Transmission oil delivery control system and method
AssigneeGM Global Technology Operations LLC
InventorRichard A. Weaver
Life of this patent
Estimating the term…
Abstract
A control system for a transmission of a vehicle including an engine includes a deceleration fuel cutoff (DFCO) module and an accumulator module. The DFCO module initiates a DECO period of engine operation. The accumulator module increases a working pressure of a transmission accumulator in response to a start of the DFCO period. A method for controlling a transmission of a vehicle including an engine includes initiating a DECO period of engine operation, and increasing a working pressure of a transmission accumulator in response to a start of the DFCO period.
Claims20
A control system for a transmission of a vehicle including an engine, comprising:
- a deceleration fuel cutoff module that initiates a deceleration fuel cutoff period of engine operation;
- and
- an accumulator module that increases a working pressure of a transmission accumulator in response to a start of said deceleration fuel cutoff period.
A method for controlling a transmission of a vehicle including an engine, comprising:
- initiating a deceleration fuel cutoff period of engine operation;
- and
- increasing a working pressure of a transmission accumulator in response to a start of said deceleration fuel cutoff period.
A method for controlling a transmission of a vehicle including an engine, comprising:
- initiating a deceleration fuel cutoff period of engine operation;
- increasing a working pressure of a transmission accumulator in response to a start of said deceleration fuel cutoff period;
- and
- operating a pump used to charge said transmission accumulator in response to said start of said deceleration fuel cutoff period.
Dependencies are inferred from the claim text.