The costs of car usage, which may include the cost of: acquiring the vehicle, repairs and auto maintenance, fuel, depreciation, driving time, parking fees, taxes, and insurance,5 are weighed against the cost of the alternatives, and the value of the benefits ? perceived and real ? of vehicle usage.
The ability for humans to move flexibly from place to place has far-reaching implications for the nature of societies.8Źródło: https://en.wikipedia.org/wiki/Economics_of_car_use
Reciprocating piston engines are by far the most common power source for land and water vehicles, including automobiles, motorcycles, ships and to a lesser extent, locomotives (some are electrical but most use Diesel engines45).Rotary engines of the Wankel design are used in some automobiles, aircraft and motorcycles. Where very high power-to-weight ratios are required, internal combustion engines appear in the form of combustion turbines or Wankel engines.Powered aircraft typically uses an ICE which may be a reciprocating engine.Airplanes can instead use jet engines and helicopters can instead employ turboshafts; both of which are types of turbines.In addition to providing propulsion, airliners may employ a separate ICE as an auxiliary power unit.Wankel engines are fitted to many unmanned aerial vehicles. Big Diesel generator used for backup power Combined cycle power plant ICEs drive some of the large electric generators that power electrical grids.They are found in the form of combustion turbines in combined cycle power plants with a typical electrical output in the range of 100 MW to 1 GW.
The high temperature exhaust is used to boil and superheat water to run a steam turbine.Thus, the efficiency is higher because more energy is extracted from the fuel than what could be extracted by the combustion turbine alone.
In combined cycle power plants efficiencies in the range of 50% to 60% are typical.In a smaller scale Diesel generators are used for backup power and for providing electrical power to areas not connected to an electric grid. Small engines (usually 2?stroke gasoline engines) are a common power source for lawnmowers, string trimmers, chain saws, leafblowers, pressure washers, snowmobiles, jet skis, outboard motors, mopeds, and motorcycles.Źródło: https://en.wikipedia.org/wiki/Internal_combustion_engine