Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indication of fuel consumption rate or economy of usage
Reexamination Certificate
2007-04-18
2011-11-01
Keith, Jack (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indication of fuel consumption rate or economy of usage
C701S065000, C701S099000, C477S043000, C180S338000
Reexamination Certificate
active
08050856
ABSTRACT:
The technology described herein provides methods and systems for powertrain optimization and improved fuel economy including multiple displacement engine modeling and control optimization, automotive powertrain matching for fuel economy, cycle-based automotive shift and lock-up scheduling for fuel economy, and engine performance requirements based on vehicle attributes and drive cycle characteristics. Also provided is a reverse tractive road load demand simulation algorithm used to propagate a reverse tractive road load demand and a corresponding component torque and speed, derived from a vehicle speed trace, in a reverse direction through a powertrain system. Also provided is a dynamic optimization algorithm. The dynamic programming algorithm is applied to a matrix of fuel flow rates to find the optimal control path that maximizes the powertrain efficiency over a cycle.
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Duty Mark J.
Papke Melody
Chrysler Group LLC
Keith Jack
Khatib Rami
Smith Ralph E.
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