SwRI Controls Development, Algorithm Design, and Calibration Services: Drivetrain Design and Development design capabilities and controls

Transmission controls services are offered by the Drivetrain Design and Development Section at Southwest Research Institute (SwRI) for:

  • Algorithm design and development

  • Production-ready calibration services

  • Drivability evaluation and analysis

  • Problem solving of production issues

Areas of support expertise include:

  • Shift schedule development

    • Normal, specialty, and climate-related schedules

    • Optimization for fuel economy vs. drivability

  • Shift/ratio control

    • Objective evaluation of shift deviations using computer analysis of in-vehicle accelerometers, on-board torque meters, and speed sensors

    • Subjective evaluation from OEM-experienced engineers

    • Pressure control strategy design

    • Shift-adaptive systems

    • Engine control integration

  • Line pressure control

    • Clutch capacity pressure limit development

    • Optimization for fuel economy and lubrication needs

  • Torque converter control

    • Apply pattern

    • Apply feel

    • Thermal management

    • Speed ratio, torque ratio, stall speed development

  • Hardware characterization

    • Cold compensation

    • Controller solenoid pressure/current mapping

    • Shift energy verification

    • Clutch circuit hydraulic delays

    • Part-to-part variation

  Image: SwRI engineers can support development of shift and torque converter patterns from 4-speed to 8-speed transmissions.   Image: SwRI engineers can help diagnose and correct shift feel-related issue through objective and subjective measurement.
 

SwRI engineers can support development of shift and torque converter patterns for 4-speed to 8-speed transmissions. CLICK IMAGE FOR LARGER VIEW.

  

SwRI engineers can help diagnose and correct shift feel-related issues through objective and subjective measurement. CLICK IMAGE FOR LARGER VIEW.

 

For more information about drivetrain engineering design capabilities at SwRI or how you can contract with SwRI, please contact Doug Fussner at dfussner@swri.org or (210) 522-3972.
 

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Southwest Research Institute® (SwRI®) is an independent, nonprofit, applied engineering and physical sciences research and development organization with 12 technical divisions using multidisciplinary approaches to problem solving. The Institute occupies more than 1,200 acres and provides nearly two million square feet of laboratories, test facilities, workshops, and offices for more than 3,300 employees who perform contract work for industry and government clients.