JPS63119848U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案のブロツク構成図、第２図は本
考案の第１実施例を示す機械的構成図、第３図は
この実施例の演算内容を示す流れ図、第４図〜第
７図はこの演算に用いる各テーブル内容を表す特
性線図である。第８図は先願の作用を説明する波
形図、第９図Ａ、第９図Ｂはそれぞれ先願と前記
実施例の作用を説明する波形図、第１０図はこの
考案の第２実施例のブロツク構成図である。 １……絞り弁開度検出手段、２……機関回転速
度検出手段、３……流路面積演算手段、４……除
算手段、５……リニヤライズ流量演算手段、６…
…遅れ係数演算手段、７……シリンダ空気量演算
手段、８……加算量演算手段、９……補正率演算
手段、１０……噴射弁部空気量演算手段、１５…
…絞り弁、１７……燃料噴射弁、１９……絞り弁
開度センサ、２０……クランク角センサ、２３…
…コントロールユニツト、５１……定常流量修正
手段、５２……シリンダ流量演算手段、５３……
加算手段。 Figure 1 is a block configuration diagram of the present invention, Figure 2 is a mechanical configuration diagram showing the first embodiment of the invention, Figure 3 is a flowchart showing the calculation contents of this embodiment, and Figures 4 to 7. is a characteristic diagram showing the contents of each table used in this calculation. FIG. 8 is a waveform diagram explaining the operation of the earlier application, FIGS. 9A and 9B are waveform diagrams explaining the operation of the earlier application and the above embodiment, respectively, and FIG. 10 is a second embodiment of this invention. FIG. DESCRIPTION OF SYMBOLS 1... Throttle valve opening detection means, 2... Engine rotational speed detection means, 3... Channel area calculation means, 4... Division means, 5... Linearization flow rate calculation means, 6...
...Delay coefficient calculating means, 7... Cylinder air amount calculating means, 8... Addition amount calculating means, 9... Correction factor calculating means, 10... Injection valve air amount calculating means, 15...
... Throttle valve, 17... Fuel injection valve, 19... Throttle valve opening sensor, 20... Crank angle sensor, 23...
...Control unit, 51... Steady flow rate correction means, 52... Cylinder flow rate calculation means, 53...
means of addition.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 絞り弁開度を検出する手段と、この絞り弁開度
から絞り弁部の流路面積を演算する手段と、機関
回転速度を検出する手段と、前記流路面積を回転
速度で除算する手段と、この除算値に基づいて絞
り弁部の単位吸気回数当たりの定常流量を求める
手段と、前記両検出値を用いて絞り弁部からシリ
ンダへの空気流れに関する遅れ係数を演算する手
段と、前記定常流量をこの遅れ係数にて遅延補正
することによりシリンダに流入する空気量を演算
する手段と、このシリンダ空気量の変化量から所
定の加算量を演算する手段と、前記除算値、定常
流量またはシリンダ空気量のいずれか一つの回転
速度を用いて補正率を演算する手段と、この補正
率、前記シリンダ空気量及び加算量を用いて、ま
たはこの補正率、前記定常流量及び加算量を用い
て噴射弁部の空気量を演算する手段とを備えたこ
とを特徴とする機関の空気量検出装置。 means for detecting a throttle valve opening; means for calculating a flow passage area of the throttle valve portion from the throttle valve opening; means for detecting an engine rotation speed; and means for dividing the flow passage area by the rotation speed. , means for determining a steady flow rate per unit number of intakes in the throttle valve section based on the divided value; means for calculating a delay coefficient regarding the air flow from the throttle valve section to the cylinder using both of the detected values; means for calculating the amount of air flowing into the cylinder by delay-correcting the flow rate using the delay coefficient; means for calculating a predetermined addition amount from the amount of change in the cylinder air amount; means for calculating a correction factor using the rotational speed of any one of the air amounts; and injection using the correction factor, the cylinder air amount and the addition amount, or using the correction factor, the steady flow rate and the addition amount. 1. An air amount detection device for an engine, comprising means for calculating an air amount in a valve portion.