JPS62195669U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a basic conceptual diagram of the present invention, Figs. 2 to 13 are diagrams showing one embodiment of the invention, Fig. 2 is its overall configuration diagram, Fig. 3 is a block diagram showing its configuration, and Fig. 3 is a diagram showing an embodiment of the invention. FIG. 4 is a flowchart showing the ignition timing control interrupt program, FIG. 5 is a flowchart showing the count reset interrupt program, FIG. 6 is a flowchart showing the A/D conversion interrupt program, and FIG. is a flowchart showing the peak hold end interrupt program, FIG. 8 is a flowchart showing the igniter control interrupt program, FIG. 9 is a flowchart showing the area determination subroutine program, and FIG. 10 is the retard control. Flowchart showing the quantity calculation subroutine program, FIG. 11a is a timing chart showing the relationship between the crank angle and counter value, FIG. 11b is a timing chart showing the timing of the knock gate, and FIG. 11c is the retard correction. Timing chart showing the calculation timing of quantities, No. 11
Figure d is a timing chart showing the calculation timing of the effective ignition timing, Figure 12 is a diagram for explaining its operating range, and Figures 13 a to c are timing charts for explaining its operation. DESCRIPTION OF SYMBOLS 1... Engine, 2... Knock sensor (knock detection means), 5... Spark plug, 6... Distributor, 7... Igniter, 8... Ignition means, 10, 11... Crank angle sensor (operating state 13... Air flow meter (operating state detection means), 14... Control circuit (area discrimination means,
condition determination means, correction amount calculation means, learning means, ignition timing setting means).

Claims (1)

[Claims for Utility Model Registration] (a) Operating state detection means for detecting the operating state of the engine using engine load and rotation speed as parameters; (b) Knock detection means for detecting knocking occurring in the engine; (c (d) operating range determining means for determining that the engine is in a predetermined operating range based on the output of the operating state detecting means; (e) correction amount calculation means for calculating a retard control amount for correcting the ignition timing so that the knock level becomes a predetermined value based on the output of the knock detection means; (f) the retard control amount; (g) learning means for correcting the control amount based on the engine load and storing the corrected value as a learned value for a predetermined operating region; (h) ignition timing setting means for reading the learned value of the corresponding operating region from the learning means and correcting the basic ignition timing based on the learned value; An ignition timing control device for an internal combustion engine, comprising: ignition means for igniting an air-fuel mixture.