A device is provided for sensing an electrocardiogram signal of a patient. An accepting section accepts an S number of initial values X1, X2,. A device that performs the method is also disclosed. Thus, the atomization of the injected fuel can be further promoted, and a coalesced fuel spray form having a fuel particle density higher in a central zone and lower in an outer peripheral zone can be formed. Each micro-component contains a gas or gas-mixture capable of ionization when a sufficiently large voltage is supplied across the micro-component via at least two electrodes.