Method for accurate measurement of output ignition curves for combustion engines

► The method solves the problems of universal programmable ignition units. ► The principle consists in simulating of the engine running by an impulse generator. ► The output is a real curve, which is compared to the input curve from PC. ► We obtain the correction curve by comparing and so we adjust the programmed curve. The method for accurate measurement of output ignition curves for combustion engines is intended to solve the problems of universal programmable ignition control units. Just that versatility of these units originates during their application in specific type of engine, there is a significant difference between the programmed and actual, output curve. Therefore it is necessary to define a correction curve, whereby the programmed curve will be adjusted to ensure the required output. The principle consists in simulating the engine running by means of a impulse generator. The measuring system consists of a high-speed electric motor with an impulse generator, a speed controller of the electric motor and a stroboscopic lamp. The impulse generator is equipped with a circular protractor, on which a ray of the stroboscopic lamp is incident at the time of simulated mixture ignition. The result is a real curve, which is compared with an input curve by means of computer. Comparing the curves we obtain a required correction one.