Japaneses Diesel cars running on New Zealand Diesel?

[Hemi]

SCR is the way of the future . that and DPF .

egr can seriously go bang itself with a rake .

was reading an article about the next gen of fuel injectors . they wont have a solid tap type deal but rather a liquid metal that cnahges shape with magnetic/ electrical current and can open and close many time faster and more accuratly then the current items .

will be sweet to get 0-1000cc injectors that will happily run onver that entire range .

[RUNAMUCK]

Speaking of injectors, I heard on the national program an interview with a kiwi doing research at some texan university. They'd developed a hydrogen injector that could squirt a load so fast that it could deliver enough for a combustion event in the time it took for 5 degrees of crank rotatation at 5000rpms. Thats most impressive! The upshot being the fuel could be added so close to tdc that an engine could run like 20:1 compression, but not pre-ignite. Not really relevant to this thread, but the above post reminded me about it.

[Yammies]

if injector pumps are being damaged by diesel, then it is either bypassing the filters, or the filtration media is too coarse. If your vehicle filter is rated for the engine as an OEM part should be, then you should not have any problems. aftermarket filters such as Ryco or similar may resemble the original part in every way except for filtration level, and may in fact be allowing crap through, causing the problem.

The clearances on the new HPCR injectors are down in the 2 - 3 micron range. You will not remove particles of this size effectivly with a paper celulose filter element. All of the OEM's are well aware of the issues with these new tier 4 engines and are busy writing disclaimers about the fuel going into the tank. Basically the filters often fitted by the OEM will remove particulate but they are limted therefore the fuel going into the vehicle needs to be very "clean" and the onboard filters will handle the last step. For what ever reason, toyotas seem to have been hit the hardest by this. IMO there is nothing wrong with our diesel fuel supply but we typically have poor dispencing systems ie. old storage tanks.

I understand dispensers are now running down to 3 microns at the point of use. Oil companies don't like paying out for repairs so they are pretty hot on upgrading the filters. Less than three microns is almost at the point of requiring closed circuit refuelling as on aircraft. it's the only way you can avoid airborne dust contaminating fuel.

[andy]

Typically the oil companies have covered themselves by not owning any assets. ie. you buy your fuel from "Z" not Shell etc so you have no come back on the oil company itself. That said the oil companies filter the fuel at the refinery but cant control the cleanliness of the fuel once it leaves their site as they dont own the tankers. One of the difficult things with the fuel filtration is that it is a single pass application and therefore you only have one shot at catching the contamination. For this reason you need to be asking your filtration supplier about the Beta ratio of their elements. Look for at least a ratio of 200 +. If you are ever unfortunate enough to have a suspected HPCR diesel engine failure, take a sample of the fuel and have it lab tested (ISO 4406 patch test) as this is going to be your best form of defense. Last I heard Toyota were fitting an optional Racor filter to all new HPCR diesels.

[Borgweiser]

egr can seriously go bang itself with a rake .

Hell yes to that, seen Mercedes engines in passenger cars with blocked intake manifolds due to this..

[CaMpylobacter]

I thought the tanker ships weere owned by the people that owned marsden point. i.e: the fuel companies.

the tank farms usually have oil company branding too.

the tankers are usually owned by a third party, however the underground storage tanks at servos are rarely owned by the servo owner.... they'r owned by: you guessed it, the oil companies.

I've heard a secondhand yarn that a fuel tanker truck had it's delivery valve jammed. they offloaded the whole truck, took the hose off and found a piece of driftwood jamming the valve. this would have entered when they added the 'seawater plug' for want of a better term, which is essentially, when they're done pumping their load of one fuel off the boat, they add x amount of seawater to the pipeline from the boat, along the DG wharf and down to the tank farm, then start pumping the next fuel. adds another realm of contamination, huh? All to save money on pipelines: instead of running 3 or 4, they just run a couple and use seawater plugs to seperate different fuels and oils being pumped through them.

Paperwork for filtration is one of the hardest things to get. You can buy filters from the company that supplys the O.E.M, but they rarely will release the specs aside from measurements. Some of these factories are fairly haggard, too, although the quality of their filters seems equivalent to more high end factories. amazing.

O.E.M will rarely release the specs of their filters either, though. They can lean back on the whole 'oh it's genuine parts, therefore the right spec' excuse, though. (car manufacturers don't actually make the filters, so 'genuine parts' is often just a certain brand in a toytoa/mitsi/holden labelled box... actually, you'd be surprised how little of a vehicle is actually made in a car factory, but that's another story)