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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

	SwRI engineers can support development of shift and torque converter patterns for 4-speed to 8-speed transmissions. CLICK IMAGE FOR LARGER VIEW.		Engineers can help diagnose and correct shift feel-related issues through objective and subjective measurement. CLICK IMAGE FOR LARGER VIEW.

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

drivetrain.swri.org

| Design and Development | Engine, Emissions & Vehicle Research Division | SwRI Home |

Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

December 28, 2012