JPS63182278U

JPS63182278U -

Info

Publication number: JPS63182278U
Application number: JP7271987U
Authority: JP
Priority date: 1987-05-15
Filing date: 1987-05-15
Publication date: 1988-11-24

Description

[Brief explanation of the drawing]

第１図は本考案の概念構成図、第２図は本考案
の一実施例の制御系のブロツク図、第３図と第４
図はこの実施例のＣＰＵ内で実行される演算内容
を示す流れ図、第５図はこの実施例の学習領域を
示す特性線図である。第６図は従来例の学習領域
を示す特性線図である。１……基本点火時期設定手段、２……フイード
バツク要因検出手段、３……フイードバツク量演
算手段、５……学習値記憶手段、６……学習値読
み出し手段、７……出力点火時期演算手段、９…
…エリア判別手段、１０……学習条件判別手段、
１１……学習値更新手段、１２……特定エリア設
定手段、１３……オクタン価判別手段、１４……
一斉更新手段、２１……クランク角センサ、２２
……空気流量センサ、２３……水温センサ、２４
……アイドルスイツチ、２５……圧力センサ、３
０……コントロールユニツト、３１……点火装置
。 Figure 1 is a conceptual block diagram of the present invention, Figure 2 is a block diagram of a control system of an embodiment of the present invention, and Figures 3 and 4 are
The figure is a flowchart showing the contents of calculations executed within the CPU of this embodiment, and FIG. 5 is a characteristic diagram showing the learning area of this embodiment. FIG. 6 is a characteristic diagram showing the learning area of the conventional example. 1...Basic ignition timing setting means, 2...Feedback factor detection means, 3...Feedback amount calculation means, 5...Learned value storage means, 6...Learned value reading means, 7...Output ignition timing calculation means, 9...
...Area determination means, 10...Learning condition determination means,
11... Learning value updating means, 12... Specific area setting means, 13... Octane number determining means, 14...
Simultaneous update means, 21...Crank angle sensor, 22
...Air flow rate sensor, 23...Water temperature sensor, 24
...Idle switch, 25 ...Pressure sensor, 3
0...Control unit, 31...Ignition device.

Claims

[Scope of utility model registration request]

Means for setting basic ignition timing according to an engine operating condition signal, means for detecting a feedback factor related to engine ignition timing, and calculating a feedback amount for advancing or retarding the ignition timing in accordance with the detected value. means for dividing a learning region into a plurality of areas using operating conditions as parameters and storing learning values for each area; means for reading out the stored learning values; means for calculating the output ignition timing by correcting the ignition timing based on the ignition timing; and means for determining which area the vehicle is in based on the operating condition signal;
An ignition timing control device for an internal combustion engine, comprising means for determining whether a learning condition is met, and means for updating the feedback amount as a new learned value for each determined area when the learning condition is satisfied, Means for setting an area with high learning frequency as a specific area from among the plurality of areas, and determining which octane number of the supplied fuel is from the feedback amount calculated in the area when the learning condition of the specific area is satisfied. An ignition method for an internal combustion engine, characterized in that it is provided with means for determining, and means for determining a learned value according to the determined octane number and updating the learned values of all areas at once with the determined learned value. Timing control device.