Anyone know any bikes that use direct injection?

[0l0dom0l0]

Just making a project on DI for a uni assignment, want to taylor it to bikes a bit more instead of cars. Anyone know any bikes that use DI?


____________________
CBT Passed: 30/08/2009, Theory Passed: 31/08/2010, Mod 1 Passed: 6/9/2010, Mod 2 Passed: 13/09/2010. Restriction ended 13/09/2012.

Bikes: 2007 Derbi GPR 50, 1998 Yamaha Fazer 600 (written off), 2002 Yamaha Fazer 600, 1994 CBR 600F, 2003 Triumph Daytona 600, Kawasaki ZX6R J1.....Current: 2006 Yamaha FZ6, 1998 Suzuki TL1000R and a Honda VFR 400 NC30.

[G]

Bimota V-Due is the only one I can think of off hand.

(Though I believe there was a 'recall' to swap it to carbs due to issues with the direct injection, which may help explain why there haven't been more ).

Oh and that diesel KLR based bike probably does as well.

[MarJay]

There is an aprilia two stroke scooter with it. Its called something DiTech. I think it is an SR50 DiTech but don't quote me. Do a Google search for Aprilia DiTech.
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Kickstart]

Hi

In addition to the above 2, I think there was a Honda 2 stroke off road bike with direct fuel injection.

The Bimota was a bit of a disaster. Still a few around.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[0l0dom0l0]

[Frost]

Yeah the V-due had massive problems, but that aprillia worked well aparently.

https://en.wikipedia.org/wiki/Motus_MST

https://en.wikipedia.org/wiki/Envirofit

[G]

MCN doesn't think so, much that that means.

https://www.motorcyclenews.com/MCN/News/newsresults/New-bikes/2011/March/mar1611-motus-mst-01-is-direct-injection-next-best-thing/

[Kickstart]

Hi

As I understand it the original V Due had major problems even ignoring the fuel injection. The evo versions with carbs also had substantial mechanical changes.

From what I have heard, the V Due fuel injection relied on the fuel striking the piston to attomise it. But this only work when the piston was in the right place compared to the injected fuel, resulting in a fairly narrow power band. Some have been converted to run the fuel injection in a non direct way and this is meant to work quite well.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[0l0dom0l0]

DI in 4 strokes is a fair way off yet too. Although it offers lots of advantages in terms of fuel economy and emissions, the actual system itself has one major floor.

Don't know if you are aware of the problems, but any blow by from the piston rings causes a positive pressure in the crankcase, which is expelled through the crank case breather, taking oil vapour with it. This the condenses on the inlet valves leading to this:

Found it quite interesting doing a project on it actually, surprised its actually used commercially with a problem as big as that ^^
____________________
CBT Passed: 30/08/2009, Theory Passed: 31/08/2010, Mod 1 Passed: 6/9/2010, Mod 2 Passed: 13/09/2010. Restriction ended 13/09/2012.

Bikes: 2007 Derbi GPR 50, 1998 Yamaha Fazer 600 (written off), 2002 Yamaha Fazer 600, 1994 CBR 600F, 2003 Triumph Daytona 600, Kawasaki ZX6R J1.....Current: 2006 Yamaha FZ6, 1998 Suzuki TL1000R and a Honda VFR 400 NC30.

[Kickstart]

Hi

Not sure why direct injection would make that more likely.

Been a fair few direct injection 4 stroke car engines. Think Mitsubishi were the first with one with a modern one on sale in decent quantities.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[0l0dom0l0]

[Kickstart]

Hi

Interesting. That might explain it.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Wozza]

Erm..... Re-route the breather?

[weasley]

The inlet valve issue has been associated with DI ever since it was developed. We (the engine oil industry) are continually working on solutions to reduce/solve it as it is becoming such a widespread technology, especially with closed crankcase breathing and EGR.

Of course diesels have been DI for decades (and even IDI were effectively DI in the respect of valve washing).

Gas-fuelled engines also suffer a similar issue.
____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[GeneralXcepti...]

There's loads of cars with DI. Here's how VW get around the problem with their DI FSI petrol engine:

[Teflon-Mike]

I may be confusing a few different projects here, but some random thoughts that sprung to mind if any use.

1/ ORBITAL - I have a feeling this was project name for a direct injection two stroke, that deliberately 'four-stroked'. It worked on a 'full-fill' principle, so if the throttle was part closed choking fill, it 'hung fire' and waited until there was enough charge in the pot to give a full fill, optimum efficiency burn. Governing the engine by restricting the power strokes rather than the charge in a power stroke. And I have a feeling it was a Honda research piece, but not certain, and sure there was a Yamaha project that was similar.

2/ Indirect-Direct Injection; Circa the same era there was a novel 'exhaust port' injection system, squirting juice into the two stroke exhaust port, on the reverse shock wave of the expansion chamber, just before the port closed. Was supposed to offer all the benefits of direct injection, without the compexity of high pressure injection or in the chamber injection equipment. MAY have been part of the Orbital project.

Norton messed with Injection on the Rotary... did they ever go DI?

Probably all 'old ground' I haven't been following MCN' Scoops' for many many years! But may be some use.
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[Kickstart]

Hi

Orbital was (maybe is) an Australian company that developed some 2 stroke direct injection systems and tried to licence the technology to various other companies. Heard nothing about them doing anything with missing some power strokes.

About 15 years or so ago there was a batch of Ford Fiestas built (not for sale but for testing purposes) using orbital developed 2 stroke engines. They were very clean running but if I remember rightly what put Ford off progressing further was the limited engine life compared to their conventional 4 stroke engines (from memory the life expectancy of the orbital engines as about 50000 miles).

Don't think Norton did anything about direct injection.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing