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Front-End Collision Avoidance through Automatic Transmission Shift Scheduling Disclosure Number: IPCOM000239148D
Publication Date: 2014-Oct-16
Document File: 1 page(s) / 67K

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The Prior Art Database

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Front-End Collision Avoidance through Automatic Transmission Shift Scheduling

    Increased use of proximity sensors on the front of automobiles presents an opportunity to introduce a system to avoid automotive collisions. Typically, these sensors are linked to one of two systems. The first triggers an alarm within the cabin, alerting the driver to the possibility of a possible collision. The second type applies braking action before the driver can react, slowing the vehicle. Though this second option can cause problems, such as opening the driver up to a collision from another direction or causing the tires to skid, it is generally the safer method when operating correctly.

    A method is proposed to further offer emergency front-end collision avoidance through powertrain modulation. The system would command shifts to reduce engine torque and induce engine braking depending on the throttle position of the vehicle.


    A control system is implemented to control the shift patterns of an automatic transmission. This system uses a proximity sensor to detect a potential front-end or front-side collision. When it is triggered, the system checks to see if the driver is applying force to the accelerator pedal. While the accelerator is depressed, the system schedules upshifts to reduce engine torque, limiting the driver's ability to accelerate. When the driver removes their foot from the accelerator pedal, or engages the brakes, the system then commands rapid downshifts to...