Carmakers utilizing advancements in technology to increase efficiency, power of modern engines

Direct Injection:
When fuel injection first came into existence, a single fuel injector was placed at the front of the engines intake tract to allow more control over the amount of fuel used by the engine. That was some time ago, and the evolution of technology in this area has now made available something

(Photo: Justin Pritchard, Auto123.com)

called Direct Injection. Direct injection moves the fuel injectors right into the combustion chamber, just like a spark plug. This gives engineers an unprecedented level of control over the amount of fuel used, with power and economy benefiting as a result.

Two examples of direct-injection technology really impress. Audi and Mazda both utilize turbochargers and direct-injection technology to create plenty of power from small, four cylinder engines. Audi's 2.0 litre turbocharged engine generates over 200 lb. ft. of torque, while Mazda's 2.3 litre turbo mill creates nearly 275 horsepower. Both engines are versatile and achieve reasonable fuel consumption figures despite their output. Most impressive is their fat, wide torque curves which are available from very low RPM's.

These are just a few examples of dozens of advancements which help to make today's powerplants better than ever. If you want a car with an engine that goes above and beyond, consider one of the following:

• Mazda CX7 / Speed3 / Speed6
• Volkswagen Golf GTI
• Chevrolet Impala SS
• Chrysler 300C / Magnum RT / Charger RT