www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You

Order your TDIClub merchandise and help support TDIClub


Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI News/Tech

TDI News/Tech This Forum is for the posting of TDI news related items.

Reply
 
Thread Tools
Old August 11th, 2011, 09:42   #1
TDIMeister
Phd of TDIClub Enthusiast
Moderator at Large
 
TDIMeister's Avatar
 
Join Date: May 1999
Location: Canada
TDI(s): TDI
Default V12 TDI might live on in Bentleys

Durheimer Says V12 Diesel Is 'Good Enough for Bentley'


Quote:
So what’s changed? Well, the former chief Frank-Josef Paefgen has been replaced by Wolfgang Durheimer, and the new top brass says the next diesel engines are “good enough for Bentleys”. He also says Bentley should become the VW Group's centre for the future development of 12-cylinder engines.
Excellent.
__________________

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

Are you receiving unwelcome sales solicitations or inappropriate, harassing messages in your PM? You can report them by pressing the image on the top right of the message in a similar way as reporting inappropriate posts.
TDIMeister is offline   Reply With Quote
Old August 13th, 2011, 11:38   #2
pleopard
Veteran Member
 
pleopard's Avatar
 
Join Date: Apr 2006
Location: Calgary, Alberta
Default

In large part thanks to CR fuel systems, piezo injectors, and DPFs. Thank you Siemens and Bosch!

http://www.greencarcongress.com/2005...s_and_bos.html

- and even more precise injectors are on the way http://www.conti-online.com/generato...spreis_en.html
__________________
'10 Jetta 2.0 TDI, DSG
pleopard is offline   Reply With Quote
Old August 13th, 2011, 16:57   #3
TDIMeister
Phd of TDIClub Enthusiast
Moderator at Large
 
TDIMeister's Avatar
 
Join Date: May 1999
Location: Canada
TDI(s): TDI
Default

Cylinder deactivation would be a perfect complementing technology.
__________________

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

Are you receiving unwelcome sales solicitations or inappropriate, harassing messages in your PM? You can report them by pressing the image on the top right of the message in a similar way as reporting inappropriate posts.
TDIMeister is offline   Reply With Quote
Old August 13th, 2011, 17:12   #4
pleopard
Veteran Member
 
pleopard's Avatar
 
Join Date: Apr 2006
Location: Calgary, Alberta
Default

in a 4 cylinder TDI?
__________________
'10 Jetta 2.0 TDI, DSG
pleopard is offline   Reply With Quote
Old August 13th, 2011, 17:15   #5
TDIMeister
Phd of TDIClub Enthusiast
Moderator at Large
 
TDIMeister's Avatar
 
Join Date: May 1999
Location: Canada
TDI(s): TDI
Default

Last I created this thread, it was about the V12.
__________________

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

Are you receiving unwelcome sales solicitations or inappropriate, harassing messages in your PM? You can report them by pressing the image on the top right of the message in a similar way as reporting inappropriate posts.
TDIMeister is offline   Reply With Quote
Old August 13th, 2011, 17:29   #6
pleopard
Veteran Member
 
pleopard's Avatar
 
Join Date: Apr 2006
Location: Calgary, Alberta
Default

Yes, you created it. Sorry for being a jokester.
__________________
'10 Jetta 2.0 TDI, DSG
pleopard is offline   Reply With Quote
Old August 16th, 2011, 01:04   #7
wolfskin
Veteran Member
 
wolfskin's Avatar
 
Join Date: Apr 2008
Location: Timisoara/Romania
Default

Quote:
Originally Posted by pleopard View Post
In large part thanks to CR fuel systems, piezo injectors, and DPFs. Thank you Siemens and Bosch!
Ahem, Continental, since a few years. We're not supposed to speak that name anymore, y'now.

To the point, I'm not sure about a diesel Continental (the car model, now), but the Mulsanne could definetely use that monster torque. That thing's a cruiseship of a car, and even the low rumbling of a big TDI would suit it well.
wolfskin is offline   Reply With Quote
Old August 16th, 2011, 01:12   #8
wolfskin
Veteran Member
 
wolfskin's Avatar
 
Join Date: Apr 2008
Location: Timisoara/Romania
Default

Quote:
Originally Posted by TDIMeister View Post
Cylinder deactivation would be a perfect complementing technology.
I'm told they do that already in the Mulsanne's engine (petrol V8).

So if they fit a diesel, they might want to keep that catchy marketing line.
wolfskin is offline   Reply With Quote
Old August 16th, 2011, 13:38   #9
TDIMeister
Phd of TDIClub Enthusiast
Moderator at Large
 
TDIMeister's Avatar
 
Join Date: May 1999
Location: Canada
TDI(s): TDI
Default

Cylinder deactivation benefits Diesels in ways that are different than petrol ones. A conventional petrol engine running at low loads has the throttle almost closed, incurring a great deal of pumping losses. Diesels don't (conventionally) have throttles, so pumping losses at low load are not such an issue and therefore there's little to be gained there. However, with half the cylinders disabled, those remaining cylinders that are firing operate at higher load. Some savings can be achieved by having more beneficial conditions for aftertreatment (higher EGT, higher EGR tolerance, less exhaust oxygen content), which result in requiring less frequent active DPF regeneration cycles (better fuel efficiency) and lower AdBlue consumption for the SCR.
__________________

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

Are you receiving unwelcome sales solicitations or inappropriate, harassing messages in your PM? You can report them by pressing the image on the top right of the message in a similar way as reporting inappropriate posts.
TDIMeister is offline   Reply With Quote
Old August 17th, 2011, 06:41   #10
MonsterTDI09
TDIClub Enthusiast
Veteran Member
 
MonsterTDI09's Avatar
 
Join Date: Jul 2009
Location: NoVa/NJ
Default

Quote:
Originally Posted by TDIMeister View Post
Cylinder deactivation benefits Diesels in ways that are different than petrol ones. A conventional petrol engine running at low loads has the throttle almost closed, incurring a great deal of pumping losses. Diesels don't (conventionally) have throttles, so pumping losses at low load are not such an issue and therefore there's little to be gained there. However, with half the cylinders disabled, those remaining cylinders that are firing operate at higher load. Some savings can be achieved by having more beneficial conditions for aftertreatment (higher EGT, higher EGR tolerance, less exhaust oxygen content), which result in requiring less frequent active DPF regeneration cycles (better fuel efficiency) and lower AdBlue consumption for the SCR.

Does the CR already have a type cylinder deactivation? Where It monitors the compression and temp then it adjust how much and when to inject fuel into each cylinder?
__________________
2010 Jetta sedan TDI DSG Platinum gray metallic.Build date (5/10) Mods ----EV skid plate, E code head lamps, Polar FIS
A cleaning service for DPF. http://www.dpfregeneration.com/ I have no affiliation
MonsterTDI09 is offline   Reply With Quote
Old August 17th, 2011, 07:48   #11
TDIMeister
Phd of TDIClub Enthusiast
Moderator at Large
 
TDIMeister's Avatar
 
Join Date: May 1999
Location: Canada
TDI(s): TDI
Default

Quote:
Originally Posted by MonsterTDI09 View Post
Does the CR already have a type cylinder deactivation? Where It monitors the compression and temp then it adjust how much and when to inject fuel into each cylinder?
As described above, this is not cylinder deactivation. It can be readily realized with the CR injection system, but to get the full benefits, cylinder deactivation must include a valvetrain that will keep all the valves of the deactivated cylinders completely closed throughout the cycle.
__________________

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

Are you receiving unwelcome sales solicitations or inappropriate, harassing messages in your PM? You can report them by pressing the image on the top right of the message in a similar way as reporting inappropriate posts.
TDIMeister is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
V12 tdi???? JaivH Audi SUVs (Q7 & Q5) and other V6 TDIs 12 July 11th, 2011 20:30
Which turbo in the V12 tdi? ErlingK TDI Power Enhancements 9 February 1st, 2010 11:28
FS: Bentleys for 2005 Golf TDI and Others nforkvw Private TDI Items for Sale/Wanted 0 December 16th, 2008 10:42
V12 Tdi Silver Star Quebec 14 November 16th, 2006 10:01
3 Bentleys for Passat TDI available brownnugen Private TDI Items for Sale/Wanted 1 July 10th, 2001 06:36


All times are GMT -7. The time now is 08:57.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
© 1996 - 2020, All Rights Reserved
Page generated in 0.16495 seconds with 12 queries
[Output: 109.00 Kb. compressed to 92.51 Kb. by saving 16.49 Kb. (15.13%)]