Plasma jet ignition is known to be one of the prospective enhanced ignition systems, and it has a great potential to improve ignition reliability and burning rate of lean mixtures. Therefore, in order to confirm the performance and characteristics of plasma jet ignition quantitatively, combustion tests are carried out by varying the governing parameters of plasma jet ignition. Three plasma cavity sizes of 37, 75, 170mm**3, two orifice diameters of 1 and 2. 5mm, and three discharge energies of 0. 3, 1. 5, and 6. 7J are tested in two different types of combustion vessels with lean hydrogen-air mixtures at equivalence ratios of 0. 3 and 0. 4. Furthermore, combustion tests by the use of conventional ignition system with two pointed electrodes are made to compare the burning rates with those by the plasma jet ignition. From the series of tests, the combustion enhancement by the plasma jet ignition is revealed only in the initial stage of combustion.
|Title of host publication||Unknown Host Publication Title|
|Number of pages||8|
|Publication status||Published - Jan 1 1987|
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