The Gasoline Engine
4-Stroke-Engine.gif93572-034-26C16785.jpg


Gasoline engines are 25-27% Efficient


The cycles of a four stroke engine
-The gas enters the cylinder
-The cylinder compresses the gas
-Then the spark plug ignites the gas and it expands pushing the piston out
-The piston pushes the exhaust gas out

Gasoline Engine Timeline

  • 1680 - Dutch physicist, Christian Huygens designed (but never built) an internal combustion engine that was to be fueled with gunpowder.
  • 1807 - Francois Isaac de Rivaz of Switzerland invented an internal combustion engine that used a mixture of hydrogen and oxygen for fuel. Rivaz designed a car for his engine - the first internal combustion powered automobile. However, his was a very unsuccessful design.
  • 1824 - English engineer, Samuel Brown adapted an old Newcomen steam engine to burn gas, and he used it to briefly power a vehicle up Shooter's Hill in London.
  • 1858 - Belgian-born engineer, Jean Joseph√Čtienne Lenoir invented and patented (1860) a double-acting, electric spark-ignition internal combustion engine fueled by coal gas. In 1863, Lenoir attached an improved engine (using petroleum and a primitive carburetor) to a three-wheeled wagon that managed to complete an historic fifty-mile road trip. (See image at top)
  • 1862 - Alphonse Beau de Rochas, a French civil engineer, patented but did not build a four-stroke engine (French patent #52,593, January 16, 1862).
  • 1864 - Austrian engineer, Siegfried Marcus*, built a one-cylinder engine with a crude carburetor, and attached his engine to a cart for a rocky 500-foot drive. Several years later, Marcus designed a vehicle that briefly ran at 10 mph that a few historians have considered as the forerunner of the modern automobile by being the world's first gasoline-powered vehicle (however, read conflicting notes below).
  • 1873 - George Brayton, an American engineer, developed an unsuccessful two-stroke kerosene engine (it used two external pumping cylinders). However, it was considered the first safe and practical oil engine.
  • 1866 - German engineers, Eugen Langen and Nikolaus August Otto improved on Lenoir's and de Rochas' designs and invented a more efficient gas engine.
  • 1876 - Nikolaus August Otto invented and later patented a successful four-stroke engine, known as the "Otto cycle".
  • 1876 - The first successful two-stroke engine was invented by Sir Dougald Clerk.
  • 1883 - French engineer, Edouard Delamare-Debouteville, built a single-cylinder four-stroke engine that ran on stove gas. It is not certain if he did indeed build a car, however, Delamare-Debouteville's designs were very advanced for the time - ahead of both Daimler and Benz in some ways at least on paper.
  • 1885 - Gottlieb Daimler invented what is often recognized as the prototype of the modern gas engine - with a vertical cylinder, and with gasoline injected through a carburetor (patented in 1887). Daimler first built a two-wheeled vehicle the "Reitwagen" (Riding Carriage) with this engine and a year later built the world's first four-wheeled motor vehicle.
  • 1886 - On January 29, Karl Benz received the first patent (DRP No. 37435) for a gas-fueled car.
  • 1889 - Daimler built an improved four-stroke engine with mushroom-shaped valves and two V-slant cylinders.
  • 1890 - Wilhelm Maybach built the first four-cylinder, four-stroke engine.



This type of heat engine is used in everyday cars




Sources:
http://inventors.about.com/od/gstartinventions/a/gasoline_2.htm
media-2.web.britannica.com/eb-media/72/93572