Procedure and devices for identifying the phase in an internal combustion engine

摘要

Method for identifying the piston in the compression stages of a combustion engine (1) quetiene one or more cylinders (2), one or more pistons (3), a control unit (4) to said engine (1), and undispositivo (5) to produce an ionization current (IC) above each cylinder of said engine (1) comprising a coil (6) having a primary circuit (7) and a secondary circuit (8), a plug deencendido (9), a bias circuit (10) and an acquisition circuit (11), and the following phases realizadaspor housed electronic means in the control unit (4): (300) to admit a fuel to each cylinder (2) delmotor (1); (301) cause a spark in the spark plug (9) in each cylinder (2) whose piston (3) it is at top dead elpunto; (302) register - after the end of the spark produced by the spark plug (9) - lasseñales the ion current produced and detected in the secondary circuit (8) of the device (5) cadacilindro (2) whose piston ( 3) it is in the top dead center (S); characterized in that dichoprocedimiento comprising the steps (303) calculate the average value of S (VMS) signals; (304) Vms compare average values ​​with a predetermined value (V); (305) identifying the cylinder (2) of the motor (1) in which the mean value VM is larger than the predetermined value V.