ECOTEC wrote:
明明寫說是 V...(恕刪)
柴油缸內直噴的關鍵在於供油壓力的高低及供油時間的準確性
VAG搞PD一開始是想搞獨家, 而與早期的CR相較確實是有優勢, CR到了後期(應該是3代以後)才趕上PD"..Pumpe Düse engines had a significantly higher injection pressure than older engines, they are slightly less refined when compared to the very latest common rail,"
但是PD改用壓電是噴油後噴油控制的精確度大幅提升,(...current PD TDI engines now utilise piezoelectric unit injectors, allowing far greater control of injection timing and fuel delivery..)
"slightly less" vs "far greater", 你看懂不懂?
至於成本問題, 去問一下PD的噴油嘴與CR的每隻價格差多少?就知道了...
