Kumazwe ahlukeneyo kwihlabathi jikelele, kukho imfuneko yophuhliso lwezolimo kunye nokuhamba kwamanzi edolophini, kwaye iimpompo zamanzi ziyimveliso ebalulekileyo. Ke ngoko, impompo yamanzi ye-injini yepetroli phantsi kwe-Ouyixin Electromechanical nayo inokuhlangabezana ngokuchanekileyo nale mfuno.
Impompo yamanzi ye-injini yepetroli yimpompo ye-centrifugal. Umgaqo wokusebenza wempompo ye-centrifugal kukuba xa umpompo uzaliswe ngamanzi, injini iqhuba i-impeller ukuba ijikeleze, ivelise amandla e-centrifugal.