Date: Tue, 01 Feb 2005 06:54:08 GMT From: "James Sweet" <jamessweetnospamail.com> Subject: Re: Saab newbie
"Valued Customer" <nonospam.com> wrote in message news:0dFLd.3137$Nn1.2162nospamread1.news.pas.earthlink.net... > > There's still something you're missing here. Turbochargers effectively raise > > the compression ratio when under boost, higher compression engines require > > higher octane ratings to prevent detonation due to heated air from the > > compression... > > Not missing anything and I think you failed elementary physics... I > understand a turbo charger is driven by exhaust gasses and those exhaust > gasses are indeed hot. But when a gas is compressed, any gas, it gets > colder by nature... not hotter! Um, no, when you compress a gas it gets hotter, when it expands it gets cooler. How do you suppose a refrigerator works? The compressor compresses the refrigerant until it liquifies and runs through the hot condenser which is cooled by ambient air, and then passes through an orifice tube where it it evaporates into a lower pressure gasseous state and absorbs heat out of the compartment. For that matter about a Diesel engine? Are you trying to say Diesel fuel spontaneously combusts when you freeze it? And I did very well in physics all the way up through college thank you.