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US 5,685,404 AGranted
Power transmission system for use with a manual transmission including a torque convertor
AssigneeExedy Corporation
InventorHirotaka Fukushima
Life of this patent
Estimating the term…
Abstract
A power transmission system 1 includes a lock-up clutch 5, an elastic coupling mechanism 7, a torque converter 4 and a torque disengaging clutch 6. The lock-up clutch 5 is coupled to a power output shaft 2 so as to receive torque from the power input shaft 2. The elastic coupling mechanism 7 is coupled to the lock-up clutch 5 so as to receive torque from the lock-up clutch 5 and is capable of being deformed in circular directions. The torque converter 4 is coupled to the power output shaft 2 so as to receive torque from the power output shaft 2. The torque disengaging clutch 6 is coupled to the elastic coupling mechanism 7 and the torque converter 4 so as to receive torque from them respectively and is further coupled to a power input shaft 3 of a transmission.
Claims13
A power transmission system comprising:
- a power input section including a flywheel;
- an elastic coupling mechanism connected to said power input section;
- a power output section connected to a manual transmission input shaft, said power output section connected to said elastic coupling mechanism wherein said power output section includes a selectively operable disengaging clutch and at least a turbine of a torque converter, said turbine connected to said disengaging clutch;
- a lock-up clutch disposed within said power output section connected to said elastic coupling mechanism and said turbine, and an impeller of said torque converter being part of said power input section;
- and wherein
- the ratio of the moment of inertia of said power input section to the moment of inertia of said power output section provides a resonance frequency of the power transmission system less than or equal to an idle speed of an engine providing torque to the power transmission system.
3 more elements
A power transmission system comprising:
- a power input section including a flywheel;
- an elastic coupling mechanism connected to said power input section;
- a power output section connected to a manual transmission input shaft said power output section connected to said elastic coupling mechanism wherein said power output section includes a selectively operable disengaging clutch and at least a turbine of a torque converter, said turbine connected to said disengaging clutch;
- a lock-up clutch disposed within said power output section connected to said elastic coupling mechanism and said turbine, and an impeller of said torque converter being part of said power output section;
- and wherein
- the ratio of the moment of inertia of said power input section to the moment of inertia of said power output section provides a resonance frequency of the power transmission system less than or equal to an idle speed of an engine providing torque to the power transmission system.
3 more elements
A power transmission system for transmitting torque from an engine to a manual transmission, comprising:
- a lock-up clutch having a lock-up input and a lock-up output, said lock-up input being connected to a flywheel;
- an elastic coupling mechanism connected to said lock-up output;
- a torque converter having an impeller and a turbine, said impeller connected to said flywheel and said lock-up input, and
- a disengaging clutch having an input side and an output side, said input side connected to said elastic coupling mechanism and said turbine and said output side connected to a manual transmission input shaft;
- wherein said elastic coupling mechanism, said lock-up clutch and said disengaging clutch are disposed proximate to an outer radial portion of said turbine of said torque converter.
2 more elements
A power transmission system for transmitting torque from an engine to a manual transmission, comprising:
- an elastic coupling mechanism connected to a flywheel;
- a torque converter having a turbine and an impeller, said impeller connected to said flywheel;
- a lock-up clutch having a lock-up input and a lock-up output, said lock-up input connected to said elastic coupling mechanism and said lock-up output connected to said turbine;
- and
- a disengaging clutch having an input side and an output side, said input side connected to said turbine and said lock-up output and said output side connected to a manual transmission input shaft
- wherein said elastic coupling mechanism, said lock-up clutch and said disengaging clutch are disposed proximate to an outer radial portion of said turbine of said torque converter.
3 more elements
A power transmission system for transmitting torque from an engine to a manual transmission, comprising:
- an elastic coupling mechanism connected to a flywheel;
- a torque converter having an impeller and a turbine, said impeller coupled to said elastic coupling mechanism;
- a lock-up clutch having a lock-up input and a lock-up output, said lock-up input connected to said elastic coupling mechanism and said impeller, and
- a disengaging clutch having an input side and an output side, said input side connected to said turbine and said lock-up output and said output side coupled to a manual transmission input shaft;
- and
- wherein said elastic coupling mechanism, said lock-up clutch and said disengaging clutch are disposed proximate to an outer radial portion of said turbine of said torque converter.
3 more elements
A torque converter comprising:
- a power input member, a power output member, an impeller and a turbine, said power input member being connected to a flywheel supported on a shaft of an engine;
- a lock-up clutch having an input and an output, said input and said impeller both connected to said power input member;
- an elastic member connected to said output of said lock-up clutch, said turbine connected to said elastic member such that said elastic member allows for limited rotary displacement between said lock-up clutch and said turbine;
- a disengaging clutch having a clutch input and a clutch output, said clutch input connected to said turbine and said clutch output connected to said power output member;
- and
- wherein where said disengaging clutch is in a disengaged state said turbine may rotate freely with respect to said power output member;
- where said disengaging clutch is in an engaged state said turbine is mechanically coupled to said power output member for rotation therewith;
- and
- where a power input section is defined by the flywheel, the shaft of the engine and said lock-up clutch, said power input section having a moment of inertia;
- a power output section is defined by said disengaging clutch and said power output member, said power output section having a moment of inertia;
- said elastic member is disposed between said power input section and said power output section;
- the ratio of the moment of inertia of said power input section, to the moment of inertia of said power output section provides a resonance frequency of the torque converter less than or equal to an idle speed of the engine providing torque to the torque converter;
- and
- wherein said lock-up clutch and said disengaging clutch are disposed proximate a radially outward portion of said turbine.
11 more elements
A torque converter comprising:
- a power input member, a power output member, an impeller and a turbine, said power input member being connected to a flywheel supported on a shaft of an engine;
- an elastic member, said elastic member and said impeller both connected to said power input member;
- a lock-up clutch having an input and an output, said input connected to said elastic member and said output connected to said turbine, said elastic member allowing for limited rotary displacement between said lock-up clutch and said power input member;
- a disengaging clutch having a clutch input and a clutch output, said clutch input connected to said turbine and said clutch output connected to said power output member;
- and
- wherein where said disengaging clutch is in a disengaged state said turbine may rotate freely with respect to said power output member;
- where said disengaging clutch is in an engaged state said turbine is mechanically coupled to said power output member for rotation therewith;
- and
- where a power input section is defined by the flywheel and the shaft of the engine, said power input section having a moment of inertia;
- a power output section is defined by said disengaging clutch, said lock-up clutch and said power output member, said power output section having a moment of inertia;
- said elastic member is disposed between said power input section and said power output section;
- the ratio of the moment of inertia of the combination of said power input section, to the moment of inertia of said power output section provides a resonance frequency of the torque converter less than or equal to an idle speed of the engine providing torque to the torque converter.
9 more elements
A torque converter comprising:
- a power input member, a power output member, an impeller and a turbine, said power input member being connected to a flywheel supported on a shaft of an engine;
- an elastic member, said elastic member connected to said power input member and said impeller, said elastic member allowing for limited rotary displacement between said impeller and said power input member;
- a lock-up clutch having an input and an output, said input connected to said elastic member and said impeller, and said output connected to said turbine,
- a disengaging clutch having a clutch input and a clutch output, said clutch input connected to said turbine and said clutch output connected to said power output member;
- and
- wherein where said disengaging clutch is in a disengaged state said turbine may rotate freely with respect to said power output member;
- where said disengaging clutch is in an engaged state said turbine is mechanically coupled to said power output member for rotation therewith;
- and
- where a power input section is defined by the flywheel and the shaft of the engine, said power input section having a moment of inertia;
- a power output section is defined by said disengaging clutch, said lock-up clutch and said power output member, said power output section having a moment of inertia;
- said elastic member is disposed between said power input section and said power output section;
- the ratio of the moment of inertia of said power input section, to the moment of inertia of said power output section provides a resonance frequency of the torque converter less than or equal to an idle speed of the engine providing torque to the torque converter.
9 more elements
Dependencies are inferred from the claim text.