Hi all,
I know that no Xantia came with a fuel consumption computer but that several Peugeots with the same engines came with them such that they could be retrofitted to a Xantia.
Does anyone know if the ES9J4 in the V6 supported outputs for a fuel consumption computer and whether that was used in a Peugeot 406 V6 ? If so what does the display look like and would it be hard to retrofit ?
Just thinking pie in the sky again...
Xantia V6 fuel consumption readout ?
Moderator: RichardW
Xantia V6 fuel consumption readout ?
Simon
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
Re: Xantia V6 fuel consumption readout ?
well it exists on the s2 xm with the es9 engine so the ecu can certainly do it
2006 C5 HDi 170
1998 Xantia Activa S1
1971 D Special
2006 C3 1.6 HDi SX,
1998 Xantia Activa S1
1971 D Special
2006 C3 1.6 HDi SX,
A 1/3 of Team WFA 'Clarkson'CitroJim wrote: I'm a pink fairy
Re: Xantia V6 fuel consumption readout ?
How do these fuel consumption meters work anyway ? Does the engine ECU calculate fuel usage purely on injection times, making the assumption that the injectors are all working fine to known properties and that the fuel pressure is properly regulated ? Or are they a bit smarter ?
(Fuel rail pressure, battery voltage, injector cleanliness all affect quantity of injected fuel for a given injection time - the ECU knows the battery voltage but can only presume the fuel rail pressure and healthy injector function)
(Fuel rail pressure, battery voltage, injector cleanliness all affect quantity of injected fuel for a given injection time - the ECU knows the battery voltage but can only presume the fuel rail pressure and healthy injector function)
Simon
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
Re: Xantia V6 fuel consumption readout ?
http://www.frenchcarforum.co.uk/forum/v ... p?p=165616" onclick="window.open(this.href);return false;
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99 silver 2.1td exclusive xantia
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99 red 2.0 hdi exclusive xantia..
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08 black C4 GP 2.0hdi vtr
Re: Xantia V6 fuel consumption readout ?
http://www.frenchcarforum.co.uk/forum/v ... =39257&sta" onclick="window.open(this.href);return false;
99 silver 2.1td exclusive xantia
99 red 2.0 hdi exclusive xantia..
00 black 2.0 hdi exclusive xantia
99 blue 2.0 hdi exclusive xantia
06 silver 1.6 hdi vtr c5
57 blue C4 GP 1.6hdi exclusive
08 black C4 GP 2.0hdi vtr
99 red 2.0 hdi exclusive xantia..
00 black 2.0 hdi exclusive xantia
99 blue 2.0 hdi exclusive xantia
06 silver 1.6 hdi vtr c5
57 blue C4 GP 1.6hdi exclusive
08 black C4 GP 2.0hdi vtr
- xantia_v6
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1997 Citroen Xantia V6 (France)
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2011 Peugeot 308 CC THP 155 (NZ)
1975 Jaguar XJ-S pre-HE (NZ) - x 835
Re: Xantia V6 fuel consumption readout ?
I fitted one to my last Mk1 V6. The ECU certainly supports it, but there is no wire to the pin on the ECU.
Most of the necessary connections are found on the back of the instrument panel, but the ECU wire needs to be run to the ECU.
I used a 406 D8 display, an XM display would probably work, but the range calculation would be less accurate as the XM has a bigger tank. The 406 display has much faster updates of instantaneous consumption than the XM.
On a mk2 Xantia, you could fit a mk1 indicator switch and use the extra horn button to control the trip computer function.
The fuel consumption is just calculated from injector pulse width, but seems to be surprisingly accurate in most cases.
Most of the necessary connections are found on the back of the instrument panel, but the ECU wire needs to be run to the ECU.
I used a 406 D8 display, an XM display would probably work, but the range calculation would be less accurate as the XM has a bigger tank. The 406 display has much faster updates of instantaneous consumption than the XM.
On a mk2 Xantia, you could fit a mk1 indicator switch and use the extra horn button to control the trip computer function.
The fuel consumption is just calculated from injector pulse width, but seems to be surprisingly accurate in most cases.
- xantia_v6
- Forum Admin Team
- Posts: 9091
- Joined: 09 Nov 2005, 22:03
- Location: France or NewZealand
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1997 Citroen Xantia V6 (France)
1999 Citroen XM V6 ES9 (France)
2011 Peugeot 308 CC THP 155 (NZ)
1975 Jaguar XJ-S pre-HE (NZ) - x 835
Re: Xantia V6 fuel consumption readout ?
The ECU takes injector size, flow rate and number of cylinders into account and provides a pulse equivalent to millilitres of fuel used, so the same computer can be used regardless of engine type. The trip computer has the fuel tank size hard-coded for estimating remaining range.
Injector flow rates have to be pretty well matched to get good emissions performance, and fuel consumption is driven by the average, so the trip computer should get more accurate with more cylinders. Rail pressure Relative to manifold is an assumed variable.
Injector flow rates have to be pretty well matched to get good emissions performance, and fuel consumption is driven by the average, so the trip computer should get more accurate with more cylinders. Rail pressure Relative to manifold is an assumed variable.