JPH0219873U

JPH0219873U -

Info

Publication number: JPH0219873U
Application number: JP9662788U
Authority: JP
Priority date: 1988-07-21
Filing date: 1988-07-21
Publication date: 1990-02-09
Anticipated expiration: 2003-07-21
Also published as: JPH0736129Y2

Description

[Brief explanation of drawings]

第１図は本考案の実用新案登録請求の範囲に対
応するブロツク図、第２図は従来のＭＡＳＫ信号
とノツキング判定区間との関係等を示す線図、第
３図は機関回転速度の変化によるノツキング判定
区間の設定可能領域の変化を示す線図、第４図は
本考案が適用可能な内燃機関を示す概略図、第５
図は第４図の制御回路の詳細を示すブロツク図、
第６図はＭＡＳＫ信号出力ルーチンを示す流れ図
、第７図は遅角量のテーブルを示す線図、第８図
は本考案によるノツキング判定区間と従来例によ
るノツキング判定区間とを比較して示す線図であ
る。１２……ノツキングセンサ、１６……気筒判別
センサ、１８……クランク角センサ、４０……ノ
ツキング判定回路。 Fig. 1 is a block diagram corresponding to the claims of the utility model registration of the present invention, Fig. 2 is a diagram showing the relationship between the conventional MASK signal and the knocking judgment section, etc., and Fig. 3 is a diagram showing the relationship between the conventional MASK signal and the knocking judgment section. FIG. 4 is a diagram showing changes in the settable range of the knocking determination section; FIG. 4 is a schematic diagram showing an internal combustion engine to which the present invention is applicable; FIG.
The figure is a block diagram showing details of the control circuit in Figure 4.
FIG. 6 is a flowchart showing the MASK signal output routine, FIG. 7 is a diagram showing a table of retardation amounts, and FIG. 8 is a diagram showing a comparison between the knocking judgment section according to the present invention and the knocking judgment section according to the conventional example. It is a diagram. 12...Knocking sensor, 16...Cylinder discrimination sensor, 18...Crank angle sensor, 40...Knocking determination circuit.

Claims

[Scope of Claim for Utility Model Registration] A knotting sensor for detecting engine vibration due to knotting, and a preprocessing process before knocking strength determination from the time when a reference signal is generated, and a knocking sensor that detects the knotting within a predetermined knocking determination interval. a knocking determination means that sequentially executes a knocking intensity determination process that determines the strength of knocking based on the knocking sensor output, and post-processing after the knocking strength determination process; a crank angle sensor that generates a signal at every predetermined crank angle; time setting means for setting a time for generating the reference signal based on the signal output from the crank angle sensor so that the maximum level part of the crank angle sensor output is processed in the center of the knocking determination section; A knocking control device for an internal combustion engine, comprising: a reference signal generating means for generating the reference signal at a time set in the time setting means;