Seeing how a piston moves up and down.

The announcer is extremely irritating and the explanations were as bad ......but Boy !!! that 4 in line was a work of art and the transparent head was fascinating ...... I knew it swirled in the combustion chamber but is was smashing to actually see it.

If u wanna see real interesting stuff with pistons..well I think thats what I saw you wanna go on the Waverley paddle steamer...I stood watching the innards working...fab.

The video was very good.

Genuine question, why would the speed of a diesel flame be slower that that of a petrol one?

That makes sense. Thanks.

I used to work for texaco, so I know when diesel goes up it does go up. As we found out when buncefield went up although that was 60,000,000 gallons there.

Buncefield explosion was amazing. I was moored at Rickmansworth and there was this boom as if someone had rammed into the side of the boat. I leapt out of bed and looked around. Nothing happening so I opened the side doors. No moving boats - some other boaters looking out of side doors..

Heard later there had been a large explosion at an oil depot near Hemel which was a few miles away.

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Also and probably more important because  all the fuel is in the cylinder at the point of ignition in a petrol engine (Possible exception  of direct gasoline injection) where as a diesel only has a fraction of fuel in the cylinder at that point because injection takes a small time. It is probably even more so with electronic injections that supplies a pilot injection, pauses or a split second for the pilot fuel to ignite, and the injects the bulk of the fuel. (there has been attempts at mechanical pilot injection but not on the sort of engines common on inland boats).

Basically you can not ignite diesel by a flame or spark unless it is pre-heated so it is vaporising or you use a wick. I have not read a detailed report about Buncfield but I would suspect a fire heated a storage tank, the liquid inside heated and expanded until the tank ruptured. That would have produced a cloud of hot atomised fuel that the fire then ignited. I suspect the actual bang was a result of the body of atomised fuel igniting much like the diesel knock we suffer and it was still not an actual explosion but close enough to make little difference.

Never mind about all the money!  Never mind about pollution or global warming!  What prat was responsible for this?  No wonder petrol costs so much these days!!

"There is evidence suggesting that a high-level switch, which should have detected that the tank was full and shut off the supply, failed to operate. The switch failure should have triggered an alarm, but it too appears to have failed" - who made that switch, and who manufactured that alarm?

Fox's verdict: piss poor manufacture, piss poor maintenance, piss poor supervision. Relying on electronics and mechanics to do everything. And everyone's talking about driverless cars??!!

en.wikipedia.org/wiki/Buncefield_fire