METHOF FOR PREVENTING ERROR OF CRANK SIGNAL

摘要

PURPOSE: A method for preventing the generation of errors in crank signals is provided to prevent the error occurrence of crank signals without equipping a separate sensor for sensing the error of the crank signals. CONSTITUTION: A method for preventing the error of crank signals comprises the following steps: controlling the injection and ignition of fuel on the basis of crank signals and cam signals which are supplied to an electric control device(100) from a crank sensor(300) and a cam sensor(500); setting the approach of crank signals to a crank signal range in which an error is possibly occurred if the pulse number of the crank signal is below a predetermined number; determining noise occurrence with respect to the crank signal pulse after the determination of crank signal long tooth and error occurrence with respect to the edge switching position of a cam(400) verified by the cam signal; and setting the synchronization with respect to engine stop and control by the determination. [Reference numerals] (100) Electronic control unit(ECU); (200) Target wheel; (400) Cam;