Citroen Xsara Picasso 1.6hdi 92 hp 2008 edc16c34

by **scoppack** » Thu Oct 09, 2014 3:35 pm

Zac: I had a thought before (it hurt!), but if you have a 92hp, with the non-garrett, I don't think you have VNT
and presumably you don't have a DPF?

by **Zaccyboy** » Thu Oct 09, 2014 3:38 pm

I have the Mitsubishi turbo...............Don't know if it has vnt to be honest? or if it is mechanically operated???

Thanks

by **scoppack** » Thu Oct 09, 2014 3:51 pm

I do think its mechanical

by **scoppack** » Thu Oct 09, 2014 3:53 pm

From WiKi

The 1.6 L (1,560 cc) Diesel is part of the DV/DLD family and is, depending application, called the DV6 (PSA), W16 (MINI) or DLD-416 (Ford). 90 PS and 110 PS versions are available. Though both intercooled, the major difference being that the 90 PS has a conventional waste-gated Mitsubishi MHI TD025 turbo charger, whilst the 110 PS uses a Garret GT15V variable geometry (VNT) turbocharger. The 110 PS version of this engine can be ordered in an unprecedented variety of car models, representing either side of the motoring spectrum, ranging from the MINI Cooper D to the Volvo S80 1.6D DRIVe. From 2011 PSA start to develop (1,598 cc) diesel with BMW/Mini

by **sparco** » Thu Oct 09, 2014 5:01 pm

scoppack wrote:The only map I know of is the lambda one.
I tried lowering the IQ in the lower region, so it may limit the amount injected, but it either didn't work as it did at the upper end or it made it struggle with lack of power (I've fiddled with too much I don't remember)

lower the IQ, the AFR is increased, and the actual lambda value is increased. Lambda 1.17 (I think) is 17:1 AFR, so .9 would be maybe 14:1 AFR (rich), and 1.3 is lean.

But someone pointed out before that it shouldn't rely on the lambda/smoke/IQ limit as it will lag/backpressure.

The threads I'm following at the moment are, this one, EGR effects, and the JTd economy.

on the edc15 people tend to run the car on the torque limiter and keep the smoke map a bit higher...
but on our edc16 its virtualy impossible to do so as the torque limiter has not got a fixed IQ value, tho you could interpolate the Nm to IQ map to find out the exact allow IQ at any given RPM...
brought my lambda down to 14-14-15-15-16-16-17-17etc afrs from 700mg/stroke and 1000rpm upwards... off course it smoked like this so Just play around till it doesnt smoke any more than youblile it too after that...