Fuel injection
11-14-05, 09:10 AM
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Fuel injection
Hey I am seriously considering converting my carbeurated na 13b to fuel injection. I was wondering if there are anygood things to know or if you have any ideas on what i should purchase. thanks in advance
11-14-05, 04:22 PM
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Originally Posted by 8413b
Hey I am seriously considering converting my carbeurated na 13b to fuel injection. I was wondering if there are anygood things to know or if you have any ideas on what i should purchase. thanks in advance
11-14-05, 04:29 PM
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one thing to consider: rotary engines aside from the renesis have incredible overlap in the intake and exaust phases of the rotor face.
only SEQUENTIAL electronic fuel injection is capable of timing the injection pulse after the overlap is complete, ensuring gasoline enters the combustion chambers, and not the third cylinder (exaust
megasquirt might be SEFI capable on the rotary engines, but not fresh outta the box.
as a side note, im trying to design an SEFI system around a pic18F, which oughta be overkill for 2 fuel injectors. (or two ganged sets of injectors), but dont hold your breath.
only SEQUENTIAL electronic fuel injection is capable of timing the injection pulse after the overlap is complete, ensuring gasoline enters the combustion chambers, and not the third cylinder (exaust
megasquirt might be SEFI capable on the rotary engines, but not fresh outta the box.
as a side note, im trying to design an SEFI system around a pic18F, which oughta be overkill for 2 fuel injectors. (or two ganged sets of injectors), but dont hold your breath.
11-14-05, 06:15 PM
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I don't really know what all that means exactly.. You don't need sequential fire injection capability exclusively to run any particular engine if that's what you're saying.
Megasquirt is the single best ECU for the money, hands down. It works quite well with rotaries, even ignition. Go check out the megasquirt section on this forum for more info.
Megasquirt is the single best ECU for the money, hands down. It works quite well with rotaries, even ignition. Go check out the megasquirt section on this forum for more info.
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11-15-05, 09:58 AM
#9
Absolute Power is Awesome
Originally Posted by SparkienSuggah
one thing to consider: rotary engines aside from the renesis have incredible overlap in the intake and exaust phases of the rotor face.
only SEQUENTIAL electronic fuel injection is capable of timing the injection pulse after the overlap is complete, ensuring gasoline enters the combustion chambers, and not the third cylinder (exaust
megasquirt might be SEFI capable on the rotary engines, but not fresh outta the box.
only SEQUENTIAL electronic fuel injection is capable of timing the injection pulse after the overlap is complete, ensuring gasoline enters the combustion chambers, and not the third cylinder (exaust
megasquirt might be SEFI capable on the rotary engines, but not fresh outta the box.
There is a benefit to sequential injection in a rotary with injection near the ports as in the S4 and S5. It allows the injection to occur at a point that prevents the closing intake pulses from pushing the mixture back up the intake port. But it's not going to have a very big effect of the running of the engine.
In 8413b's case, if he's looking to add injection at the throttle body or in the upstream intake ports as in the GSL-SE, sequential injection wouldn't really make any difference at all.
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