Date: Tue, 06 May 2003 16:17:57 +0200 From: Nel Frikandel <nelfrikandelnopsamail.com> Subject: Re: How is the MPG measured/estimated
On Tue, 6 May 2003 11:50:56 GMT, hohnopsamlid.invalid (Goran Larsson) >Perhaps the LPG conversion hardware generates fake "injector open" >signals to the EDU? As a matter of fact, part of the LPG system is a thingy called an injection emulator, it's a cigarette box sized plastic box, mounted under the hood/bonnet, with "Pitagora, emulatore injezzione 4 cyl" printed on it. It is supposed to emulate the signals returning from the petrol injectors, which are switched off electronically when running on LPG... So that's the trick then... >Does the fuel consumption as displayed by the >EDU make any sense at all in LPG mode? Yep, makes perfect sense. > How is fuel consumption in >a LPG car shown? l/100km, mpg, mm^2? As shown by the trip computer, so MPG or L/100km. No difference between LPG or petrol in that matter. >Does a shown consumption of >10 l/100km correspond to a consumption of 10 l of liquid gas each >100 km? I don't measure that exactly. I get 280 to 300Km's out of a full tank of +/-40 liters. The trip computer says 11 to 14 L per 100KM. >DI is "Direct Ignition" and the DI cassette is the red (on Trionic 5 >cars like the 9000) or black (on Trionic 7 cars like the 9-5) "thing" >that sits directly above the spark plugs in the engine head. The >cassette contains the electronics needed to fire the spark plugs and >also use the spark plugs as sensors to sense the state of the combustion. O.K., that's the ret "hat" that is mounted on the valve-head then, saying (in my case) 2.0 injection. I thought that was just a fashionable thingy replacing the spark-wires, but there's more to them then...
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