Recent content by CHICAGO

I am not pretty sure if that 10% improvement in the MPG is a simply 10% improvement in the gasoline possible energy. The car has a carburated engine and we all know how much deficient is this type of system. My car's engine (602cc) maximum power is only 29 HP at 5500 RPMs. Its normal mileage...

Thanks dacarls for your post. As I know nothing about chemistry I barely understand what you said. Is the water you mentioned that contained in the air as known as humidity ? Does that water help the air/gasoline be more homogeneous? If so, does it mean that acetone will be more noticeable...

Hello alxm The role of acetone in the gasoline is not that of forming a part of the combustion elements but dissolving those tiny drops of gasoline which makes de emulssion so inefficient. Old carburators have problems in atomizing the gasoline well with air because of many reasons, one of...

Good evening you all I have driven about 3000 miles testing very small doses of acetone in my car tank. I started adding a slight 0.1% to the gasoline and I got a 5-6 % better MPG, and I could observe no anomaly in the engine running with the exception of a softer sound, this is an...

Thanks for your answers, Antiphon and Gordianus. To me it sounds convincing. The usual old points-coil ignition systems had an L-C resonant frequencies in the range of 5 to 10 khz. That means a long rise time of the first cycle and the spark breakdown voltage would have an uncertainty value...

. Hi all. Some time ago I read that old competitions car drivers realized that by inserting a gap in the HV cables, the spark in the plug was "reinforced", like getting a more energetic discharge and, consistenly, a better fuel ignition. This is a drawing about what I am talking about...

. I haven't succeeded yet in my search. regards .

Well, really, it is after sparking, when combustion starts what creates the very high pressure to push the pistons. But before the combustion starts, the pressure will be in the range of CR, more or less. Say 150 psi´s ? In the case of air we need about 5000 volts for sparking over a 1mm gap...

HI, my friends Lets imagine a car engine combustion chamber which is fed with an estequiometric fuel mixture (gasoline+air) with a 1mm plug gap. Is there an aproximate algorithm to solve out what voltage is needed to create a spark, based on gas pressure and temperature?. I don't want...

. Vk6kro, Sophiecentaur and Bob_S I really thank you for advising me so wisely on this matter. Obviously, something is wrong in my test and the only place I cannot verify the "lost spark" is inside the coil. I do not know why, but I discarded that possibility, as I know of several 2CV...

I have been watching very carefully that other possible spark and I could see nothing. Is that other element sparking somewhere the only explanation to this issue? Thanks for your time and collaboration. .

OK, that is understood, and, could that be the explanation to the matter that we do have a spark in one plug even if the circuit is open at the other end of the coil? [PLAIN]http://img694.imageshack.us/img694/9557/squemeignition1plug.jpg By chicago49 at 2010-04-01 That is the case when I...

Uhmmmmm, now I see So, may we say that those electrons that are traveling very slowly throu the cable just accelerate when traveling and jumping throu plug gap because their velocity throu the plasma is much higher? Thanks. .

I agree with you sophiecentaur. Now my question: the free excited electrons that definetively struck and maintained the arc, are the most (or very most) of them, those which were between the plug gap? free electrons from the gas molecules and not from the plug cables. That leads us to...

I am aware that it is the high voltage which causes the initial spark but I am still not sure if all the "current" needed to maintain the spark ignited is flowing thru the secondary coil winding. I copy and paste an interesting article I have found about the nature of a spark. The initial...