Q: I have a 2009 VW with gasoline direct inject and a 2.0-liter turbo engine. It recently needed the intake valves cleaned (a very costly job) after just 54,000 miles. I understand many manufacturers ...

Gasoline direct injection, or GDI, is one of the most crucial bits of technology in the modern internal combustion engine. In engines equipped with GDI, highly pressurized gasoline is sprayed directly ...

Gasoline direct injection (DI) engines have been lurking in the shadows of gasoline-burning, internal combustion engine development for decades but are now becoming mainstream. This is all good, as DI ...

Q: I own a 2019 Subaru Forester. It has a direct injection engine. DI appears almost unavoidable now. I am very happy with my new Forester but am wondering whether there is anything I can do to ward ...

SAE International Journal of Engines, Vol. 10, No. 5 (December 2017), pp. 2535-2551 (17 pages) Natural gas is a promising alternative fuel for internal combustion engine application due to its low ...

If you flip through the list of features on just about any new car or truck, you’re likely to see the words “direct fuel injection,” or DI. The concept is straightforward enough -- engineers have ...