A hybrid engine is a type of engine that uses both gasoline (or diesel) and electricity to power a vehicle. It combines the advantages of both power sources to increase fuel efficiency and reduce emissions. Full definition
«Even the best ethanol - producing technologies with hybrid engines aren't enough to overcome this,» he says. (sciencemag.org)
As a plug in hybrid the engine is able to meet the emission regulations in the future for years. (evo.co.uk)
The ships feature an elegant Scandinavian design and «green» features, such as solar panels, an onboard organic herb garden and energy - efficient hybrid engines for a remarkably smooth ride. (riversandoceancruises.com)