METHODS AND SYSTEMS FOR ADJUSTING VEHICLE NOISE FOR HUMAN-IN-THE-LOOP CRUISE CONTROL
First Claim
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1. A method for a drive unit of a vehicle, comprising:
- responsive to a vehicle speed meeting a predefined condition relative to a threshold vehicle speed, adjusting one or more drive unit actuators to modulate noise while maintaining desired wheel torque within a threshold.
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Abstract
Methods and systems are provided for adjusting vehicle noises to notify the vehicle operator of speed changes in human-in-the-loop cruise control and semi-autonomous vehicle operation. In one example, a method for drive unit of a vehicle may include responsive to a vehicle speed meeting a predefined condition relative to a threshold vehicle speed, adjusting one or more drive unit actuators to modulate engine noise while maintaining desired wheel torque within a threshold.
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Citations
20 Claims
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1. A method for a drive unit of a vehicle, comprising:
responsive to a vehicle speed meeting a predefined condition relative to a threshold vehicle speed, adjusting one or more drive unit actuators to modulate noise while maintaining desired wheel torque within a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hybrid vehicle system, comprising:
a controller storing instructions in non-transitory memory executable to; responsive to a speed of a vehicle of the hybrid vehicle system meeting a predefined condition relative to a threshold vehicle speed, adjust one or more actuators to modulate vehicle noise while maintaining desired wheel torque within a threshold, including; during an electric mode where the vehicle is propelled by an electric machine, adjust an amount of noise output from the electric machine to increase vehicle noise; and during an engine mode where the vehicle is propelled by an engine, adjust a position of an intake throttle coupled upstream of the engine to increase vehicle noise. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for an engine of a vehicle, comprising:
while operating in a human-in-the-loop mode and responsive to a speed of the vehicle exceeding a threshold speed, opening a throttle valve positioned in an intake of the engine to increase engine noise while also retarding intake valve timing to maintain operator desired torque within a threshold. - View Dependent Claims (17, 18, 19, 20)
Specification