meritt unthrottled spark ignition combustion Archives – The Green Optimistic green tech news, since 2008 Sat, 26 May 2012 16:01:45 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 MUSIC – A new, green, more efficient petrol engine https://www.greenoptimistic.com/music-a-new-green-more-efficient-petrol-engine-20080402/ https://www.greenoptimistic.com/music-a-new-green-more-efficient-petrol-engine-20080402/#comments Tue, 01 Apr 2008 22:31:32 +0000 https://www.greenoptimistic.com/index.php/2008/02/02/music-a-new-green-more-efficient-petrol-engine/ A simple redesign of the petrol engine could greatly increase its efficiency when idling or driving at low speeds, as well as reduce the harmful emissions it produces. UK researchers say the new design could even make petrol engines as efficient as diesel ones. In most petrol engines, fuel is ignited by spark plugs inside […]

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