In an ideal, 100 percent efficient internal combustion engine, the fuel would burn to give just carbon dioxide and water vapor. In practice, of course, engines are far from efficient and the combustion process. Also produces carbon monoxide, oxides of nitrogen, and unburnt hydrocarbons, as well as carbon dioxide and water vapor. Also, read How a diesel engine works The engine – how power is created Ford CVH Lean-burn engine In 1980 Ford introduced their CVH engine in the Escort 3 to replace the old five-bearing pushrod OHV Kent engine. The engine’s designation derives from its design — Compound Valve angle, Hemispherical combustion chamber. Now the CVH has been re-engineered to make it an accurate lean-burn engine capable of running … Continue reading Lean burn engines