Re: Euro diesel reaches the UStotallydeadmailbox@yahoo.co.uk (The Older Gentleman) writes:
> Timo Geusch <tnewsSPAMMENOT@unixconsult.co.uk> wrote:
>
>> *cough* Golf I Diesel. AFAIK that was the first small capacity diesel
>> (although it may only have been the first one that was a 'converted'
>> petrol engine.
>>
>> Dunno if you got that in the UK as early as we did, but wikipedia.de
>> suggests that we got it in '76. From memory, a mate of mine was tooling
>> around in a '77 Diesel when we were at school.
>
> Could be. I don't think we would have got it that early. I remember that
> France was building small diesels in the late 1970s. France has
> certainly got more experience of making them than VW, I reckon, because
> the home market was so big. Still is, of course.
Yes and no - Mercedes has been putting Diesel engines into cars since
the 30s (as, actually, has Peugeot) and millions of taxi drivers and
farmers bought the things. But that was pretty much the target market
and efforts of selling Diesels to civilians pretty much failed (like
diesel-converted BL Farinas in the sixties). Diesel engines only started
appearing in small cars like the Golf in the '70s as a direct response
to the early '70s oil shock and both Peugeot (well, PSA), Renault and VW
developed them in their respective home markets. Oddly enough, the
Japanese manufacturers missed that boat initially as they preferred to
develop cleaner petrol engines...
>> > Moving onto bikes, I would *love* to see a small turbodiesel engine
>> > developed for a touring bike. Something maybe 1.2-1.4 litres,
>> > producing perhaps 80-90bhp but with oodles of torque and the fuel
>> > consumption of a 250cc bike, so giving a 350-400 mile range. Diesel
>> > engines tend to look a bit of a plumber's nightmare, but hidden under
>> > bodywork it shouldn't matter.
>>
>> The looks are one problem, but I think the added weight due to the
>> strengthened engine components and the high-pressure system for the
>> Diesel injection pump with associated gubbins may be a bigger issue.
>
> Yes, I wondered about that. It would be heavier. As for the injection, a
> disel pump is heftier than petrol, and I *think* a bigger battery would
> be a good idea, but with a CD diesel there's not that much more plumbing
> than on a modern computerised spark ignition engine.
You'll definitely need a bigger battery to crank the engine due to the
higher CR ratio. You can probably control the injection with an ECU
these days as per petrol engine, so you can do away with the unwieldy
pump in an awkward space. But in order to reap the benefits, you'd
probably want to stick a turbo on the engine as well and that might lead
to space issues again.
>> > Years ago, BMW was rumoured to be considering a diesel version of the
>> > K fours. I once tackled a BMW suit about it, but he denied they'd ever
>> > done any work on it. I think I read somewhere that Honda is working on
>> > a large diesel engined bike.
>>
>> Supercharged?
>>
>> <ducks>
>
> Naughty boy. Actually, does anyone make supercharged (as opposed to
> turbocharged) diesels?
I'm not 100% sure and I don't have the time to dig through a stack of
magazines here, but I vaguely recall that some of the two-stroke diesels
(no, that's not a joke) back in the 30s and 50s used them.
A quick google found me a press release for a Daihatsu Kei-car with a
660cc Diesel twin which has both a compressor and a turbo, so it can be
done.
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