BAAT - world records for electric vehicles with zinc-air Message Board

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Microcap & Penny Stocks : BAAT - world records for electric vehicles with zinc-air

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To: shashyazhi who wrote (931)	2/7/1998 2:53:00 AM
From: Ara	Read Replies (3) of 6464

The pistons in a diesel engine do not have to made of aluminum because all diesel engines make comparable power to gasoline engines at LOWER RPMs through the process of high compression. In fact I've NEVER heard of an aluminum pistoned diesel engine. Diesels use cast iron pistons and due to the fact that iron is harder, the pistons can still be kept light by keeping the wall thickness at a minimum. With a cast iron piston a lot of weight can be shaved off at the crown ( the top) of the piston by making it thinner than an aluminum piston would have to be, as you said, to withstand the temperatures. As for cooling, turbocharged diesels are usually intercooled where the intercooler cools down the incoming air into the cylinder, again, keeping the combustion temperatures controlled. I could go on and on here with long skirted pistons, combustion chamber designs etc. but you get the idea, NO ALUMINUM in a diesel engine because NO HIGH RPMs in a diesel engine. When was the last time you saw an eighteen wheeler whiz by at 7000 rpm? Never, they redline at 2500.

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