To admit the gasoline–air combination into the cylinders and exhaust the burned gases, valves are applied; these are typically opened and shut through the wedging action of cams (projections) on a rotating camshaft which is pushed from the crankshaft by gears or a series. Wise Vocabulary: related words and phrases https://beautyawards16150.onzeblog.com/28971945/the-ultimate-guide-to-machine