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US 7,272,987 B2Granted
Hybrid powertrain system
AssigneeEaton Corporation
InventorDouglas A. Hughes
Life of this patent
Estimating the term…
Abstract
A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.
Claims32
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, an output member and a second input shaft;
- a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft;
- an output clutch operably positioned between the first input shaft and the output member, wherein at least one of the first and second input shafts is configured for connection to a second prime mover, wherein the first input shaft and the output member are generally co-axial;
- and
- an input shaft clutch positioned between the first input shaft and the second input shaft to selectively fix rotation of the first and second input shafts.
2 more elements
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, a second input shaft, and an output member, wherein the output member is coupled to a driveshaft for rotation therewith;
- a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft;
- an output clutch operably positioned between the first input shaft and the output member such that the first input shaft may be coupled for rotation at about the same speed as a driveshaft, wherein at least one of the first and second input shafts is operably connected to a second prime mover, and wherein the first input shaft and the output member are generally co-axial;
- and
- an input shaft clutch positioned between the first input shaft and the second input shaft to selectively fix rotation of the first and second input shafts.
2 more elements
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, a second input shaft, and an output member, wherein the output member is coupled to a driveshaft for rotation therewith;
- a twin clutch that includes a first main clutch configured to selectively transfer torque between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer torque between the first prime mover and the second input shaft;
- and
- an output clutch operably positioned between the first input shaft and the output member such that the first prime mover and a second prime mover selectively transmit torque to a driveshaft without the transfer of torque through a meshed gear ratio.
1 more element
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, an output member and a second input shaft;
- a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft;
- and
- an output clutch operably positioned between the first input shaft and the output member, wherein at least one of the first and second input shafts is configured for connection to a second prime mover, wherein the first input shaft and the output member are generally co-axial, wherein the first input shaft includes at least one first input gear and the second input shaft includes at least one second input gear, and wherein the transmission also includes a countershaft having at least two countershaft gears, and wherein each of the first and second input gears are meshed with a corresponding countershaft gear.
1 more element
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, an output member and a second input shaft;
- a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft;
- and
- an output clutch operably positioned between the first input shaft and the output member, wherein at least one of the first and second input shafts is configured for connection to a second prime mover, wherein the first input shaft and the output member are generally co-axial, and wherein the second prime mover selectively transfers a torque to a driveshaft to hold the vehicle at rest on a grade when both the first main clutch and the second main clutch are disengaged.
1 more element
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, a second input shaft, and an output member, wherein the output member is coupled to a driveshaft for rotation therewith;
- a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft;
- and
- an output clutch operably positioned between the first input shaft and the output member such that the first input shaft may be coupled for rotation at about the same speed as a driveshaft, wherein at least one of the first and second input shafts is operably connected to a second prime mover, and wherein the first input shaft and the output member are generally co-axial, wherein the second prime mover may selectively rotate the output member in a reverse rotational direction and the second prime mover may selectively counter-rotate the output member in an opposite rotational direction without the use of an idler gear.
1 more element
A transmission and clutch arrangement for a dual prime mover powertrain system, comprising:
- a change-gear transmission having a first input shaft, a second input shaft, and an output member, wherein the output member is coupled to a driveshaft for rotation therewith;
- a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft;
- and
- an output clutch operably positioned between the first input shaft and the output member such that the first input shaft may be coupled for rotation at about the same speed as a driveshaft, wherein at least one of the first and second input shafts is operably connected to a second prime mover, and wherein the first input shaft and the output member are generally co-axial, wherein the second prime mover selectively holds the vehicle at rest on a grade when both the first main clutch and the second main clutch are disengaged.
1 more element
Dependencies are inferred from the claim text.