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...oleum gases without modifications except for the fuel delivery components. Liquid and gaseous [[biofuel]]s of adequate formulation can also be used. ...f hydrogen in many situations is [[Hydrogen_economy#Storage|its storage]]. Liquid hydrogen has extremely low density- 14 times lower than water and requires

...Engines that use gases for fuel are called gas engines and those that use liquid hydrocarbons are called oil engines. However, gasoline engines are often ca ...oleum gases without modifications except for the fuel delivery components. Liquid and gaseous [[biofuel]]s of adequate formulation can also be used.

...ases without major modifications except for the fuel delivery components. Liquid and gaseous [[biofuel]]s, such as [[Ethanol fuel|Ethanol]] and [[biodiesel] ...idered a waste product, and is removed from the engine either by an air or liquid cooling system.

...articularly for mobile purposes in vehicles. Lenoir is said to have tested liquid fuel, such as [[alcohol]], in his stationary engines; but it does not appea ...uilt and patented a second vehicle. This one consisted of two four-stroke, liquid-fueled engines mounted on an old four-wheeled horse cart. The patent, and p

...]] (sometimes also called '''motor spirit''') is a [[petroleum]]-derived [[liquid]] mixture consisting primarily of [[hydrocarbon]]s, used as [[fuel]] in [[i ...ontain [[lead]] or [[sulfur]] [[compounds]] produces [[carbon dioxide]], [[nitrogen oxide]]s, and [[carbon monoxide]] in the [[exhaust]] of the [[engine]] whic

...achieve the desired engine performance, emissions, driveability, and fuel economy. Modern EFI systems meter fuel very precisely, and when used together with :**A slight increase in fuel economy.

...pistons is key to minimising their [[emissions]] and maximising the [[fuel economy]] (efficiency) or the engine. The exact timing of starting this fuel inject ...] to the engine (see [[turbodiesel]]) greatly assists in increasing [[fuel economy]] and power output. Boost pressures can be higher on diesels than gasoline

...ugh the top. This had the advantage of never "flooding" the engine, as any liquid fuel droplets would fall out of the carburetor instead of into the [[intake ...lly speaking, the [[throttle]] or accelerator does not control the flow of liquid fuel. Instead, it controls the amount of air that enters the carburetor.

...stems may have common subsystems or components. The HV provide better fuel economy than a conventional vehicle because the engine is smaller and may be run at ...ons in the engine itself to reduce drag, results in 80%–100% gains in fuel economy compared to four-door conventional cars of similar weight and size.