A complete hydraulic system consists of five parts, namely power element, actuator, control element, auxiliary element and hydraulic medium. The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid, which refers to the oil pump in the hydraulic system, which provides power to the entire hydraulic system. The structural Fòm ponp idwolik yo jeneralman gen ladan ponp Kovèti pou, ponp Vane ak ponp piston . (i.e. various hydraulic valves) controls and regulates the pressure, flow and direction of the liquid in the hydraulic system. According to different control functions, hydraulic valves can be divided into pressure control valves, flow control valves and directional control valves. Pressure control valves are further divided into Valv debòde (tiyo sekirite), presyon diminye tiyo, tiyo sekans, rle presyon, elatriye .; Valv kontwòl koule gen ladan tiyo gaz, reglemante tiyo, reyabilitasyon koule ak tiyo koleksyon, elatriye .; Valv kontwòl direksyon yo enkli tiyo chèk, idwolik kontwòl tiyo chèk, tiyo navèt, ranvèse tiyo, elatriye . Dapre metòd kontwòl diferan, tiyo idwolik ka divize an tiyo kontwòl switch, tiyo kontwòl valè fiks ak pwopòsyonèl kontwòl tiyo {{11} Kalib, nivo lwil oliv ak kalib tanperati lwil, elatriye .
Sistèm idwolik la se sitou ki konpoze de senk pati: eleman pouvwa (ponp lwil), actionneur (lwil silenn oswa motè idwolik), eleman kontwòl (divès kalite tiyo), eleman oksilyè ak mwayen k ap travay . 1. eleman pouvwa (ponp lwil oliv) fonksyon li se konvèti enèji nan mekanik nan likid la nan idwolik enèji presyon lè l sèvi avèk MENOWER a; Li se pati nan pouvwa nan transmisyon idwolik . 2. actionne tiyo . (te kòmanse, soude, ferrule, bride sae), valv boul presyon, rapid-chanjman jwenti, asanble kawotchou, presyon mezire jwenti, kranpon tiyo, elatriye .} ak tank lwil oliv, elatriye ., ki se tou trè enpòtan . 5. medsin yo ki gen pouw yo. reyalize konvèsyon enèji nan ponp lwil ak motè idwolik .
