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US 10,704,615 B2Granted
Vehicle and system for controlling a vehicle transmission
AssigneeFord Global Technologies, LLC
InventorsScott Joseph Gittins, Timothy Fedullo, Samuel Melville Glauber, Andrew James Myrna, Benjamin Rupley, Ryan Eggebrecht
Life of this patent
Estimating the term…
Abstract
A vehicle includes an engine, a transmission, and a controller. The transmission has clutches, a circuit configured to transport fluid to the clutches, a pump configured to circulate the fluid through the circuit, and an accumulator disposed along the circuit. The controller is programmed to, responsive to an engine start and a fluid temperature being less than a temperature threshold, discharge the accumulator to prime the pump.
Claims18
A vehicle comprising:
- an engine;
- a transmission having clutches, a circuit configured to transport fluid to the clutches, a pump configured to circulate the fluid through the circuit, and an accumulator disposed along the circuit;
- and
- a controller programmed to,
- responsive to starting the engine, a fluid temperature being less than a temperature threshold, and a fluid pressure being less than a pressure threshold, discharge the accumulator to prime the pump, and
- responsive to, a request to discharge the accumulator and a fluid volume within the accumulator being less than a volume threshold, increase an engine speed.
3 more elements
A vehicle comprising:
- an engine;
- a transmission having clutches, a circuit configured to transport fluid to the clutches, a pump configured to circulate the fluid through the circuit, and an accumulator disposed along the circuit;
- and
- a controller programmed to,
- responsive to an engine start and a fluid temperature being less than a temperature threshold, discharge the accumulator to prime the pump, and
- responsive to, a request to discharge the accumulator and an inoperable condition of the accumulator, increase an engine speed from an idle speed.
3 more elements
A vehicle comprising:
- an engine;
- a transmission having a circuit, a pump configured to circulate fluid through the circuit, and an accumulator disposed along the circuit;
- and
- a controller programmed to, responsive to a current engine start, a time period between the current engine start and a prior engine start being greater than a time threshold, and a fluid temperature being less than a temperature threshold, discharge the accumulator to prime the pump.
1 more element
Dependencies are inferred from the claim text.