A new list of the most common words and phrases in the English language in 2013 was overwhelmingly negative. 404 â as in the error message that appears when a web page can't load â and toxic politics both earned top spots, with surveillance, drones and federal shutdown also appearing on the list, from Global Language Monitor.
3. 5 The Internal combustion engine (Otto Cycle) [vw, s & b: 9.13] The Otto cycle is a set of processes used by spark ignition internal combustion engines (2-stroke or 4-stroke cycles).
The two stroke engine employs both the crankcase and the cylinder to achieve all the elements of the Otto cycle in only two strokes of the piston. The fuel/air mixture is first drawn into the crankcase by the vacuum that is created during the upward stroke of the piston.