German Car Forum

Yperion · 10-13-2005, 02:05 AM

VW will be changing all it's diesels to adopt the common rail system starting from 2007. Right now VW uses in the TDI engines a direct fuel injection system (TDI=Turbo Direct Injection).

Article (in German): http://www.spiegel.de/auto/werkstatt...379240,00.html

Snake Vargas · 10-13-2005, 02:49 AM

Yannis, can you tell me about VW's diesels?

What's better, TDI direct injection, or common rail? And what's with this Pumpe Duse thing I hear about? What does it relate to?

For what it's worth, I thought most other makers already have common rail diesels.

Yperion · 10-13-2005, 03:19 AM

Common rail diesels have smoother operation and are more environmental friendly right now apparently. TDIs on the other hand were the first engines of all manufacturers to reach Euro 4 emission limits which gave them a significant advantage in some markets (eg. Germany, UK) cause euro 4 diesels had reduced taxes.
Since VW right now uses both systems (Direct injection mainly in smaller engines, common rail in larger) i believe that they want to adopt one standard to cut production and R&D costs.

vw12 · 11-01-2005, 04:34 PM

Quote:

Volkswagen's Pumpe-Düse diesel technology, hailed as a revolutionary technology when it was introduced in 1998, will be abandoned when the company starts producing a new range of diesel engines in 2007. The PD system was intended to make diesels more powerful, more efficient and quieter, but it no longer has a technological benefit over common-rail technology and is also more expensive to produce. Furthermore, it is proving to be very difficult to adapt PD to work with particulate filters, which are required to meet future EU emission regulations.

Volkswagen already uses common-rail on its six- and eight-cylinder diesels, and will do the same for the new generation of three- and four-cylinder units. With this in mind, it now seems strange that Volkswagen and Siemens VDO Automotive opened a €240 million joint venture plant specifically to produce PD injectors, but sources say that it could be used to produce other parts - perhaps including common-rail system components.

http://vwgazette.blogspot.com/2005/1...pumpe-dse.html

10-13-2005, 02:05 AM	#1
Yperion Jetsetter Moderator Emeritus Join Date: Sep 2005 AKA: Yannis Location: Greece Garage: 2008 Nissan X-Trail Posts: 9,158 Thanks: 2,744 Thanked 2,401 Times in 1,376 Posts	Volkswagen is switching to common-rail diesels. VW will be changing all it's diesels to adopt the common rail system starting from 2007. Right now VW uses in the TDI engines a direct fuel injection system (TDI=Turbo Direct Injection). Article (in German): http://www.spiegel.de/auto/werkstatt...379240,00.html __________________ Why are we afraid of tomorrow when today is all we have?

10-13-2005, 02:49 AM	#2
Snake Vargas Fanatic Join Date: Sep 2005 Location: Sydney, NSW, Australia Posts: 1,201 Thanks: 0 Thanked 5 Times in 5 Posts	Re: Volkswagen is switching to common-rail diesels. Yannis, can you tell me about VW's diesels? What's better, TDI direct injection, or common rail? And what's with this Pumpe Duse thing I hear about? What does it relate to? For what it's worth, I thought most other makers already have common rail diesels.

10-13-2005, 03:19 AM	#3
Yperion Jetsetter Moderator Emeritus Join Date: Sep 2005 AKA: Yannis Location: Greece Garage: 2008 Nissan X-Trail Posts: 9,158 Thanks: 2,744 Thanked 2,401 Times in 1,376 Posts	Re: Volkswagen is switching to common-rail diesels. Common rail diesels have smoother operation and are more environmental friendly right now apparently. TDIs on the other hand were the first engines of all manufacturers to reach Euro 4 emission limits which gave them a significant advantage in some markets (eg. Germany, UK) cause euro 4 diesels had reduced taxes. Since VW right now uses both systems (Direct injection mainly in smaller engines, common rail in larger) i believe that they want to adopt one standard to cut production and R&D costs. __________________ Why are we afraid of tomorrow when today is all we have?

German Car Forum

Volkswagen is switching to common-rail diesels.