A computer system (e.g., an on-board vehicle computer system) creates or updates a mapping of transmission gears and respective driveline ratios during operation of the vehicle. The system obtains a current engine speed and vehicle speed and calculates a current driveline ratio for the vehicle based on the current engine speed and vehicle speed. If the driveline is engaged, the system updates the mapping based at least in part on the current driveline ratio. Performing the update may include adding a new transmission gear or updating an existing transmission gear in the mapping, or removing a duplicate transmission gear from the mapping. Applications include cruise control, predictive cruise control, predictive shifting, and selecting a gear for a specific purpose (e.g., for descending a hill).
Real-time tracking and filtering of estimated driveline ratios
2020-06-23
Patent
Elektronische Ressource
Englisch
REAL-TIME TRACKING AND FILTERING OF ESTIMATED DRIVELINE RATIOS FIELD
Europäisches Patentamt | 2019
|Crank velocity driveline filtering for consecutive misfire detection
Europäisches Patentamt | 2021
|CRANK VELOCITY DRIVELINE FILTERING FOR CONSECUTIVE MISFIRE DETECTION
Europäisches Patentamt | 2020
|Combining driveline and suspension models for real-time simulations
Kraftfahrwesen | 2000
|