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Date: Fri, 30 Apr 1999 09:10:47 +0100
From: ghbnopsamity.co.uk (Hugh Browton)
Subject: Re: trip computer


In article <7g7vm9$uin$1nopsam1.dejanews.com>, sfreundnopsamejanews.com wrote: >Subject: trip computer >I just bought a '90 9000 CD Turbo, and the trip computer mileage indicator >drives me a little bit crazy. I can understand how it goes below 20 miles an >hour when you are accelerating, what I don't understand is why it goes up to >80 or 90 when you take your foot off of the accelerator. Is this supposed to >be happening. My understanding is that on the over-run (or coasting) (ie you are not accelerating or even using the engine to maintain forward speed against wind, rolling and other frictions) the fuel supply is cut off to the engine so that in fact the car is (at that time) travelling at infinity miles to the gallon. So, if you could just arrange for all your trips to start at the top of a hill, and finish at the bottom, you would use very little petrol. Physics and the world being what they are, I find that every downslope on the outward journey is matched by an upslope on the way home (or vice versa!) and so I continue to use o non-infinitesimal amount of petrol. Pity! Hugh Browton ('87 9000 SE T)

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