Patent · US Active

Transmission and method of engagement

US10093287B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Scott Patrick Ries · South Lyon, US
Kendrick Morrison · Wayne, US

Key dates

Filing date	Feb 6, 2014
Grant date	Oct 9, 2018
Priority date	—
Expiry date	Feb 29, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/0059
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

While a transmission range selector is in a Park position, a controller engages multiple transmission shift elements to place the transmission in a tie-up state. In the tie-up state, both the transmission output shaft and the turbine shaft are held against rotation by the shift elements. To transition from Park to Drive, the controller releases one of the shift elements to place the transmission in a 1st gear state. To transition from Park to Reverse, the controller releases a different one of the shift elements to place the transmission in a reverse state. The controller may wait until the driver releases the brake pedal to release the shift element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.