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US 9,599,207 B2Granted
Manual transmission with torque converter
AssigneeAvl Power Train Engineering, Inc.
InventorGregory Mordukhovich
Life of this patent
Estimating the term…
Abstract
A power transmitting device for a vehicle having a power plant and a drivetrain is provided. The power transmitting device includes an output shaft that provides torque to the drivetrain and a manual transmission selectable between a first gear set having a first gear ratio and a second gear set having a second gear ratio that transmits power to the output shaft at different rotational speeds. The power transmitting device also includes a hydraulic torque converter that multiplies torque. Torque is multiplied through the torque converter and is transmitted to the output shaft from the torque converter when the first gear set is selected and is not multiplied through the torque converter when the second gear set is selected.
Claims22
A power transmitting device for a vehicle having a power plant and a drivetrain, the power transmitting device comprising:
- a power member that receives torque from the power plant;
- an output member spaced from said power member that supplies torque to the drivetrain;
- a manual transmission that transmits torque to said output member at different rotational speeds, said manual transmission including at least a first gear set having a first gear ratio and a second gear set having a second gear ratio that is different from said first gear ratio;
- and
- a torque converter including an impeller, a turbine opposite said impeller that is rotatable relative to said impeller, and a stator that multiplies torque at said turbine when said impeller is rotating at a different speed than said turbine,
- wherein torque from said power member is multiplied through said torque converter and is transmitted to said output member when said first gear set is selected, and
- wherein torque from said power member is not multiplied through said torque converter when said second gear set is selected.
4 more elements
A power transmitting device for a vehicle having a power plant and a drivetrain, the power transmitting device comprising:
- a power member that receives torque from the power plant;
- an input member that is coupled to said power member;
- an output member spaced from said power member and said input member that supplies torque to the drivetrain;
- a manual transmission that transmits torque to said output member at different rotational speeds, said manual transmission including at least a first gear set having a first gear ratio, a second gear set having a second gear ratio that is different from said first gear ratio, and a reverse gear set;
- and
- a torque converter including an impeller that is rotatably coupled to said power member and that receives torque from said power member, a turbine opposite said impeller that is rotatable relative to said impeller and that is rotatably coupled to said first gear set, and a stator that is rotatably coupled to said input member by a one-way clutch and that multiplies torque at said turbine when said impeller is rotating at a different speed than said turbine,
- wherein torque from said power member is multiplied through said torque converter and is transmitted to said output member when one of said first gear set and said reverse gear set is selected, and
- wherein torque from said power member is not multiplied through said torque converter when said second gear set is selected.
5 more elements
A power transmitting device for a vehicle having a power plant and a drivetrain, the power transmitting device comprising:
- a power member that receives torque from the power plant;
- an input member that is coupled to said power member;
- an output member spaced from said power member and said input member that supplies torque to the drivetrain;
- a manual transmission that transmits torque to said output member at different rotational speeds, said manual transmission including at least a first gear set having a first gear ratio and a second gear set having a second gear ratio that is different from said first gear ratio;
- and
- a torque converter including an impeller that is coupled to said input member by said first gear set, a turbine opposite said impeller that is rotatable relative to said impeller and that is selectively coupled to said input member by said second gear set, and a stator that is coupled to said first gear set by a one-way clutch and that multiplies torque at said turbine when said impeller is rotating at a different speed than said turbine,
- wherein torque from said power member is multiplied through said torque converter and is transmitted to said output member when said first gear set is selected, and
- wherein torque from said power member is not multiplied through said torque converter when said second gear set is selected.
5 more elements
A power transmitting device for a vehicle having a power plant and a drivetrain, the power transmitting device comprising:
- a power member that receives torque from the power plant;
- an output member spaced from said power member that supplies torque to the drivetrain;
- a manual transmission that transmits torque to said output member at different rotational speeds, said manual transmission including at least a first gear set having a first gear ratio and a second gear set having a second gear ratio that is different from said first gear ratio;
- and
- a torque converter including an impeller, a turbine opposite said impeller that is rotatable relative to said impeller, and a stator that multiplies torque at said turbine when said impeller is rotating at a different speed than said turbine,
- wherein torque from said power member is multiplied through said torque converter and is transmitted to said output member when said first gear set is selected,
- wherein torque from said power member is not multiplied through said torque converter when said second gear set is selected, and
- wherein torque from said power member is transmitted to said output member independent of said torque converter when said second gear is selected.
5 more elements
A power transmitting device for a vehicle having a power plant and a drivetrain, the power transmitting device comprising:
- a power member that receives torque from the power plant;
- an output member spaced from said power member that supplies torque to the drivetrain;
- a manual transmission that transmits torque to said output member at different rotational speeds, said manual transmission including at least a first gear set having a first gear ratio, a second gear set having a second gear ratio that is different from said first gear ratio, and an input member that is selectively coupled to said first gear set and said second gear set;
- a torque converter connected in series with said manual transmission including an impeller rotatably coupled to said power member, a turbine opposite said impeller that is rotatable relative to said impeller and that is rotatably coupled to said input member, and a stator fixed to a ground that multiplies torque at said turbine when said impeller is rotating at a different speed than said turbine;
- a lock-up clutch rotatably coupled to said impeller and said turbine that has an engaged state where said lock-up clutch locks rotation of said impeller with said turbine such that torque from said power member is transmitted to said impeller and is transmitted through said lock-up clutch to said turbine and a disengaged state where said lock-up clutch permits rotation of said impeller relative to said turbine such that torque from said power member is transmitted to said impeller, is multiplied in said torque converter, and is transmitted to said turbine;
- and
- a lock-up actuator connected to said lock-up clutch wherein said lock-up actuator switches said lock-up clutch to said disengaged state when said first gear set is selected and said engaged state when said second gear set is selected.
4 more elements
Dependencies are inferred from the claim text.