I really don't understand why educated people, regardless of their physics= =20 knowledge do not see past a simple scam. Just a few examples: 1. turn on the AC in your car and gas consumption will increase with 1=20 liter (more or less) every 100km (assuming a medium sized engine 2L/85kW;=20 average alternator) 2. in idle mode, the rpm is instantly increased when significant power=20 is drawn from the alternator (turning of the power steering, turning on the= =20 lighs + stereo +=A0 windscreen wiper + electirc windows) Most modern cars have just the right size alternator. Having an oversized=20 alternator would use up engine power, so mileage would be lower because=20 of this waste of energy. So in order to reduce mileage you could just fit y= our=20 car with a smaller alternator... which would be by far more efficient... The concept might work under certain conditions: - assuming you are hardly drawing power from the alternator and there=20 is excess power to be used for hydrogen separation=20 - you have a big gassgusler engine that generates excess power.... yet=20 again, opting for a smaller engine with more efficient fuel use would be th= e=20 solution These are just my observations as a layman, with only high school level phy= sics background, much of it forgotten.=20 Anyway, I'm considering using one of these hydrogen gizmos on my car,=20 also connect my wipers, windows and stereo to a power panada. This would reduce power consumption and leave alot of extra for separating= =20 hydrogen from water. --- On Fri, 1/28/11, RussellMc wrote: From: RussellMc Subject: Re: [OT] 125 years of the Automobile To: "Microcontroller discussion list - Public." Date: Friday, January 28, 2011, 7:57 AM Red Herring. Various high performance aircraft of past ages, and some today, use water injection to assist top end performance :-). R --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .