JPH0452564U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an ignition timing control device for an internal combustion engine according to the present invention, FIG. 2 is a block diagram showing details of the control unit, FIG. 3 is a flow chart showing the operation of the control device, and FIG. The figure is an explanatory diagram showing the ignition timing control zone used therein, Fig. 5 is a timing chart explaining the operation of the flow chart in Fig. 3, and Fig. 6 is a flow chart showing the second embodiment of the present invention.・It is a chat. 10... Internal combustion engine, 12... Intake air path, 14
...Air cleaner, 16...Throttle valve, 18
...Intake manifold, 20...Combustion chamber, 2
4...Pipe, 26...Intake pressure sensor, 28...
... Cooling water passage, 30 ... Water temperature sensor, 32 ... Throttle position sensor, 34 ... Atmospheric pressure sensor, 3
6...distributor, 38...piston,
40... Crank angle sensor, 41... Driving wheel speed sensor, 42... Cylinder block, 43... Idle wheel speed sensor, 44... Knock sensor, 50...
...Control unit, 52...Level conversion circuit, 54
... Microcomputer, 60 ... Knock detection circuit, 68, 74, 78 ... Output circuit, 70 ...
...Ignition device, 72...Spark plug, 76...Throttle valve actuator, 80...Fuel injection device, 82...Injection valve.

Claims (1)

[Scope of Claim for Utility Model Registration] (1)a Engine operating state detection means for detecting the operating state of the engine; b Ignition timing control range setting means for setting multiple types of ignition timing control ranges according to the octane number of the fuel used; c. Knock detection means for detecting knocks occurring in the engine; d. Based on the output of the knock detection means, one of the plurality of ignition timing control ranges corresponding to the octane number of the fuel used is selected, and detection is performed based on the selected one of the plurality of ignition timing control ranges corresponding to the octane number of the fuel used. an ignition timing determining means that determines the ignition timing from the engine operating state and the knock occurrence state; and e. an ignition means that ignites the air-fuel mixture in the engine combustion chamber based on the ignition timing determined by the ignition timing determining means. An ignition timing control device for an engine, comprising: f. a traction control device for suppressing slip of a drive wheel of a vehicle in which the engine is mounted; and g. a detection means for detecting an operating state of the traction control device; An ignition timing control device for an internal combustion engine, characterized in that the means is configured to stop selection of the ignition timing control range when a traction control state is detected. (2) The ignition timing determining means, when the traction control state is detected, determines the ignition timing based on the ignition timing control range that was selected immediately before the traction control state was detected. The ignition timing control device for an internal combustion engine according to item 1. (3) a. Engine operating state detection means for detecting the operating state of the engine, including at least engine speed and engine load; b. Knock detection means for detecting knocks occurring in the engine; c. d. ignition timing determining means for determining the basic ignition timing of the engine and retarding the basic ignition timing by a first predetermined amount when a knock is detected; and d. An ignition timing control device for an internal combustion engine, comprising: ignition means for igniting a mixture in a combustion chamber; e. detecting a slip in a drive wheel of a vehicle in which the engine is mounted; traction retard correction means for correcting the angle, and the ignition timing determining means is configured to correct the basic ignition timing with the larger of the first and second predetermined amounts. An ignition timing control device for an internal combustion engine, characterized in that: