Vehicle with hybrid powertrain
First Claim
Patent Images
1. A hybrid vehicle having front and rear wheels, comprising:
- a front drive axle assembly continuously connected with the front wheels;
a rear drive axle assembly continuously connected with the rear wheels;
an engine;
a transmission having;
a motor/generator;
a stationary member;
a planetary gear set having a ring gear member, a sun gear member, and a carrier member, at least one of the members of the planetary gear set being continuously connected to one of said axle assemblies; and
a plurality of selectively engagable torque-transmitting mechanisms;
wherein said engine and said motor/generator are separately selectively directly connectable to a respective different one of said members of said planetary gear set by engagement of a respective different one of said torque-transmitting mechanisms to transfer torque to said one of said drive axle assemblies; and
wherein at least one of said engine and said motor/generator is selectively connectable to the other of said drive axle assemblies by engagement of another one of said torque-transmitting mechanisms to transfer torque to the other of said drive axle assemblies.
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Abstract
A hybrid vehicle is provided with an engine, as well as a transmission having a motor/generator, a stationary member, and a planetary gear set. The engine and the motor/generator are separately selectively connectable to one of the drive axle assemblies by engagement of different ones of the torque-transmitting mechanism to transfer torque to that drive axle assembly. One or both of the engine and the motor/generator is also selectively connectable to the other drive axle assembly by engagement of another one of the torque-transmitting mechanisms to transfer torque to the other of drive axle assembly.
35 Citations
19 Claims
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1. A hybrid vehicle having front and rear wheels, comprising:
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a front drive axle assembly continuously connected with the front wheels; a rear drive axle assembly continuously connected with the rear wheels; an engine; a transmission having; a motor/generator; a stationary member; a planetary gear set having a ring gear member, a sun gear member, and a carrier member, at least one of the members of the planetary gear set being continuously connected to one of said axle assemblies; and a plurality of selectively engagable torque-transmitting mechanisms; wherein said engine and said motor/generator are separately selectively directly connectable to a respective different one of said members of said planetary gear set by engagement of a respective different one of said torque-transmitting mechanisms to transfer torque to said one of said drive axle assemblies; and wherein at least one of said engine and said motor/generator is selectively connectable to the other of said drive axle assemblies by engagement of another one of said torque-transmitting mechanisms to transfer torque to the other of said drive axle assemblies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hybrid powertrain for a vehicle having a front axle assembly connected with front wheels and a rear axle assembly connected with rear wheels comprising:
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an engine; a transmission having; a simple planetary gear set with a sun gear member, a carrier member and a ring gear member; a motor/generator; a stationary member; and a plurality of selectively engagable torque-transmitting mechanisms each engagable to directly connect one of the engine and the motor/generator with one of the members of the planetary gear set for common rotation, or to directly connect one of the members of the planetary gear set with the stationary member; said planetary gear set having one of said members continuously directly connected for delivering torque to one of said front axle assembly and said rear axle assembly; wherein at least one of said engine and said motor/generator is alternately operatively connectable to said front axle assembly and said rear axle assembly by engagement of different ones of said torque-transmitting mechanisms for delivering torque to or receiving torque from said front axle assembly and said rear axle assembly, respectively; and wherein the torque-transmitting mechanisms are engagable in different combinations to provide different operating modes including an electric-only operating mode, and at least one electrically-variable operating mode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A hybrid vehicle comprising:
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a front drive axle assembly; a rear drive axle assembly; an engine; a transmission having; a motor/generator; a stationary member; a first and a second simple planetary gear set each having a ring gear member, a sun gear member, and a carrier member, at least one of the members of each planetary gear set being directly connected to a different one of said drive axle assemblies, respectively; and a plurality of selectively engagable torque-transmitting mechanisms; wherein said engine and said motor/generator are separately selectively connectable to one of said planetary gear sets by engagement of different ones of said torque-transmitting mechanisms to transfer torque to said drive axle assembly connected with said one of said planetary gear sets;
wherein the transmission is characterized by the absence of any additional motor/generator operable to transfer torque to any of the drive assemblies;wherein said motor/generator is selectively directly connectable to the other of said planetary gear sets by engagement of another one of said torque-transmitting mechanisms to transfer torque to the said drive axle assembly connected with said other of said planetary gear sets; and wherein said motor/generator is not continuously connected to any of said members of any of said planetary gear sets.
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Specification