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

Abstract

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.

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

Citation Formats

Frank, A.A. Control system and method for a power delivery system having a continuously variable ratio transmission. United States: N. p., 1984. Web.
Frank, A.A. Control system and method for a power delivery system having a continuously variable ratio transmission. United States.
Frank, A.A. Tue . "Control system and method for a power delivery system having a continuously variable ratio transmission". United States.
@article{osti_7151779,
title = {Control system and method for a power delivery system having a continuously variable ratio transmission},
author = {Frank, A.A.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {7}
}