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US 9,517,770 B2Granted
Brake control for stop/start vehicle
AssigneeFord Global Technologies, LLC
InventorHai Yu
Life of this patent
Estimating the term…
Abstract
A vehicle is provided with an engine and a controller. The engine is adapted to shutdown and restart during a drive cycle and a controller. The controller is programmed to shutdown the engine in response to brake pressure exceeding a pressure threshold and to restart the engine in response to an accelerator pedal position exceeding a position threshold independent of brake pressure.
Claims16
A vehicle comprising:
- an engine adapted to shutdown and restart during a drive cycle;
- a first brake system adapted to generate a first brake torque;
- a second brake system adapted to generate a second brake torque;
- and
- a controller programmed to:
- shutdown the engine in response to brake pressure exceeding a pressure threshold;
- restart the engine in response to an accelerator pedal position exceeding a position threshold independent of brake pressure;
- decrease the first brake torque and decrease the second brake torque in response to an engine restart;
- and
- increase the first brake torque to a torque threshold in response to the brake pressure decreasing below the pressure threshold, wherein the torque threshold and the pressure threshold correspond to brake conditions at which the engine was shutdown.
7 more elements
A vehicle system comprising:
- a first brake system adapted to generate a first brake torque;
- a second brake system adapted to generate a second brake torque;
- and
- a controller programmed to:
- increase the first brake torque to a torque threshold in response to engine shutdown,
- decrease the first brake torque and increase the second brake torque in response to a battery voltage decreasing below a voltage threshold, and
- release the first and second brake systems responsive to an engine restart.
4 more elements
A method for controlling brake systems, comprising:
- shutting down an engine responsive to brake pressure exceeding a pressure threshold;
- controlling a first brake system to increase a first brake torque above a torque threshold in response to engine shutdown;
- and
- controlling the first brake system to decrease the first brake torque and controlling a second brake system to increase a second brake torque in response to a battery voltage decreasing below a voltage threshold.
1 more element
Dependencies are inferred from the claim text.