Regarding Biodiesel: what would happen if you took the 200 - 350°C fraction from a petroleum distillation column and put it in your diesel engine? Pretty much what you described about biodiesel and veggie oil. It takes many stages of modification to get it the controlled level it is at the pumps - each diesel from each producer is different, too - sure they might have similar numbers (e.g. cetane) attributed to them, but they tell you very little about the actual constituents.
I assume the problem with biodiesel vs. valves is due to the acidic components? It's these oxygen containing components that make it so potent, and they can be easily removed (as they are with petrochem diesel). Blending will not eliminate the problem (only slow it), unless it's an exhaust temperature issue, in which case it's either slow burning or contains the wrong balance of constituents - both relatively easily remedied during production.
The esterification of veggie oil into biodiesel is what causes the acidification, unfortunately. Pure veggie oil doesn't eat engine parts, but then there's that nasty gelling problem. Veggie oil is great... but to spread the use of it, we'll need to find an alternative to those piezo-injectors. Maybe a dual-injector set-up, a la Nissan... with two lower pressured injectors in place of the single ultra-high pressure direct unit.
Oh... and they'll have to remove that pesky emissions requirement that induces some manufacturers to add after-ignition injection to clear out the particulate traps... which is what causes a lot of the oil dilution and running problems in more modern systems running bio and veggie diesel.
Keep an open mind, and don't let the bitter experiences of the present cloud the potential for the future (solar, nuclear, wind etc. power all suffer this type of prejudice - I can't say if it's (un)just, though.)
I've driven straight veggie oil, I've hypermiled a Prius to 80 mpg, my family owns an electric, I am experimenting with methane (hoping to have a vehicle kit by the end of the year), and have a propane-powered car. I think my mind is pretty open. But, as a long-time tuner, I have to look at these developments with an eye towards practicality and market realities.
There's no prejudice to say that large solar installations are still too expensive, unprofitable and erratic. Or that hydropower sucks in the middle of a drought. (just ask me)... or that gasoline alternatives (even LPG, which I'm an advocate of) have their challenges. It's just an admission of how far we still have to go to remove the word "petroleum" from our everyday vocabulary.
Biodiesel is the future, and it will improve - especially once the process settles down and matures and a more sensible feedstock is used (i.e. a waste product: landfill, water treatment etc.)
It's part of the future. How big a part depends on where it comes from. Waste veggie oil and veggie oil diesel will help ease our needs for "fossil" oil... but cannot completely replace it. And newer diesels will have to be built with them in mind (no biggie... we redesigned for unleaded gasoline, too).
Landfill oil is the pot of gold at the end of the rainbow. Small scale installations (farm-based and home-based) are cost-effective, but big ones are still problematic. Digesters require weeks of storage... which means that commercial scale production tanks will require lots of land space. And there's the nasty explosion risk. I'm looking at building a backyard set-up, which will be fun. (Just don't let my wife know about the explosion risk, please.

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Oil alternatives often require compromises. Some of which consumers are unwilling to make (electrics are ostensibly "here", with the Nissan Leaf finally bringing the pricing down to semi-realistic levels... but people still want more range)... and some of which governments and manufacturers are unwilling to make:
*Propane (LPG) and methane (CNG, biogas) would work very well in a car designed only to be fueled on them... and such a car would not cost much more than a comparable gasoline car... a difference of hundreds of dollars, rather than the several thousand dollar difference of hybrids and the ten thousand or more dollar difference of electrics. But despite the huge fleet market for these vehicles, manufacturers were slow to respond.
*Government doesn't like veggie oil. They can't tax it.
Same for hybrid drivetrains (I don't necessarily mean "hybrid" as seen on the roads today, it could be anything). They will improve, and they are the future - whether you like it or not. Hence, as they improve, they will become advantageous from a performance standpoint as much as an economy standpoint. "Nobody's" doing it yet, but that doesn't mean research isn't going on.
Nobody's doing it for pure performance, because it's not there. They're doing it for marketing. Just because, say, LeMans is being won by diesels, it doesn't mean diesel is "here" (and I'm a huge fan of modern diesels)... it just means that within the scope of marketing, the LeMans organizers see it as profitable to allow diesels to keep the advantage of having nearly twice the displacement of their gasoline counterparts and more sophisticated turbo systems.
Again: KERS: Teams won't use it if it's not forced... because there
is no net performance benefit to losing a few seconds every lap due to the weight just to be faster a few seconds in just one area every lap.
Perhaps not for GT5, maybe GT6; GT7? We don't know, but it's coming. I think Kaz knows this...
Once again, do not let the industry direct your opinions of what is hybrid and what is not. The
definition of the word hybrid indicates that an electrically driven supercharger counts as a hybrid system. Of course, as with any marketing term, a degree of prowess with metaphor is required.
I don't. I form my own opinions from research and experience with said alternatives (which I've a lot of).
Nope, it isn't. The e-charger doesn't directly or indirectly power the car, so it doesn't count as a separate motor. otherwise, you'd have to count turbochargers (pressure powered... just like hydraulic KERS) and superchargers (mechanically powered) as hybrid motors. An e-charger is a supercharger. Period. The only difference is that between the motor and the turbine, they've added another energy conversion step, from mechanical to electric... in essence, it's a supercharger on demand.
And while it does provide boost, it's pitiful compared to a conventional turbo in terms of total boost capacity. Boost requires horsepower to make... 25 hp worth (whether in terms of exhaust gas pressure or parasitic losses via the supercharger pully) for a good charger. The most successful commercial e-charger so far still only has about 15 hp, and only makes several psi of boost... for a short period of time. Think of it more as rechargeable nitrous than a full-time turbo kit.