Omulimu gwa exhaust catalytic converter
Ekyuma ekikyusa omukka ogufuluma mu mmotoka (exhaust catalytic converter) kitundu ku nkola y’omukka ogufuluma mu mmotoka. Kye kyuma ekirongoosa omukka ogufuluma nga kikozesa ekirungo ekikyusa CO, HC, ne NOx mu ggaasi ezifuluma mu ggaasi ezitali za bulabe. Era kiyitibwa ekikyusakyusa (catalytic converter). Ekikyusa ekirungo kya katalisi kikola nga kikozesa ensengekera z’omukka, okukendeeza, amazzi-ggaasi, n’ensengekera z’okutereeza omukka wansi w’ekikolwa ky’ekiziyiza okukyusa ggaasi essatu ez’obulabe (CO, HC, ne NOx) okufuuka ggaasi ezitali za bulabe: kaboni dayokisayidi, nayitrojeni, haidrojeni, n’amazzi. Okusinziira ku nkola y’okulongoosa, ebikyusa katalisiti bisobola okugabanyizibwamu nga ebikyusa ebirungo ebikyusa omukka (oxidation catalytic converters), ebikyusa ebirungo ebikendeeza, n’ebikyusa ebikyusakyusa eby’amakubo asatu-.
Olw’ebisaanyizo ebikakali eby’okukuuma obutonde bw’ensi, mmotoka zeeyongera okubeera n’ebyuma ebikyusa omukka ogufuluma mu mmotoka ne sensa za oxygen. Bwe kiteekebwa mu payipu y’omukka ogufuluma mu yingini, kikyusa ggaasi essatu ez’obulabe ezifuluma (CO, HC, ne NOx) ne zifuuka amazzi agatali ga bulabe, kaboni dayokisayidi, ne nayitrojeni okuyita mu nkola za oxidation-reduction reactions. N’olwekyo, era kiyitibwa ekikyusa ekikyusakyusa eky’amakubo asatu-. Ebiziyiza byayo bitera okubaamu ebyuma eby’omuwendo nga platinum ne germanium, oba elementi ezitali nnyingi.
