Air and fuel ratio

Topic: Air and fuel ratio (Read 1209 times) previous topic - next topic

Air and fuel ratio

February 05, 2013, 02:04:03 AM

Wouldn't the air and fuel mix better if the injectors were located up stream of the pistons inside the intake

I guess what I mean is if the injectors were in the air rails of the Intake wouldn't the fuel and the air mix together better and create smaller molecules and increase efficiency and more horsepower

Wouldn't this also reduce the chances of unburnt fuel getting around the piston rings and dumping into the oil pan

Wouldn't be turbulence caused by the air in the fuel rubbing against the intakes interior break down the fuel molecules even smaller

Air and fuel ratio

Reply #1 – February 05, 2013, 07:10:48 AM

That is one of the reasons Ford went to Direct injection on the newer ecoboost engines, and more power. It has a much greater fuel burn.

Air and fuel ratio

Reply #2 – February 05, 2013, 08:24:45 AM

I think J was implying that the injectors should be in the upper intake runners, but yeah, direct injection into the combustion chamber is how they are improving perfomance these days. Higher fuel pressures can be used for better atomization and fuel delivery can be more precisely controlled and optimized.

Air and fuel ratio

Reply #3 – February 05, 2013, 09:58:51 AM

Wouldn't a carburetor work better at mixing and atomizing fuel prior to injection than an older fuel injection system?

Air and fuel ratio

Reply #4 – February 05, 2013, 10:08:32 AM

Ok, after rereading I see what he's talking about.

Quote from: bryan163;408842

I think J was implying that the injectors should be in the upper intake runners, but yeah, direct injection into the combustion chamber is how they are improving perfomance these days. Higher fuel pressures can be used for better atomization and fuel delivery can be more precisely controlled and optimized.

Air and fuel ratio

Reply #5 – February 05, 2013, 12:39:37 PM

DIESELS found out about DIRECT INJECTION from day ONE. Just saying. Anytime you mix before the fact is SUCKS. And the mixtur will not be consistent. Direct injection is the answer.

DAD always told me when i was building stuff to remember one thing

THE CLOSER TO THE WORK THE MORE EFFICIENT THINGS WILL WORK.

Air and fuel ratio

Reply #6 – February 05, 2013, 05:57:30 PM

so the intake is not the best home to reach 14:1 more quickly and efficiently,, got it.

wonder if anyones put any thoughts into a retrofit kit where direct injection took the place of the fuel injectors then?,, granted the assumption would be the fuel system have already been retrofitted.

the last direct injection i worked on was an older suv,, i think the high presure fuel pump was dead center inside the intake.
the motor washed out when one of those plastic lines busted for whatever reason.

Air and fuel ratio

Reply #7 – February 05, 2013, 05:59:40 PM

Quote from: TOM Renzo;408852

THE CLOSER TO THE WORK THE MORE EFFICIENT THINGS WILL WORK.

LOL,, well then your boss must stand right over top of you!!!!!!!!!!!!!!!!

Air and fuel ratio

Reply #8 – February 05, 2013, 07:39:26 PM

Well True but i am the BOSS!!!

Actually i hate to even say this Jay. But all the guys on another web site had a field day with me and called me everything in the book.

So here goes.

My love for the 2.3 as i worked on it with Ford seems to get me in trouble on blogs for some reason. Anyway here goes. I wanted to use a DUEL PLUG (

plug head for exactly what you are talking about. I wanted to make a direct injection engine. I worked on it Briefly and could not figure out how to get the pressures or the timing it needed. So i did not follow through. But it was a natural as the engine already had a direct access to the cylinder. Be it as it may i slightly had this in my mind but quickly left it behind. Thanks

Air and fuel ratio

Reply #9 – February 06, 2013, 12:37:57 AM

Tom Id actually thought of the same thing!!! LOL Guess it helps I have access to a dual plug 2.3, which is why I even thought of it. I havent even attempted anything. I do wonder if it would even be possible to do?

Air and fuel ratio

Reply #10 – February 06, 2013, 05:32:48 AM

Quote from: Tbird-fanatic;408872

Tom Id actually thought of the same thing!!! LOL Guess it helps I have access to a dual plug 2.3, which is why I even thought of it. I havent even attempted anything. I do wonder if it would even be possible to do?

Actually YES. But with the 2.3 well obsolete it would have to be a NOVICE. Simply put the direct access to the cylinder with it's duel plug setup is 75% of the battle. So all that would be necessary is a HI Pressure Pump and a timing computer. The pressures are quite high and must be precise and deliberate. So how to accomplish this cheaply and accurately. I don't know the answer to that. Thanks.