Laaksonen kirjoitti:-Onko 350d:n ja 400d:n tehoerolla selityksenä, että 286 hv-versiossa on 1 turbo ja 340 hv-versiossa 2

Minä ymmärrän tuon lehdistötiedotteen niin, että siellä on kaksivaiheinen turboahto molemmissa tehoversioissa.
Eli tämä osa:
"Even though it has noticeably more power than its predecessor, the new engine consumes over seven percent less fuel. The special traits of the top-of-the-line engine in the diesel family include the stepped-bowl combustion process, two-stage turbocharging and for the first time the use of CAMTRONIC variable valve-lift control. Its design features a combination of aluminium engine block and steel pistons as well as further improved NANOSLIDE® coating of the cylinder walls."
http://media.daimler.com/marsMediaSite/ ... PTU!&rs=41" onclick="window.open(this.href);return false;
koskee OM 656(OM 656 DE 30 LA) moottorin molempia tehoversioita.
kaksivaiheinen turboahto voi itseasiassa sisältää jopa kolme erillistä turboahdinta:
https://www.youtube.com/watch?v=l0vp9HGuNZo" onclick="window.open(this.href);return false;
Sequential two-stage turbocharging
Basically speaking, sequential two-stage turbocharging
operates in the same way as
sequential single-stage turbocharging. However,
instead of an individual turbocharger in each
case, a pair of turbochargers is added or
disconnected as required.
Regulated two-stage turbocharging
In the case of regulated two-stage turbocharging, two
turbochargers are connected in series. In the system
configuration employed by MTU, the exhaust flow from the
cylinders is split so that part of it passes through the
high-pressure (HP) turbine and the rest is diverted through a
bypass by a controllable wastegate valve. The entire mass
flow then flows through the low-pressure turbine (LP).
https://www.mtu-online.com/fileadmin/fm ... g_2014.pdf" onclick="window.open(this.href);return false;