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US 2006/0224291 A1Published application
Automatic transmission calibration method
AssigneeChrysler Corporation
InventorsBruce Geist, Pradeep Attibele, Javed Dada, John Rzepecki, Alexander Dolpp, David Parenti, William Resh
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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.
Claims10
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 upshifts 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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Dependencies are inferred from the claim text.