METHOD AND APPARATUS FOR CONTROLLING VEHICLE DOWNFORCE
First Claim
1. A method for controlling an active aerodynamic control system disposed on a vehicle, comprising:
- determining a target acceleration downforce associated with an acceleration request and a vehicle speed;
determining a target braking downforce associated with a braking request and the vehicle speed;
determining a target cornering downforce associated with a cornering request and the vehicle speed;
determining a maximum downforce request based upon the target acceleration downforce, the target braking downforce, and the target cornering downforce;
determining a second greatest downforce request based upon the target acceleration downforce, the target braking downforce, and the target cornering downforce;
determining a preferred front/rear distribution of downforce based upon the maximum downforce request and the second greatest downforce request; and
controlling the active aerodynamic control system based upon the preferred front/rear distribution of downforce and the maximum downforce request.
1 Assignment
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Accused Products
Abstract
A vehicle employing an active aerodynamic control system is described. A method for controlling the active aerodynamic control system includes determining a target acceleration downforce associated with an acceleration request and vehicle speed, determining a target braking downforce associated with a braking request and vehicle speed, and determining a target cornering downforce associated with a cornering request and vehicle speed. A maximum downforce request and a second greatest downforce request of the target acceleration downforce, the target braking downforce, and the target cornering downforce are determined. A preferred front/rear distribution of downforce is determined based upon the maximum downforce request and the second greatest downforce request. The active aerodynamic control system is controlled based upon the preferred front/rear distribution of downforce and the maximum downforce request.
17 Citations
19 Claims
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1. A method for controlling an active aerodynamic control system disposed on a vehicle, comprising:
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determining a target acceleration downforce associated with an acceleration request and a vehicle speed; determining a target braking downforce associated with a braking request and the vehicle speed; determining a target cornering downforce associated with a cornering request and the vehicle speed; determining a maximum downforce request based upon the target acceleration downforce, the target braking downforce, and the target cornering downforce; determining a second greatest downforce request based upon the target acceleration downforce, the target braking downforce, and the target cornering downforce; determining a preferred front/rear distribution of downforce based upon the maximum downforce request and the second greatest downforce request; and controlling the active aerodynamic control system based upon the preferred front/rear distribution of downforce and the maximum downforce request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A motor vehicle, comprising:
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a plurality of road wheels; a drivetrain including a power plant mechanically coupled via a geartrain to one of the road wheels; an active aerodynamic control system including a controllable front spoiler assembly and a controllable rear spoiler assembly; a plurality of sensors for monitoring vehicle operation related to vehicle ride and handling; and an electronic controller in communication with the plurality of sensors and operatively connected to the active aerodynamic control system, the controller including an instruction set, the instruction set executable to; determine a target acceleration downforce associated with an acceleration request and a vehicle speed, determine a target braking downforce associated with a braking request and the vehicle speed, determine a target cornering downforce associated with a cornering request and the vehicle speed, determine a maximum downforce request based upon the target acceleration downforce, the target braking downforce, and the target cornering downforce, determine a second greatest downforce request based upon the target acceleration downforce, the target braking downforce, and the target cornering downforce, determine a preferred front/rear distribution of downforce based upon the maximum downforce request and the second greatest downforce request, and control the active aerodynamic control system based upon the preferred front/rear distribution of downforce and the maximum downforce request. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification