I figure its time to think about the future, DIRECT CHAMBER INJECTION, you could add one or two injectors right in the middle of the sparkplug area, cant preignite or blowback the air if there is no fuel in it, on compression, then Hipressure direct inject, 2000 psi for gasoline, there has come available some nice injectors and pumps, special for D/I, GM s got some nice stuff, and the atomization would be fantastic, studies have shown that for each 1 bar increase in pressure the size of the atomized beads reduce in size by 50%, by reducing size you expose more surface to the available Oxygen. YES Iknow a lot if experimentation, but its what you guys are doing anyway. I suppose this will get tossed under the table like my ideas on Nitromethane and I got a lot of them too!

 

hears one to think about , you could make a sparkplug that is hollow down the center of the the electrode and squirt the fuel in that way, also cool the plug at the same time. I think its a doable idea! Ron

 

the mazdaspeed 6,3 and cx7, have direct injection, they use a lower pressue than the germans do; mazda is 1800ish, the germans are @65,000psi

yeah, thought about it too

 

the way that a D/I pulse works,is it may start out at 1800-2000, called opening or break press., then ramps up to at least 5000psi maybe even 10000psi then tapers off to shut off quickly so as there is no after injection, after inj. causes emission probs. I have heard rumers as to 25000psi but that is in diesel, I donno about 65000psi what kind of mechanical equipment could do that. that much press. could split an inj. body wide open. I have heard of now they are double pulsing the injectors in a single pulse, so as to spread out the time length, for economy. anyway I suppose this D/I stuff may become more popular in the future, I remember in 1985 nobody knew anything about regular electronic inj. some interesting times ahead, makes life FUN. Ron

 

I suppose you may be able to replace the trailings with an injector from a diesel VW. I you look up the Honda I-Vtec I its using DI.

 

Mazda has expirimented with dirrect injection in the past. It solves allot of problems that the rotary engine has. There are some details in the book Mazda rx7 sports car color history. With dirrect injection in some of the mazda prototypes. They claim to have gotten the thermal efficency so good that the exhaust was unable to light the cat converters because it was to cold. This is incredibly significant, a combination of the dirrect injection with the renisis side exhaust port, could pottentiolly solve all of the efficency problems of the rotary engine.

 

one of my customers pointed out that a pressure washer is like 10x more pressure than even the german injection system....

the mazda setup, uses the normal in tank pump, and then theres another pump on the cylinder head to boost the fuel pressure

 

This was my first thought on opening this thread. I didnt know anyone has actually succeeded in doing it tho.

 

Imports own,, w2hich V/W injector would you use , it would have to be electronic, V/W used mechanical injectors up to 2004 and ther is no practical way to inject gasoline thru a mechanical diesel pump, also diesel injectors would not spray and atomize gasoline properly, and why not buy an elecronic injector that is already made for gasoline. like the new GM D/I squirters. and definatly dont give up on any ideas you got because D/I it is the way of future combustion methods! also check out PIEZO injector technologys by BOSCH.

 

You would want the injector closer to a sprkplug then the trailing plug hole is.

 

you would bore into the housing, just like P-port, then put in an injector bung. never said it would be easy!! now you would have to figure out a HI-Pressure pump drive , the engine managment will take some thought, but maybe use somthing simple like the GM computor used in the D/I Saturn Sky Red line. by the way you are not going to the JUNK Yard for your parts? and last but not least!! why not have the fuel injected thru the center of the hollow spark plug electrode, keep it cool also. just tossin out ideas for yuo young dudes. Ron