I'm sure the BMW twin turbo four is the best four cylinder deisel engine in the world and that before long every other manufacturer will be trying to copy it,just like they do the cars.
I am also sure it will be available in everything,probably even a seven series in some markets.
Its cheaper to make than a six,and lighter,you see.
Its just,well,when this engine first became commonish knowledge in the industry,an old chum who works on the oil side rang me and reminded me that this is the very engine we designed over a weekend thirteen years ago,furthermore the only thing not available then was a common rail pump which could produce the necessary pressure,or nobody was admitting it if there was.
If we just look at the somewhat prosaic twin turbo bit,what on earth took them so long?
I mean,we have all been wailing about under 2000 rpm lethargy in deisels for half a century it seems,and the answer has always been to develop the forced induction.
I thought then,and still do that a simple engine driven blower would be best at the lower rpm range,like the VW petrols use.
There is absolutely nothing new here,even the electronics are nothing much,and I'm even unsure about the switching between the blowers,but I can't,of course,get any detail on this!
I freely admit I have it in for car manufacturers,I think they bring most of their problems upon themselves and we pay for the bungling incompetence.
I hope the above explains why I think that.
Robin