Patent ID: 11933389
Assignee: DANA AUTOMOTIVE SYSTEMS GROUP, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 9:
10. A method for operation of a multi-speed gearbox, comprising:
shifting between two gear stages in a group of at least four stages in the multi-speed gearbox via engaging or sustaining engagement of each of a first clutch and a second clutch; and
shifting between two of the gear stages includes disengaging or sustaining disengagement of each of a third clutch and a fourth clutch in the multi-speed gearbox;
wherein the multi-speed gearbox includes:
a planetary assembly including:
a first gear set rotationally coupled to a second gear set;
the first clutch that is configured to selectively couple a first sun gear of the first gear set to an input shaft; and
the second clutch that is configured to selectively couple a second sun gear of the second gear set to an output shaft;

wherein the third clutch is configured to selectively couple the input shaft to the second sun gear of the second gear set; and
wherein the fourth clutch configured to selectively couple a carrier the second gear set to the output shaft.