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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.

Inventors:
 [1]
  1. (1034 Hillside Ave., Madison, WI 53705)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865076
Patent Number(s):
4458561
Assignee:
Frank, Andrew A. (1034 Hillside Ave., Madison, WI 53705) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
control; method; power; delivery; continuously; variable; ratio; transmission; automotive; vehicle; engine; coupled; cvt; totally; independent; enable; precisely; follow; desired; operating; characteristic; ideal; line; minimum; fuel; consumption; controlled; function; commanded; torque; measured; load; requirements; throttle; position; strictly; speed; adjusted; accordance; placed; ratio transmission; automotive vehicle; variable ratio; continuously variable; commanded power; engine speed; fuel consumption; independent control; engine coupled; operating characteristic; power delivery; /477/

Citation Formats

Frank, Andrew A. Control system and method for a power delivery system having a continuously variable ratio transmission. United States: N. p., 1984. Web.
Frank, Andrew A. Control system and method for a power delivery system having a continuously variable ratio transmission. United States.
Frank, Andrew A. Sun . "Control system and method for a power delivery system having a continuously variable ratio transmission". United States. https://www.osti.gov/servlets/purl/865076.
@article{osti_865076,
title = {Control system and method for a power delivery system having a continuously variable ratio transmission},
author = {Frank, Andrew 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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