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US 2023/0356708 A1Published application
Independent clutch and power device control of a multi-mode electro-mechanical infinitely variable transmission operating without electric energy storage device
AssigneeDana Belgium N.V.
InventorsSimon CHERLET, Nicolas LENAERTS, Stijn GOOSSENS, Bert HANNON
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Abstract
A method and system for operating a multi-mode electro-mechanical infinitely variable transmission (EMIVT) that is coupled to an engine and includes two electric machines is described. In one example, operating modes of the two electric machines are controlled without regard to vehicle speed and system conditions that are external to the two electric machines.
Claims20
A method for operating a driveline, comprising:
- operating an engine in a torque control mode while switching control modes of a first electric machine and a second electric machine in response to a speed of the first electric machine and a speed of the second electric machine.
A driveline, comprising:
- a transmission including a first electric machine, a second electric machine, a planetary gear set, and a DC voltage bus;
- an internal combustion engine coupled to the transmission;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to operate the first electric machine in a first electric machine voltage control mode and the second electric machine in a second electric machine torque control mode in response to a speed of the second electric machine being less than a second threshold speed for voltage regulation of the DC voltage bus and a speed of the first electric machine being greater than a first threshold speed for voltage regulation of the DC voltage bus while operating the internal combustion engine in an engine torque control mode.
1 more element
A method for operating a driveline, comprising:
- operating an engine in a torque control mode while switching control modes of a first electric machine and a second electric machine in response to a speed of the first electric machine and a speed of the second electric machine;
- and
- transferring electric power between the first electric machine and the second electric machine while the first electric machine and the second electric machine are not electrically coupled to a battery.
Dependencies are inferred from the claim text.