Igwe dị n’ime rotor mmanụ n’izugbe nwere 4 ma ọ bụ karịa 4 ezé convex, ọnụ ọgụgụ nke ezé concave nke mpụga rotor bụ otu karịa ọnụọgụ nke akụkụ convex nke rotor dị n’ime, nke mere na n ’ime na mpụta na-atụgharị na nkuku uzo nke rotor bu subcycloidal.

Ezubere profaịlụ ezé nke rotor ka ọ bụrụ na mgbe rotor na-agbagharị n'akụkụ ọ bụla, profaịlụ ezé nke ezé ọ bụla nke rotor dị n'ime na nke dị n'èzí nwere ike ịkpọtụrụ ibe ha mgbe ọ bụla. N'ụzọ dị otú a, oghere oghere anọ na-arụ ọrụ na-etolite n'etiti n'ime rotors na n'ime. Site na ntụgharị nke rotor, olu nke oghere anọ na-arụ ọrụ na-agbanwe mgbe niile. N'akụkụ nke oghere oghere, n'ihi ntụgharị nke rotor, olu na-eji nwayọọ nwayọọ na-abawanye, na-ebute agụụ, na-etinye mmanụ ahụ, rotor na-aga n'ihu ka ọ gbanwee, a na-ebute mmanụ ahụ n'akụkụ ọwa mmanụ, n'oge a, rotor na-abanye na njikọ aka, nke mere na ọnụ ọgụgụ na-enweghị ihe ọ bụla na-ebelata, nrụgide mmanụ na-abawanye, a na-amịpụta mmanụ site na ezé ma zipụ ya site na nrụpụta mmanụ. N'ụzọ dị otú a, ka rotor na-aga n'ihu na-agbagharị, a na-amị mmanụ ma na-apị mmanụ mgbe niile.

Mgbapụta ụdị mmanụ mgbapụta nwere uru nke kọmpat, obere nha, ibu dị nfe, nnukwu agụụ agụụ mmanụ absorption, nnukwu mmanụ mgbapụta, ezigbo mma nke ntinye mmanụ na ọnụ ala. Ọ na ọtụtụ-eji na-ajụ na obere engines.Its ya bụ na eji eguzogide nke meshing elu nke n'ime na elu rotor ibu karịa nke gia mgbapụta, otú ahụ ka ike oriri ibu.