Start and operation sequences for hybrid motor vehicles
First Claim
1. A vehicular hybrid powertrain system, comprising:
- a first prime mover having an output;
a multi-ratio transmission having an input;
a second prime mover having an output operably connected to the transmission input through a first power path and to the first prime mover output through a second power path, the first power path configured to receive power from the second prime mover during a first operating mode to drive rotation of the transmission input and the second power path configured to receive power from the second prime mover during a second operating mode to drive rotation of the first prime mover output; and
wherein the second prime mover output is configured to rotate in a first direction in the first operating mode to transmit power to the first power path and in a second direction opposite the first direction in the second operating mode to transmit power to the second power path.
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Accused Products
Abstract
A hybrid powertrain system includes a first prime mover having an output, a multi-ratio transmission having an input, and a second prime mover having an output connected to the first prime mover output through a first power path and to the transmission input through a second power path. The first power path receives power from the second prime mover during a first operating mode to drive rotation of the transmission input and the second power path receives power from the second prime mover during a second operating mode to drive rotation of the first prime mover output. The second prime mover output is configured to rotate in a first direction in the first operating mode to transmit power to the first power path and in a second direction in the second operating mode to transmit power to the second power path.
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Citations
29 Claims
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1. A vehicular hybrid powertrain system, comprising:
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a first prime mover having an output;
a multi-ratio transmission having an input;
a second prime mover having an output operably connected to the transmission input through a first power path and to the first prime mover output through a second power path, the first power path configured to receive power from the second prime mover during a first operating mode to drive rotation of the transmission input and the second power path configured to receive power from the second prime mover during a second operating mode to drive rotation of the first prime mover output; and
wherein the second prime mover output is configured to rotate in a first direction in the first operating mode to transmit power to the first power path and in a second direction opposite the first direction in the second operating mode to transmit power to the second power path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicular hybrid powertrain system, comprising:
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a first prime mover having an output;
a multi-ratio transmission having an input;
a second prime mover operably connected to the transmission input through a first power path and to the first prime mover output through a second power path, the first power path configured to receive power from the second prime mover during a first operating mode to drive rotation of the transmission input and the second power path configured to receive power from the second prime mover during a second operating mode to drive rotation of the first prime mover output;
a second prime mover driven countershaft for transmitting power from the second prime mover to the first and second power paths;
a first overrunning clutch positioned between the countershaft and the second power path, the first overrunning clutch configured to engage and transmit power from the second prime mover to the second power path when the countershaft is rotating in a first direction and to disengage and prohibit power from being transmitted from the second prime mover to the second power path when the countershaft is rotating in a second direction opposite the first;
a second overrunning clutch positioned between the first prime mover output and the transmission input, the second overrunning clutch configured to engage and transmit power between the first prime mover output and the transmission input when the first prime mover output and the transmission input are rotating at a first predetermined speed and to disengage and prohibit power from being transmitted between the first prime mover output and the transmission input when the first prime mover output and the transmission input are rotating at a second predetermined speed; and
wherein the second prime mover is configured to rotate the countershaft in the first direction in the first operating mode to transmit power to the first power path and in the second direction opposite the first direction in the second operating mode to transmit power to the second power path. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of operating a vehicular hybrid powertrain system, comprising:
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providing a first prime mover having an output, a multi-ratio transmission having an input, and a second prime mover having an output operably connected to the transmission input through a first power path and to the first prime mover output through a second power path, the first power path configured to receive power from the second prime mover during a first operating mode to drive rotation of the transmission input and the second power path configured to receive power from the second prime mover during a second operating mode to drive rotation of the first prime mover output;
rotating the output of the second prime mover in a first direction during the first mode of operation to drive rotation of the transmission input; and
rotating the output of the second prime mover in a second direction opposite the first direction during the second mode of operation to drive rotation of the first prime mover output. - View Dependent Claims (23, 24)
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25. A method of operating a vehicular hybrid powertrain system, comprising:
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providing a first prime mover having an output, a multi-ratio transmission having an input, and a second prime mover having an output operably connected to the transmission input through a first power path and to the first prime mover output through a second power path, the first power path configured to receive power from the second prime mover during a first operating mode to drive rotation of the transmission input and the second power path configured to receive power from the second prime mover during a second operating mode to drive rotation of the first prime mover output, providing a second prime mover driven countershaft for transmitting power from the second prime mover to the first and second power paths, a first overrunning clutch positioned between the countershaft and the second power path, the first overrunning clutch configured to engage and transmit power from the second prime mover to the second power path when the countershaft is rotating in a first direction and to disengage and prohibit power from being transmitted from the second prime mover to the second power path when the countershaft is rotating in a second direction opposite the first, and a second overrunning clutch positioned between the first prime mover output and the transmission input, the second overrunning clutch configured to engage and transmit power between the first prime mover output and the transmission input when the first prime mover output and the transmission input are rotating at a first predetermined speed and to disengage and prohibit power from being transmitted between the first prime mover output and the transmission input when the first prime mover output and the transmission input are rotating at a second predetermined speed;
rotating the output of the second prime mover in a first direction during the first mode of operation to drive rotation of the transmission input; and
engaging the first overrunning clutch and rotating the output of the second prime mover in a second direction opposite the first direction during the second mode of operation to drive rotation of the first prime mover output. - View Dependent Claims (26, 27, 28, 29)
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Specification