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Tourer
Posts: 324
New Orleans, La, | I was on You Tube today researching Motus motorcycles and in one video one of their owners said that their engine is the first to employ GDI to a motorcycle engine. He said this in a few other videos so I went outside to look at my Vision 106 engine and then at my 2000 92 cu in pre Freedom engine. What I found is that they both seem to have been designed using GDI induction systems. Not being satisfied with that I pulled up my manuel and looked at the fuel injector placement that, at least to me, appears to be GDI. If someone on this forum can enlighten me, if I am interpeting my info wrong, it seems Victory was the first to utilize GDI on an American motorcycle engine. What say you fellow posters? :o |
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Cruiser
Posts: 169
The Vic Shop - Central Iowa | Victory isn't a GDI engine - the fuel is injected in the intake tract like most typical EFI systems. |
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Iron Butt
Posts: 741
Central New York | What I could never understand in my own mind is why. Why go through the expense of design and incorporation of a GDI system and still retain a 'gasoline' system? Why not just finish the job and go to diesel? That way you can offset the added cost of the high pressure fuel system by eliminating the ignition system. And pick up the added bonus of a higher BTU fuel. Personally, I wouldn't be a fan either way. A car with the engine in it's own separate compartment is one thing. Sitting on the engine that has super high pressure plumbing on it is an altogether different matter. I'll pass.
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Visionary
Posts: 2300
Georgia, west of Atlanta | Evolution marches on. Direct cylinder injection will be common place with auto engines the next couple of years, it is on several gasoline models now. Ford is leading that pack in the USA. EPA and further expansion of MPG requirements will eventually make it a must have. I've read that the "limit" right now on the system is engines that operate up to about 8500rpm. Once it's perfected it would probably work very well with low rpm motorcycles like Victory, Harley and the V-twin Japanese cruisers............. |
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Tourer
Posts: 432
Gettysburg, 2008 Tour Premium | The old school term I think is "mechanical" fuel injection. An early BMW 2002 had it and for its time that little car was a little screamer. All other fuel delivery systems require atmospheric pressure to fill the cylinders and draw in the fuel. While that may always be true on a non supercharged or turbocharged engine as far as air delivery a "direct injected' engine can deliver fuel better on-demand and does not depend on ever changing intake velocity. Expense , I believe, is the main drawback but with variable valve timing and all the ways we attempt to aid in filling the our cylinders direct injection may soon have its day. |
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First bike with GDI
