Cars
Also in 1794, robert street patented an internal combustion engine, which was also the first to use liquid fuel, and built an engine around that time. In 1798, john stevens built the first american internal combustion engine. In 1807, swiss engineer françois isaac de rivaz invented a hydrogen-based internal combustion engine and powered the engine by electric spark. In 1808, de rivaz fitted his invention to a primitive working vehicle – "The world's first internal combustion powered automobile". The camshaft may press directly the stem of the valve or may act upon a rocker arm, again, either directly or through a pushrod. When discussing engines, we must consider both themechanical operation of the machine and thethermodynamicprocesses that enable the machine to produce usefulwork. The basic mechanical design of the wright engine is remarkably similar to modern,four-stroke,four cylinderautomobile engines. As the name implies, thecombustion processof an internal combustion...