

| Subject: | Re: Hybrid Engine Conversion |
| From: | Jim Akiba |
| Date: | Thu, 4 Oct 2007 16:33:34 -0400 |
Yeah it would be a big issue. It would certainly be really weird feeling ... but body roll could be kept to almost nothing ha doubt if it's a good idea, but it's fun to think about.. just like the hybrid. Fun to think about, but sadly not really worth doing at the moment. On 10/4/07, Karin Baker & Raymond Paquette <raymondpaquette@gmail.com> wrote: > > Jim > > I've often wondered how about this. Ultimately, you could keep storing > and removing energy from the flywheel as your power needs changed-allowing > ICE to run at a more constant speed. > > Seems like a great idea, but I wonder about the gyroscopic effect. I > think you could end up with some very odd and dangerous struggles with > steering and handling. > > Opinions? > > Raymond > > On 10/4/07, Jim Akiba <syncrolist@bostig.com> wrote: > > > > Seems to me hybrid would not be a good fit for a marine application, > > varying > > rpm, load, and regen braking are where the hybrid is compelling as you > > pointed out. I believe that in our vans(typically lot's of hwy miles) > > the > > total thermal efficiency is going to be low enough that other > > technologies > > will make more sense before current hybrid technology for efficiency. > > For > > me, because I use my 9 pass. as a daily driver, and it's mostly city > > miles, > > it might be great from an efficiency standpoint. From a cost standpoint > > it's > > still really high. There is another even simpler way to have some of > > the > > exact same benefits would mentioned. Good old flywheels. Imagine a > > monster > > flywheel with axis of rotation up/down under the van dead center. It > > would > > be cool because not only could you use it to store, and retrieve energy > > like > > a hybrid system, but it would gyroscopically stabilize the van in the > > correct plane and in theory would be more efficient itself at storing > > mechanical energy because there is no transformation required. Make it > > as > > heavy as one of the hybrid battery packs as large in diameter as > > possible > > with the weight biased to the outside edge, and spin it as fast as > > realistically possible and I wonder what kind of thermal efficiency you > > could reach in city driving. > > > > Jim Akiba > > > > > > > > On 10/4/07, Mark Keller < kelphoto@telus.net> wrote: > > > > > > Hi gang, > > > > > > With the question of making a hybrid a I'm a bit of a neophyte, but In > > > researching a hybrid install for a marine customer I came across a > > > couple of websites that explain to some of us why putting an electric > > > motor on a ICE, internal combustion engine, can actually improve the > > ICE > > > fuel mileage, and in course have beneficial effects on emissions. I've > > > > > summarized it below and included the websites at the bottom > > > > > > The Basic benefiting principle is that ICE are not equally efficient > > at > > > converting fuel to usable work at all RPM ranges. Most efficient is > > at > > > combination of gearing, 75% throttle and RPM. Least efficient at idle > > > and anything less than 75% throttle. Hybrid Engine controllers > > > supplement the ICE with the electrical motor at the less efficient ICE > > > > > RPMs, and recover some of the electrical energy in braking and when at > > > efficient ICE RPMs. > > > > > > The other benefits: ( Inductively thinking is all I have to go on so > > be > > > forewarned). Engine life would be enhanced, since it's overall load > > is > > > reduced by transferring electrical power in demand situations where > > the > > > ICE is not at it's most thermally efficient RPM range. This "power" is > > > partly free, in that the EC, engine controller, recovers electrical > > > energy by charging the batteries, which is a "braking effect" on the > > > vehicle. Brakes on the vehicle last longer, since they see less > > > stopping momentum. You get the idea. > > > > > > The rest of the electrical power comes from two sources. When the > > > engine is at cruise RPM, aka a efficient thermal RPM and the load on > > the > > > engine permits, charging of the batteries takes place. The EC takes > > > care of this "seamlessly". The other charge is the nightly plug in. > > > > > > In my opinion, while none of the above operations occur at ideal rpms > > to > > > the power/generation electric motor, or the ICE, a recognizable > > benefit > > > does occur. I say this because in a true application, the ICE would > > only > > > operate at it's optimum thermal efficient RPM in order to supply the > > > electric motor. This is not completely a windfall though as pound for > > > pound, the electric motor needed to replace the ICE's torque is heavy, > > > > > some 600lbs. Nor is a 50kw electric motor Cheap! > > > > > > Another good thing is that the waterboxer is light at 265lbs and the > > > engine's combustion chamber designe is particular efficient at cruise > > > rpm. Even more so with an updated EC. So in my opinion a pretty > > > competitive application of technology to the waterboxer. > > > > > > In another twist I think that the elusive "more torque" question is > > > solved by the electric motor being there to help get extra boost to > > move > > > the vehicle when needed. This is subtle but the key is that the > > torque > > > boost helps by getting the waterboxer RPMs up to it's power > > range. This > > > is important because the engine is so weak at lower RPMs, I believe we > > > would see a greater benefit than other vehilce/engine combinations. > > > > > > Thanks for listening in > > > > > > Mark > > > In order of relevance > > > Diesel-electric marine propulsion systems and accessories. > > > < > > > http://www.ossapowerlite.com/tech_library/fuel_efficiency/fuel_efficiency.htm > > > > > > > > > KTA Services Inc. < http://www.kta-ev.com/> > > > L.M.C. Manufacturers of Permanent Magnet DC Motors > > > < http://www.lemcoltd.com/performance.htm> > > > Curtis Instruments- Instrumentation, motor speed controllers, battery > > > chargers <http://www.curtisinst.com/> > > > > > > DetectorTechnologies.com - Product Catalog > > > < http://www.detectortechnologies.com/store/SearchResult.aspx?CategoryID=5 > > > > > > > > > ASMO Marine <http://www.asmomarine.com/2005/asmo_uk/00.shtml> > > > taylorproductolinecard-bilingual.pdf (application/pdf Object) > > > <http://www.taylorproducto.ca/taylorproductolinecard-bilingual.pdf> > > > http://www.steamboating.net/ > > > > > > Boat Design Net - the Boat Design and Boat Building Site > > > <http://boatdesign.net/> > > > has a Hybrid forum under the propulsion section. > > > Boat Design Net - the Boat Design and Boat Building Site > > > <http://boatdesign.net/> > > > > > > > > > > > > < http://www.taylorproducto.ca/taylorproductolinecard-bilingual.pdf > > > > <http://www.steamboating.net/> > > > > > > >
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