Amaro (Italian for  bitter ) is an Italian herbal liqueur that is commonly drunk as an after-dinner digestif. It usually has a bitter-sweet flavor, sometimes syrupy, and has an alcohol content between 16% and 40%. Similar liqueurs have traditionally been produced throughout Europe.maro should not be confused with amaretto, another Italian liqueur that is sweet and flavored with almonds or with the pits of drupe fruits such as apricots.
An external combustion engine (EC engine) is a heat engine where a working fluid, contained internally, is heated by combustion in an external source, through the engine wall or a heat exchanger. The fluid then, by expanding and acting on the mechanism of the engine, produces motion and usable work.
The internal combustion engine is a form of machinery in which the combustion of fuel and, in this case, a fossil fuel takes place with an oxidizer i.e. air. This process takes place inside the protective walls of a combustion chamber.he Inventor of the Internal Combustion Engine. Jean Joseph Etienne Lenoir was the creator and inventor of the internal combustion engine. A Belgian engineer, Lenoir was born in Mussy-La-Ville, a part of Belgium in 1822.