[mobike008]

Originally Posted by vishnugs

Again in CRDi itself there are several generations, to my knowledge the order of technology (based on the pump/injection technology) is

Accent CRDi (Older)
Toyota D4D
Verna CRDi
Ford TDCi (Latest Generation)

Verna CRDi is much latest than Ford TDCi, it uses the Variable Geometric Timing

[extreme_torque]

Originally Posted by mobike008

Verna CRDi is much latest than Ford TDCi, it uses the Variable Geometric Timing

errrrrrrr..... the verna has Variable Geometry Turbocharger.

[mobike008]

Originally Posted by extreme_torque

errrrrrrr..... the verna has Variable Geometry Turbocharger.

ooops, i meant that, thanks for correcting E_T. But, i guess timing the post was the problem

[CrAzY dRiVeR]

Originally Posted by mobike008

Verna CRDi is much latest than Ford TDCi, it uses the Variable Geometric Timing

Even i have heard ford TDCi is a generation ahead of Verna CRDi... (Talking of diesel injection tech... Not the type of turbocharger)

[devarshi84]

test drove it today. went absolutely craazy.

I just love that turbo.

[vishnugs]

Originally Posted by mobike008

Verna CRDi is much latest than Ford TDCi, it uses the Variable Geometric Timing

VGT (Variable Geometry Turbo) is the latest turbo charger technology so it does not imply that the engine features the latest generation injection unit.

For example, even Indigo Dicor features VGT, but then you cant claim its the latest generation CRDi offering.

[DCEite]

Yeah guys, Ford TDCi is the latest generation diesel engine this side of 10 lakhs in India.

[vishnugs]

Originally Posted by dceite

Yeah guys, Ford TDCi is the latest generation diesel engine this side of 10 lakhs in India.

With Swift Multijet Diesel as an exception. Multijet Diesel technology is one of the most recent innovations in Diesel. And ofcourse most of the innovations in CRDi is brought by Fiat (Group companies) and Bosch.

Fiat pioneered research and development of common rail direct injection diesel engine or the CRDi. In 1994, Fiat Auto collaborated with Robert Bosch to enhance and complete injection systems for diesel engines.

1988 - First TDI Engine introduced in car - Fiat Croma 1.9TDI
1998 - First CRDi Engine introduced in car - 1.9JTD
2004 - Multijet CRDi - 1.3JTD

Most of the other cars including Merc, Hyundai have licensed the technology either from Fiat group companies or Bosch.

MultiJet uses electronic control to divide the main injection into several smaller ones to achieve quieter combustion, reduced emissions and increased performance. Low weight is a further asset of this engine. This engine was able to win the Best engine award in Europe with other contenders from Honda, Peugeot, Skoda, etc

Multijet engines also use Diesel Particulate Filter (Green Filter - name given by Maruti) Diesel particulate filter - Wikipedia, the free encyclopedia to enhance their efficiency.

So DDSi is one of the latest offering in Diesel technologies even by International Standards

[DCEite]

Hi Vishnugs
You are right, Fiat multijet is one of the latest offerings in Diesel tech.
I was talking about the generation here.

Ford TDCi is a third generation unit, it incorporates a turbo direct common rail system with a two-stage injection process using Piezoelectric injectors and an Accelerometer Pilot Control (APC) that adjusts fuel injection within 0.3 milliseconds for smoother, cleaner and efficient combustion.

So in a nuthshell, Ford TDCi is a third generation common rail unit whereas DDiS/Multijet belongs to second generation of common rail units.

[abhibh]

Originally Posted by dceite

Hi Vishnugs
You are right, Fiat multijet is one of the latest offerings in Diesel tech.
I was talking about the generation here.

Ford TDCi is a third generation unit, it incorporates a turbo direct common rail system with a two-stage injection process using Piezoelectric injectors and an Accelerometer Pilot Control (APC) that adjusts fuel injection within 0.3 milliseconds for smoother, cleaner and efficient combustion.

So in a nuthshell, Ford TDCi is a third generation common rail unit whereas DDiS/Multijet belongs to second generation of common rail units.

Well yes dceite is right. Ford TDCi is a third generation common rail unit but Maruti DDiS uses 5 step multi injection.

[mithun]

What is the service interval for Swift Diesel, is it every 7500 KMS OR 10,000 KMS ?

[nikunj_cal]

What do these terms mean?

1)Varibale Geometric Timimg
2) Varaible Geometric Turbocharger
3)Piezoelectric injectors
4)Accelerometer Pilot Control (APC)

Do the above only come in diesel engines or are in petrol engines too ??

Sorry me a layman but these terms sound quite interesting !!

[mtnrajdeep]

Originally Posted by dceite

Hi Vishnugs
Ford TDCi is a third generation unit, it incorporates a turbo direct common rail system with a two-stage injection process using Piezoelectric injectors and an Accelerometer Pilot Control (APC) that adjusts fuel injection within 0.3 milliseconds for smoother, cleaner and efficient combustion.

I just read in Top Gear's April edition that Renaults second generation 1.5 dCi engine in the logan also uses Accelerometer Pilot Control (APC)!

[vishnugs]

Originally Posted by dceite

Hi Vishnugs
You are right, Fiat multijet is one of the latest offerings in Diesel tech.
I was talking about the generation here.

Ford TDCi is a third generation unit, it incorporates a turbo direct common rail system with a two-stage injection process using Piezoelectric injectors and an Accelerometer Pilot Control (APC) that adjusts fuel injection within 0.3 milliseconds for smoother, cleaner and efficient combustion.

So in a nuthshell, Ford TDCi is a third generation common rail unit whereas DDiS/Multijet belongs to second generation of common rail units.

Decite,

Generation is a confusing term here...Generation I ,II, III and upcoming IV terms were coined by Bosch for identifying its advancement in technology in injection units.

Multijet is an innovation by Fiat which takes 2 stage combustion to 5 stage combustion which gives a lot of advantages like efficiency, less sound, etc. This advancement is unique to Fiat engines whereas all the 3rd generation injection unit is available to all clients of Bosch.

So III Generation doesn't mean its in all ways advanced than Multijet. Yes, Piezoelectric injector based injection control is an advancement, equally powerful in multijet is the 5 stage injection technology.

So injection technology cannot be rated just in the scale of Bosch generation numbers, thats my take.

Other than the injection system,

- TDCi is 2valve/cylinder configuration whereas Multijet is 4 valve/cylinder config.
- TDCi uses Single Overhead Cam architecture whereas Multijet uses DOHC architecture.

[vishnugs]

Originally Posted by mithun

What is the service interval for Swift Diesel, is it every 7500 KMS OR 10,000 KMS ?

The service interval is 10k KMS Mithun.