All websites used for info
http://www.air-quality.org.uk/26.php
https://www.toyota.co.jp/en/kids/faq/d/01/05/
http://mocomi.com/how-does-a-car-engine-work/
https://www.reference.com/vehicles/many-different-types-engines-ec09271b21f4d0c2#
https://en.wikipedia.org/wiki/Cylinder_block
https://www.toyota.co.jp/en/kids/faq/d/01/05/
http://www.infoplease.com/encyclopedia/science/internal-combustion-engine-evolution-internal-combustion-engine.html
https://en.wikipedia.org/wiki/Engine
https://en.wikipedia.org/wiki/Automotive_industry
http://chemistry.stackexchange.com/questions/33490/what-are-the-differences-between-diesel-and-unleaded-gasoline
http://www.mechanicalbooster.com/2014/02/what-are-main-parts-of-automobile-engine.htm
http://www.gsparkplug.com/shop/how-spark-plugs-work/
https://www.reference.com/science/pistons-work-91c51ea6d0f048ac#
https://www.toyota.co.jp/en/kids/faq/d/01/05/
http://mocomi.com/how-does-a-car-engine-work/
https://www.reference.com/vehicles/many-different-types-engines-ec09271b21f4d0c2#
https://en.wikipedia.org/wiki/Cylinder_block
https://www.toyota.co.jp/en/kids/faq/d/01/05/
http://www.infoplease.com/encyclopedia/science/internal-combustion-engine-evolution-internal-combustion-engine.html
https://en.wikipedia.org/wiki/Engine
https://en.wikipedia.org/wiki/Automotive_industry
http://chemistry.stackexchange.com/questions/33490/what-are-the-differences-between-diesel-and-unleaded-gasoline
http://www.mechanicalbooster.com/2014/02/what-are-main-parts-of-automobile-engine.htm
http://www.gsparkplug.com/shop/how-spark-plugs-work/
https://www.reference.com/science/pistons-work-91c51ea6d0f048ac#