"Dave Plowman (News)" wrote
DavidR wrote:

In principle is there any reason, other than the technical difficulty in
implementation, why a petrol engine couldn't have a fuel demand valve
connected to the pedal with the engine management determining the
necessary throttle setting?

Because petrol can only burn satisfactorily within a small range of
fuel/air ratio.

That doesn't answer the question.

Not the same thing.

Diesel requires excess air. LB requires excess air.

The wherewithal to allow diesel to burn when injected is always present -
the air within the cylinders is compressed to a point where the heat from
this will ignite the injected fuel. Petrol engines don't and can't work
like this.

You're only describing the difference in method of ignition.