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Title: Control apparatus of an intake air amount in an internal combustion engine

Abstract

A control apparatus is described of an intake air amount in an internal combustion engine comprising: a bypass air passageway which is arranged in parallel to an intake pipe to lead the intake air into the internal combustion engine, the bypass air passageway being formed to bypass a throttle valve portion of the intake pipe; an air control valve having an actuator to control the amount of air flowing through the air passageway and an exciting coil to drive and control the actuator in accordance with an amount of an exciting current; drive means for generating a pulse-like drive current which is controlled due to its duty ratio and supplying the drive current to the exciting coil of the air control valve; temperature detecting means for detecting temperature information corresponding to a temperature of the exciting coil of the air control valve; calculation storage means for calculating and storing a correction value of an amount of feedback control to allow the present rotating speed of the internal combustion engine in its idle state to approach an idle objective rotating speed in the states whereby a feedback control condition was set and whereby a value of the temperature information detected bymore » the temperature detecting means lies within a specified temperature range, the stored correction value being used for calculation of a control amount upon open loop control; and control means for setting the duty ratio of the pulse-like drive current which is generated by the drive means in accordance with the control amount for the feedback control and open loop control, thereby controlling the amount of the air which flows through the bypass air passageway.« less

Inventors:
;
Publication Date:
OSTI Identifier:
5856753
Patent Number(s):
US 4580536
Assignee:
Nippondenso Co., Ltd., Kariya
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 4 Apr 1985
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; INTERNAL COMBUSTION ENGINES; AIR FLOW; COMPUTERIZED CONTROL SYSTEMS; VALVES; ACTUATORS; ELECTRIC CURRENTS; FEEDBACK; INTAKE STRUCTURES; MEMORY DEVICES; PULSES; ROTATION; TEMPERATURE MEASUREMENT; VELOCITY; CONTROL EQUIPMENT; CONTROL SYSTEMS; CURRENTS; ENGINES; EQUIPMENT; FLOW REGULATORS; FLUID FLOW; GAS FLOW; HEAT ENGINES; MECHANICAL STRUCTURES; MOTION; 330100* - Internal Combustion Engines

Citation Formats

Takao, M, and Kimura, T. Control apparatus of an intake air amount in an internal combustion engine. United States: N. p., 1986. Web.
Takao, M, & Kimura, T. Control apparatus of an intake air amount in an internal combustion engine. United States.
Takao, M, and Kimura, T. 1986. "Control apparatus of an intake air amount in an internal combustion engine". United States.
@article{osti_5856753,
title = {Control apparatus of an intake air amount in an internal combustion engine},
author = {Takao, M and Kimura, T},
abstractNote = {A control apparatus is described of an intake air amount in an internal combustion engine comprising: a bypass air passageway which is arranged in parallel to an intake pipe to lead the intake air into the internal combustion engine, the bypass air passageway being formed to bypass a throttle valve portion of the intake pipe; an air control valve having an actuator to control the amount of air flowing through the air passageway and an exciting coil to drive and control the actuator in accordance with an amount of an exciting current; drive means for generating a pulse-like drive current which is controlled due to its duty ratio and supplying the drive current to the exciting coil of the air control valve; temperature detecting means for detecting temperature information corresponding to a temperature of the exciting coil of the air control valve; calculation storage means for calculating and storing a correction value of an amount of feedback control to allow the present rotating speed of the internal combustion engine in its idle state to approach an idle objective rotating speed in the states whereby a feedback control condition was set and whereby a value of the temperature information detected by the temperature detecting means lies within a specified temperature range, the stored correction value being used for calculation of a control amount upon open loop control; and control means for setting the duty ratio of the pulse-like drive current which is generated by the drive means in accordance with the control amount for the feedback control and open loop control, thereby controlling the amount of the air which flows through the bypass air passageway.},
doi = {},
url = {https://www.osti.gov/biblio/5856753}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {4}
}