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Title: Microprocessor controlled system and method for reducing the fuel flow to the prime mover of a power delivery system having a continuously variable ratio transmission upon a commanded decrease in power delivery

Abstract

This patent describes a system for controlling the operation of a power delivery system including an engine of an engine-driven vehicle and a continuously variable ratio transmission coupled to the engine for delivering power from the engine to an output shaft. The engine has fuel delivery means for delivering a variable quantity of fuel thereto. The power delivery system is controlled by command means for commanding a desired power delivery system performance. The system which consists of: actual system performance measuring means for measuring the actual performance of the power delivery system; ratio control means operatively coupled to the command means and the actual system performance measuring means for controlling the ratio of the transmission as a function of the desired system performance commanded and the measured actual system performance, the speed of the engine varying as a function of transmission ratio; fuel function means defining a desired fuel requirement for the engine in relation to engine operating speed; speed measuring means for measuring the speed of the engine; fuel control means operatively coupled to the fuel function means, so that the fuel delivered to the engine is determined only by the speed thereof; and microprocessor controlled fuel cutting means,more » separate from the fuel control means. The fuel cutting means consists of: input means for inputting to the microprocessor first and second system performance commands, the microprocessor processing the first and second system performance commands to arrive at a change in commanded system performance; and fuel flow means for controlling the fuel flow to the fuel delivery means at a duty cycle which is inversely proportional to the change in commanded system performance.« less

Inventors:
Publication Date:
OSTI Identifier:
5702192
Patent Number(s):
US 4580465
Assignee:
Aisin Seiki Kabushiki Kaisha
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 24 Feb 1984
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; ENGINES; COMPUTERIZED CONTROL SYSTEMS; FUEL INJECTION SYSTEMS; MECHANICAL TRANSMISSIONS; VEHICLES; MICROPROCESSORS; PERFORMANCE; SHAFTS; SPEED REGULATORS; VELOCITY; COMPUTERS; CONTROL EQUIPMENT; CONTROL SYSTEMS; ELECTRONIC CIRCUITS; EQUIPMENT; FUEL SYSTEMS; MACHINE PARTS; MICROELECTRONIC CIRCUITS; 330602* - Vehicle Design Factors- Engine-Transmission Matching

Citation Formats

Omitsu, T. Microprocessor controlled system and method for reducing the fuel flow to the prime mover of a power delivery system having a continuously variable ratio transmission upon a commanded decrease in power delivery. United States: N. p., 1986. Web.
Omitsu, T. Microprocessor controlled system and method for reducing the fuel flow to the prime mover of a power delivery system having a continuously variable ratio transmission upon a commanded decrease in power delivery. United States.
Omitsu, T. 1986. "Microprocessor controlled system and method for reducing the fuel flow to the prime mover of a power delivery system having a continuously variable ratio transmission upon a commanded decrease in power delivery". United States.
@article{osti_5702192,
title = {Microprocessor controlled system and method for reducing the fuel flow to the prime mover of a power delivery system having a continuously variable ratio transmission upon a commanded decrease in power delivery},
author = {Omitsu, T},
abstractNote = {This patent describes a system for controlling the operation of a power delivery system including an engine of an engine-driven vehicle and a continuously variable ratio transmission coupled to the engine for delivering power from the engine to an output shaft. The engine has fuel delivery means for delivering a variable quantity of fuel thereto. The power delivery system is controlled by command means for commanding a desired power delivery system performance. The system which consists of: actual system performance measuring means for measuring the actual performance of the power delivery system; ratio control means operatively coupled to the command means and the actual system performance measuring means for controlling the ratio of the transmission as a function of the desired system performance commanded and the measured actual system performance, the speed of the engine varying as a function of transmission ratio; fuel function means defining a desired fuel requirement for the engine in relation to engine operating speed; speed measuring means for measuring the speed of the engine; fuel control means operatively coupled to the fuel function means, so that the fuel delivered to the engine is determined only by the speed thereof; and microprocessor controlled fuel cutting means, separate from the fuel control means. The fuel cutting means consists of: input means for inputting to the microprocessor first and second system performance commands, the microprocessor processing the first and second system performance commands to arrive at a change in commanded system performance; and fuel flow means for controlling the fuel flow to the fuel delivery means at a duty cycle which is inversely proportional to the change in commanded system performance.},
doi = {},
url = {https://www.osti.gov/biblio/5702192}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 08 00:00:00 EST 1986},
month = {Tue Apr 08 00:00:00 EST 1986}
}