write your congress-critter - increased ethanol in gasoline
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From: jim on 21 Jun 2010 13:19 jim beam wrote: > > sorry, but not knowing the basics of thermodynamic efficiency or the > difference between octane rating and energy yield is not "vested > interest", it's retardation. Too bad you have no idea what any of those big sounding words you are mumbling mean. There is a thing called flex fuel vehicles. It has been shown in several studies that flex fuel vehicles get optimum miles per gallon when the fuel is a blend around the 20%-30% ethanol range. This is of course no big surprise. These engines are designed to run with ethanol in the tank and mileage drops off when pure gasoline is in the tank. But here is a study that surprised lots of people: http://green-fuels-vehicles.suite101.com/article.cfm/ethanol_gas_tests_surprising Today some engines get better mileage on ethanol blends and some engines don't. In the future every car made for the US market will get better gas mileage on ethanol blends because manufacturers will be designing engines to run best on what they know will be in the vehicle's fuel tank.
From: jim on 21 Jun 2010 14:05 jim beam wrote: > > right, because octane = energy yield, right? freakin' retard. > No, nobody but the retarded Mr. Bean says " octane = energy yield". You have lots of weird and incoherent ideas. Octane is a property of a fuel. Energy yield does not predict how far down the road a vehicle travels on a gallon of fuel. The typical gasoline engine is wasting around 75% of the energy yield. 75% of the calories in the fuel produce nothing but wasted heat. Only 25% of the energy content of the fuel contributes to moving the car down the road. If you can improve the efficiency so that the engine is wasting only 74% instead of 75% of the calorie content of the fuel, then you will have increased the miles it travels on a gallon by 4%. That means even if the fuel used contains 3% less energy per gallon you still travel a little farther farther down the highway on a gallon of fuel. This explanation of course is way more complicated than anything you read in your owners manual so there is little hope that your pea brain will understand any of it.
From: jim on 21 Jun 2010 14:13 jim beam wrote: > > > > Oh really? Apparently you never heard of the diesel engine. A diesel is > > typically 20% more efficient per calorie that a gasoline engine. > > T-H-E-R-M-O-D-Y-N-A-M-I-C-S retard. you've evidently never heard of it. Do you think that putting capital letters interspersed with dashes in your reply explains why a diesel produces more mechanical power per calorie of fuel than a gasoline engine does? Is this something your owner's manual didn't explain - so now you are completely lost?
From: jim on 21 Jun 2010 14:35 jim beam wrote: > > so what part of an engine needs to be "designed" for ethanol combustion > OK that is a fair question. Lets see, shape of the combustion chamber, valves, camshaft, pistons, crankshaft, connecting rods, fuel injectors, intake manifold, throttle body, block, waterjacket..... Probably a few more that I missed. Spark plugs may be redesigned or stratified charge compression ignition may be used instead. Higher ethanol content in passenger car fuel will bring about lots of changes to engine design. -jim
From: jim beam on 21 Jun 2010 18:07
On 06/21/2010 11:05 AM, jim wrote: > > > jim beam wrote: > >> >> right, because octane = energy yield, right? freakin' retard. >> > > No, nobody but the retarded Mr. Bean says " octane = energy yield". You > have lots of weird and incoherent ideas. oh dear, trying to deceive by quoting me out of context again retard? sorry, doesn't work - YOU are saying octane = energy content, not i. > > Octane is a property of a fuel. Energy yield does not predict how far > down the road a vehicle travels on a gallon of fuel. having trouble with thermodynamic principles again? [rhetorical] > The typical > gasoline engine is wasting around 75% of the energy yield. er, that's not a problem with the energy content retard. see above... > 75% of the > calories in the fuel produce nothing but wasted heat. Only 25% of the > energy content of the fuel contributes to moving the car down the road. > If you can improve the efficiency so that the engine is wasting only 74% > instead of 75% of the calorie content of the fuel, then you will have > increased the miles it travels on a gallon by 4%. That means even if the > fuel used contains 3% less energy per gallon you still travel a little > farther farther down the highway on a gallon of fuel. and that /still/ doesn't mean that ethanol is more efficient! thermodynamics rules the universe. learn about it. > > This explanation of course is way more complicated than anything you > read in your owners manual so there is little hope that your pea brain > will understand any of it. don't put false words in my mouth retard. you are the one that doesn't understand basic science. lower energy content means more fuel needs to be consumed. end of story. -- nomina rutrum rutrum |