Ishingiro ryo gutandukanya impeta zo hejuru cyangwa comp nimpeta ya piston nuko impeta yo hejuru irabagirana, yera, nubunini, kandi impeta ya comp yijimye, umukara, kandi yoroheje. Nukuvuga, impeta yo hejuru ni silver yera naho comp impeta ni umukara. Impeta yo hejuru irasa kurusha impeta ya comp, kandi impeta yo hejuru irabyimbye. Impeta ya comp iroroshye.

Impeta ya piston izaba ifite ikimenyetso, kandi muri rusange uruhande rufite inyuguti nimibare ireba hejuru. Impeta ya piston nigice cyingenzi cya moteri ya lisansi. Ifunga gaze ya lisansi hamwe na silinderi, piston, nurukuta rwa silinderi. Moteri ya lisansi na mazutu ifite amavuta atandukanye, bityo impeta ya piston ikoreshwa nayo iratandukanye. Imikorere ine yimpeta ya piston ni ugufunga, kugenzura amavuta (guhindura amavuta), gutwara ubushyuhe, no kuyobora. Gufunga bisobanura gufunga gaze kugirango wirinde gaze mucyumba cyaka kugirango idatembera mu gikarito kugira ngo ubushyuhe bukorwe neza. Kugenzura amavuta nuguhanagura amavuta arenze amavuta kurukuta rwa silinderi mugihe utwikiriye urukuta rwa silinderi hamwe na firime yoroheje kugirango ubone amavuta asanzwe. Gutwara ubushyuhe ni ugutwara ubushyuhe kuva piston kugera kuri silinderi kugirango ukonje.