Control system and method for a power delivery system having a continuously variable ratio transmission

Patent · 31 December 1983

OSTI ID:865076

Frank, Andrew A ^[1]

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1. 1034 Hillside Ave., Madison, WI 53705

A control system and method for a power delivery system, such as in an automotive vehicle, having an engine coupled to a continuously variable ratio transmission (CVT). Totally independent control of engine and transmission enable the engine to precisely follow a desired operating characteristic, such as the ideal operating line for minimum fuel consumption. CVT ratio is controlled as a function of commanded power or torque and measured load, while engine fuel requirements (e.g., throttle position) are strictly a function of measured engine speed. Fuel requirements are therefore precisely adjusted in accordance with the ideal characteristic for any load placed on the engine.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Frank, Andrew A. (1034 Hillside Ave., Madison, WI 53705)
• Patent Number(s): US 4458561
• OSTI ID: 865076
• Country of Publication: United States
• Language: English

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