Methods and systems for automated control of vehicle braking
First Claim
1. A method for automated braking of a vehicle, comprising:
- monitoring at least two of a road grade condition, a wet road condition or a road obstacle condition with sensors;
monitoring the rate of travel of an accelerator pedal in a deceleration direction;
determining if the rate of travel surpasses a threshold level;
if the threshold level is surpassed, determining if at least two vehicle conditions are present with the sensors, wherein the at least two vehicle conditions are at least two of a road grade condition, a wet road condition, a road obstacle condition or combinations thereof; and
if the threshold is surpassed and at least two vehicle conditions are present, braking the motor vehicle by controlling the negative torque on the drive wheels.
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Accused Products
Abstract
Method and systems for automated anticipatory braking of a vehicle are provided. In one embodiment, the system comprises a vehicle accelerator movable between a maximum speed position and a minimum speed position, and a sensor configured to determine the rate of travel of the accelerator toward the minimum speed position. The system further comprises a controller configured to utilize the rate of travel of the accelerator to determine if a rapid braking condition is desired, and to provide a control signal to apply increased negative torque to the drive wheels of the vehicle prior to the user applying the vehicle brake. In some embodiments, driver history and/or other vehicle conditions are taken into account. In some embodiments, negative torque is applied via varying of valve timing, control of combustion chamber intake, control of exhaust backpressure, control of motor energy, and/or shifting of a transmission to a numerically higher speed ratio.
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Citations
20 Claims
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1. A method for automated braking of a vehicle, comprising:
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monitoring at least two of a road grade condition, a wet road condition or a road obstacle condition with sensors; monitoring the rate of travel of an accelerator pedal in a deceleration direction; determining if the rate of travel surpasses a threshold level; if the threshold level is surpassed, determining if at least two vehicle conditions are present with the sensors, wherein the at least two vehicle conditions are at least two of a road grade condition, a wet road condition, a road obstacle condition or combinations thereof; and if the threshold is surpassed and at least two vehicle conditions are present, braking the motor vehicle by controlling the negative torque on the drive wheels. - View Dependent Claims (2, 3, 4, 5, 6, 10, 11, 12)
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7. A system for automated braking of a vehicle, comprising:
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an accelerator position sensor configured to determine the rate of movement of a driver accelerator; at least two sensors configured to determine if certain vehicle conditions are present, wherein the vehicle conditions are at least two of a road grade condition, a wet road condition, a road obstacle condition or combinations thereof; a controller in communication with the accelerator position sensor and the at least two sensors, wherein the controller is programmed to; determine if the vehicle conditions are present with the at least two sensors when the rate of movement of the driver accelerator surpasses a predetermined threshold in a decreased speed direction of the driver accelerator; and generate a control signal configured to apply negative torque to the drive wheels of the vehicle when the rate of movement of the driver accelerator surpasses a predetermined threshold in a decreased speed direction of the driver accelerator and at least two of the vehicle conditions are present. - View Dependent Claims (8, 9, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification