I stand corrected on that. However , lets be honest , a diesel engine is
really stone age technology.

Or perhaps the shape of things to come as petrol moves to direct injection?
Petrol engines are cheap to make which is why they are used in cars.
Everything else uses diesel.

The only thing it has going for it is fuel
efficiency , thats it.

That is a pretty big "it" and more than reason enough for me to buy diesel.

If petrol engines ever match diesel in that the diesel
engine will vanish as quick as manufacturers can flog off their old models.

But the reverse is happening. Private cars, which were a true bastion of the
petrol engine, are rapidly moving over to diesel. Petrol engines are unlikely
to ever match diesel engines for efficiency unless some magical way is
found to increase the compression ratio without pre-ignition. That is
basic thermodynamics stuff. Of course using direct injection you could raise
the compression because the fuel need not be there until you want it to
go bang. So raise the compression of your petrol engine a fair bit and inject
the fuel at the right time. No need for a spark any more... and you have
a diesel engine

Logical development!

David

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****** David Round - EMail Tel (01248) 382416 *****
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