Efficient engines

Granted, carbon dioxide emissions and fuel economy measurements are hardly real-world, but it seems that some automakers have a little more tolerance built into...

Remember Justin Capra, the Romanian inventor of the jetpack? Well's he's done it again. Now, his ingenuity inspired him to build a small car that has a fuel efficiency of 784 miles per gallon! How about that?

Green Car Journal's 2014 Green Car Technology of the Year Award will be announced soon, but at least we know the ten nominees, which...

An engine that uses shock waves has been invented by Norbert Müller at Michigan State University in East Lansing. He presented his baby at a DARPA-E meeting last week and showed how it can reduce fuel consumption and the car's total weight.

The typical internal-combustion engine is no more than 30% thermodynamically efficient, that is, only about 30% of the energy in the fuel actually...

There will be drastic reductions in CO2 emissions for new cars and light commercial vehicles by 2020. The European Commission reported this news as...

A simple redesign of the petrol engine could greatly increase its efficiency when idling or driving at low speeds, as well as reduce the...

Israeli start-up ETV Motors, located in Tel Aviv has invested about $12 million in this technology that combines a car, electricity and a jet engine. The prototype of a modified Prius will be ready next year for testing.

Aircraft engines, specifically the turbojets that are used on aircraft from the humble passenger plane to the monstrous C-17, burns millions of tons of...

German vehicle constructor BMW is trying to show us that it can produce not only fast, luxury and fuel-greedy vehicles, but also very fuel-efficient cars. BMW's 1 series is offering the greenest diesel experience from BMW. The 2 liters four-cylinder diesel...