Automatic transmission calibration method
First Claim
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1. A method of calibrating an automatic transmission for a vehicle design comprising:
- acquiring laboratory-generated vehicle engine and transmission data;
acquiring user-generated drivability data;
determining upshift throttle levels from acquired laboratory-generated data and from drivability data;
determining target engine speeds before upshift throttle levels from the laboratory-generated data and the drivability data; and
generating upshift scheduling curves in a throttle level/transmission output speed plane based upon determined target engine speeds.
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Abstract
Automated calibration of an automatic transmission design generates upshift scheduling curves in a throttle level/transmission output speed plane based upon laboratory-generated data and user generated drivability data. Downshift scheduling curves and torque converter lock-up and unlock curves are then generated as offsets from breakpoints on corresponding upshift curves, the offsets determined principally from the drivability data.
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Citations
10 Claims
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1. A method of calibrating an automatic transmission for a vehicle design comprising:
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acquiring laboratory-generated vehicle engine and transmission data; acquiring user-generated drivability data; determining upshift throttle levels from acquired laboratory-generated data and from drivability data; determining target engine speeds before upshift throttle levels from the laboratory-generated data and the drivability data; and generating upshift scheduling curves in a throttle level/transmission output speed plane based upon determined target engine speeds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification