Automobile engines have undergone tons of changes over the years, primarily to make them more efficient. For the most part though, engine changes result from a string of iterative improvements on ...

It’s the direct-injection (DI) engine, the latest technology designed to squeeze more mpg out of cars. And it has actually been delivering results. For example, the Mazda3’s combined fuel ...

It's the direct-injection (DI) engine, the latest technology designed to squeeze more mpg out of cars. And it has actually been delivering results. For example, the Mazda3's combined fuel economy ...

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 ...

Using diagrams from Bosch ... off just driving an older car if we're worried about maintaining a direct injection engine.

The answer is bringing fuel to the fire by two separate paths, and a few makers already are fitting their engines with both port and direct injection. Toyota introduced this technology ...

an intention confirmed by the fact that the patent application for the new twin-spark direct injection rotary engine features a diagram highlighting how fuel consumption will be decreased.

Walnut blasting a good—if expensive, as the intake manifold has to come off—way to maintain engine performance for the life of a direct-injection car. Consumer Reports even notes that it's BMW ...

GM was on the forefront in 2003 when it introduced the new Ecotec four-cylinder engines using what it called Spark Ignition Direct Injection (SIDI). A few years later came the 3.6L LLT V-6 ...