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

Patent · Tue Jul 10 00:00:00 EDT 1984

OSTI ID:7151779

Frank, A A

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. 4 figs.

• DOE Contract Number: W-7405-ENG-48
• Assignee: PTO; EDB-94-123819
• Patent Number(s): US 4458561; A
• Application Number: PPN: US 6-380921
• OSTI ID: 7151779
• Resource Relation: Patent File Date: 21 May 1982
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
AUTOMOBILES
MECHANICAL TRANSMISSIONS
AUGMENTATION
ENERGY DEMAND
FUEL CONSUMPTION
PERFORMANCE
DEMAND
ENERGY CONSUMPTION
MACHINE PARTS
VEHICLES
330602* - Vehicle Design Factors- Engine-Transmission Matching