small engine EFI
small engine EFI
(OP)
I'm looking for a electronic fuel injection conversion kit for a 20hp single cylinder engine. Does anyone know where i can buy something like this?
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RE: small engine EFI
Rod
RE: small engine EFI
http://
There is a wide variety of aftermarket ECUs on the market as well - at higher cost.
Regards
Nick
RE: small engine EFI
I'm looking for a fuel efficient engine.
RE: small engine EFI
My stock 2007 Honda CBR125R has a fuel injected 12 horsepower single cylinder engine. There are quite a number of other fuel injected single cylinder motorcycle engines. But without even the faintest hint of what the application is ... the rest of us have no idea whether you have need for the gearbox that is inseparable from that style of engine, whether the throttle is manually operated or has to be under some sort of governed automatic control (generator, snowblower, etc), and a ton of other factors.
RE: small engine EFI
RE: small engine EFI
http://marine.honda.com/Products/modeldetail/BF20
For diesel applications...
http:
This was waaaaay too easy, 19Delta!
Rod
RE: small engine EFI
The CBR125 engine is a single overhead cam hemi head, the CBR150 engine is a DOHC 4-valve pentroof. Both have rolling-element bottom ends. The DOHC arrangement opens up the option of you tinkering with the cam timing of intake and exhaust independently to optimize it for your needs.
RE: small engine EFI
Does anyone have fuel consumption data for engines in this size range?
RE: small engine EFI
RE: small engine EFI
Bike engine including all the electronics, chain drive to a rear axle (you will need to figure out how to make a differential happen with a chain drive), use the motorcycle's 6-speed sequential transmission as is, have a battery driven electric motor engage somehow for reverse. Maybe swing the whole motor and reverse gearbox with a sprocket attached to it into the path of the chain when reversing and swing it completely out of engagement otherwise to avoid causing extra drag.
Your vehicle had better be very light. The CBR125 only weighs about 260 lbs. Acceleration and hill climbing is okay up to about 80 km/h and can only be described as "extremely slow" above that. In a substantially heavier vehicle, you're not going to have acceleration or hill climbing ability that anyone would describe as acceptable.
RE: small engine EFI
http://www.helicalcamshaft.com/
I have seen this cam run and its idle and part-load economy are remarkable - combined with a very high CR it would have about as high a TE as an SI engine could manage.
Speaking of SI engines - the rules seem to allow diesels - surely this would be a simpler approach?
Possibly again the CR could be raised to 30:1 or so and the compression pressure limited by a fixed amount of LIVC.
RE: small engine EFI
RE: small engine EFI
I had a fuel injected 20HP Kawasaki V-2 gasoline engine on my 1990 John Deere 285 tractor. It used a single twin jet port fuel injector, and a rudimentary controller, to feed fuel to both intakes. It was open loop, and was meant to replace the carbs to eliminate maintenance. I doubt if it was any more efficient than the carbs. However, this controller was simple enough to reprogram. You could adapt that to a 20hp single without too much difficulty, assuming the parts are still available through Deere.
-Tony Staples
www.tscombustion.com
RE: small engine EFI
Now i need to find a engine dynamometer in Houston or San Antonio. Has anyone ever made a dyno? How did that turn out? Was it very accurate?
RE: small engine EFI
Simple, and relatively inexpensive. You can built the whole setup for less than $10k.
-Tony Staples
www.tscombustion.com