System and method for calibrating a transmission
AssigneeBaumann Electronic Controls, LLC
InventorKarl William Baumann
Life of this patent
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Abstract
A method of adjusting and using operating parameters of a transmission of a vehicle may include accessing a stored list of clutch parameters, performing a dynamic condition procedure while the vehicle is driven to revise minimum on-coming apply pressure for each friction element based on a sensed performance of an element within the vehicle powertrain, storing the modified minimum on-coming apply pressures, and operating the vehicle. A related transmission control device operates a transmission using parameters obtained during a dynamic condition procedure.
Claims29
A transmission control device for a vehicle having a powertrain including an engine, a transmission with a plurality of solenoid actuated friction elements, and sensors, the device comprising:
- at least one connection for transmitting signals to and from the engine, the transmission, and the sensors within the vehicle;
- and
- a memory for storing a program for adjusting and controlling the transmission and data including friction element apply pressure data, the program storing a minimum on-coming apply pressure for each of the friction elements in the memory as initial optimized values, the program directing the powertrain to perform a dynamic condition procedure while the vehicle is being driven to determine a modified minimum on-coming apply pressure for each of the friction elements based on a sensed performance of an element within the powertrain, the program storing the modified minimum on-coming apply pressures in the memory as further optimized values, after completion of the dynamic condition procedure, the program controlling the transmission during operation of the vehicle using the further optimized values.
A method of adjusting and using operating parameters of a transmission of a vehicle, the transmission having a plurality of friction elements, the method comprising:
- accessing a stored list of clutch parameters including;
- a minimum on-coming apply pressure for each of the friction elements as initial optimized values in a list of clutch parameters;
- performing a dynamic condition procedure while the vehicle is driven to revise the clutch parameters, the dynamic condition procedure including determining a modified minimum on-coming apply pressure for each of the friction elements based on a sensed performance of an element within the powertrain;
- storing the modified minimum on-coming apply pressure as further optimized values in a revised list of clutch parameters;
- and
- operating the vehicle using the revised list of clutch parameters.
Dependencies are inferred from the claim text.