first transmission component and a second transmission component, both configured to engage for power transmission from the variator to the output shaft, both configured to disengage to disconnect the variator from the output shaft;
- the plurality of transmission modes including a first transmission mode in which the second transmission component is disengaged and the first transmission component is engaged to transmit power from the variator toward the output shaft to drivingly rotate the output shaft;
- the plurality of transmission modes including a second transmission mode in which the first transmission component is disengaged and the second transmission component is engaged to transmit power from the variator toward the output shaft to drivingly rotate the output shaft;
- and
- the variator, the first transmission component, and the second transmission component being substantially coaxial with the output shaft.
9 more elements
Dependencies are inferred from the claim text.