In those cases, he said, it is slightly more economical for the engine to run.
Chevrolet Volt -- an elegant four-place plug-in hybrid electric vehicle (PHEV) featuring, like other hybrids, an economical internal combustion engine combined with a battery-powered motor.
It is available only with five-passenger seating and has two strong, economical four-cylinder engines as well as a V-6.
Finally, engineering application of proposed approach is discussed about optimization of Diesel engine under economical requirement and environmental requirements.
Importantly, the engine is economical to build and maintain.
A. Automotive authorities from government to industry agree that with modern cars, it is almost always more economical to stop the engine and restart it when ready to move, even if the idling period is only a minute, and sometimes even less.
Most of the time the system is operated under prevailing fuel-lean conditions, enabling economical running of the engine.
In the new Chinese social divide, the middle class hews to economical vehicles with tiny engines, while the wealthy fuss with automatic climate control in their luxury sedans.
Now the XF has a mid-life re-style under its belt and there's a much wider choice of engines, including economical four-cylinder diesels.
When it appeared in 2006, Audi and its owner Volkswagen were pushing through big investments in diesels, economical small turbocharged petrol engines, and also in efficient self-shifting dual clutch DSG transmissions.
