直噴引擎的pm2.5與對策

早在6年前歐盟已針對汽油缸內直噴引擎造成的pm排放問題，
進行了研究與建議。
幾個重點：
1. 汽油缸內直噴引擎GDI雖較為節能但造成的pm排放，將逐漸取代柴油車成為主要的pm汙染源
2. 數十歐元就能安裝的汽油碳微粒過濾器GPF，能把GDI排放的pm消除，
且汽油引擎的高溫排氣能加強GPF的功效並延長其使用壽命
3. 為實際達到更嚴格的排放標準，GPF是必要的
文末寫到：
Vehicle manufacturers are clearly aware of the issue, but, to date have declined to fit a GPF to address the problem despite the overwhelming benefits and low cost.

Vehicles are the most important cause of the urban air pollution crisis in Europe. The shift to GDI engines for petrol cars offers important fuel economy and CO2 benefits but runs the risk of worsening particle pollution, the most important cause of deaths and ill-health. A GPF is a cheap, simple and effective solution that carmakers should fit to cars with GDI engines.

不知道現在那麼多的缸內直噴引擎汽油車，有沒有加裝GPF?