I-injini ye-D-VVT kukuqhubela phambili kunye nophuhliso lwe-VVT, isombulula iingxaki zobugcisa ezingenakoyisa i-injini ye-VVT.

I-DYYT imele i-Dual Variable Valve Timing. Kunokuthiwa luhlobo oluphambili lwetekhnoloji yenkqubo yevalvu eguquguqukayo yangoku.

Injini ye-DVVT yeyona nto intsha ikhuphisanayo esekwe kuphuculo olubanzi lwe-injini ye-VVT. Isetyenziswe kwiimodeli eziphezulu ezifana ne-BMW 325DVVT. Nangona umgaqo we-injini ye-DVVT ufana ne-injini ye-VVT, i-injini ye-VVT inokulungelelanisa kuphela i-valve yokungena, ngelixa i-injini ye-DVVT inokulungelelanisa i-intake and exhaust valves ngaxeshanye. I-Roewe 550 1.8LDVVT inokuphinda ifikelele kuluhlu oluthile lwe-engile ngokwezantya ezahlukeneyo ze-injini. Isigaba sevalve yangaphakathi silungelelaniswa ngomgca kwaye sineempawu ezibalaseleyo zokuguqulwa okuphantsi, i-torque ephezulu, ukuguqulwa okuphezulu kunye namandla aphezulu.

I-injini ye-D-VVT isebenzisa umgaqo ofanayo kwi-injini ye-VVT, kwaye isebenzisa inkqubo yekhamera ye-hydraulic elula ukufezekisa imisebenzi yayo. Umahluko kukuba i-injini ye-VVT inokulungelelanisa kuphela i-valve yokungena, ngelixa i-injini ye-D-VVT inokulungelelanisa i-intake and exhaust valves ngexesha elinye. Ineempawu ezibalaseleyo zokuguquguquka okuphantsi, i-torque ephezulu, ukuguqulwa okuphezulu kunye namandla aphezulu. indawo ephambili. Ngokwemigaqo ye-layman, njengokuphefumla komntu, ukukwazi ukulawula "ukukhupha umoya" kunye "nokuphefumla" ngesigqi njengoko kufuneka, ewe, kunokusebenza okuphezulu kunokulawula nje "ukuphefumlela".