エンジンの回転数制御装置

Revolution speed control device for engine

Abstract

(57)【要約】 【目的】補機負荷による回転変動に対する補正を過度に 行う事無く、エンジンの振動やハンチング等を防止しつ つ、負荷変動によるエンジンの回転変動に対する補正を 遅れる事なく、且つ、適量かける事が可能となり、負荷 変動による回転変動を抑制する。 【構成】吸入空気量を補正制御する事により、アイドル 状態でのエンジン回転数の所定の方法で求めた目標回転 数からの偏差や、回転変動を防止するエンジン制御装置 において、補機負荷空気量制御弁の空気流量を推定した 結果をもちいてISCでの負荷補正を行う。また、補機 負荷空気量制御弁の推定空気流量結果をISC制御のフ ィードバック制御条件とする。
PURPOSE: To suppress a rotation fluctuation due to a load fluctuation by estimating an amount of air passing through an auxiliary machine load air amount control valve when a deviation from the target number of revolutions in an idling state and a rotation fluctuation are prevented from occurring through correction and control of an intake air amount. CONSTITUTION: An engine revolution speed control device comprises an IC valve 54 to effect control so that the number of idle revolutions of an engine 162 is adjusted to a value approximately similar to a target value; an auxiliary machine load air amount control valve 13 arranged in such a manner to bypass a throttle body 159 so that the load of a power steering pump 165 by which a load fluctuation is caused is corrected. From the measuring result of an air flow meter 1 and a sum of an amount of air passing a throttle valve in a throttle body 159 and a leak air amount of a throttle valve, an estimation feed air amount is determined. A difference between the measuring result of the air flow meter 1 and an estimated feed air amount is determined to estimate an amount of air passing an auxiliary machine load air amount control valve 13, and an ISC valve 54 is driven and controlled according to a change amount per unit time of the passage air amount. COPYRIGHT: (C)1996,JPO

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Cited By (3)

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    CN-104421024-AMarch 18, 2015马自达汽车株式会社多汽缸发动机的控制装置及控制方法
    DE-102014011842-A1February 26, 2015Mazda Motor CorporationMehrzylindermotor, Regel- bzw. Steuervorrichtung hierfür, entsprechendes Verfahren und Computerprogrammprodukt
    US-9624843-B2April 18, 2017Mazda Motor CorporationControl device of multi-cylinder engine