TDCI or Multijet - Which is technically superior?

WindRide · 4th March 2010, 12:00

With Figo all set to make a big splash with VFM pricing, iam sure a lot of new diesel car customers will have the daunting task of choosing between the TDCI and the plethora of Multijet offerings.

My query to this forum is - Which engine is better, technically? I know an engine does not maketh a car.
Refinement, turbo lag, fuel efficiency, long-term cost of ownership (upkeep), etc can be points of consideration/discussion.

This is not a poll to decide a winner. Just a thread to discuss the relative merits/demerits of these engines from owner's perspective.

Thanks,
WR

Blue Thunder · 4th March 2010, 12:18

Hope you are aware that the TDCi is Ford's name for it's range of Common Rail Turbo diesel engines, while MultiJet is a term used on the Common Rail Turbo diesel engines from FIAT (initially FIAT used the term JTD).

So, both TDCi and MultiJet have something in common in technical terms : they are both Common-Rail Turbo-Diesel engines.

(CRDe is Mahindra's term for the same type of engine, while DICOR is Tata's term and Toyota's is D-4D).

http://en.wikipedia.org/wiki/Common_rail

Therefore, I dont understand the point in trying to compare TDCi and MultiJet, or just TDCi and Multijet ???

Rotorhead · 4th March 2010, 12:33

Quote:

Originally Posted by Blue Thunder

Hope you are aware that the TDCi is Ford's name for it's range of Common Rail Turbo diesel engines, while MultiJet is a term used on the Common Rail Turbo diesel engines from FIAT (initially FIAT used the term JTD).

So, both TDCi and MultiJet have something in common in technical terms : they are both Common-Rail Turbo-Diesel engines.

(CRDe is Mahindra's term for the same type of engine, while DICOR is Tata's term and Toyota's is D-4D).

Common rail - Wikipedia, the free encyclopedia

Therefore, I dont understand the point in trying to compare TDCi and MultiJet, or just TDCi and Multijet ???

Also add the hyundai CrDI to the list .

greenhorn · 4th March 2010, 12:36

I guess he wants to compare the common rail implementations. Given that people have compared even between the various MJD's ( the SWIFT BS III vs Ritz BSIV vs punto/Indica MJD etc), the request sounds reasonable

shantyrocks · 4th March 2010, 13:54

The multijet and the TDci will retyrn almost similar fuel economy figures but the Tdci is devoid of any turbo lag which makes city driving easier compared to the multijet.

The multijet should be easier to maintain though since it is produced in more numbers compared to the tdci and so the spares should be priced lower than the Tdci.

sushantr5 · 4th March 2010, 14:04

Second Generation Ford Ka uses Fiat Multijet Engines rebadged as Duratorque TDCi. This says that Multijet is better compared to Fords own implementation.

Live To Jive · 4th March 2010, 14:07

Though both are Common Rail, the TDCi is a bit older compared to the MJD/JTD/QJD/DDiS.

Guna · 4th March 2010, 14:28

Quote:

Originally Posted by sushantr5

Second Generation Ford Ka uses Fiat Multijet Engines rebadged as Duratorque TDCi. This says that Multijet is better compared to Fords own implementation.

Even the diesels on Fusion/Fiesta are also called Duratorque. Are you sure what they use in Ka is different?

deepakhon · 4th March 2010, 14:39

Quote:

Originally Posted by Guna

Even the diesels on Fusion/Fiesta are also called Duratorque. Are you sure what they use in Ka is different?

Ford Ka uses 1.3 Multijet. I am not sure whether it is so because MJD is better than Duratorque or not, but, as we all know, Ford Ka is a rebadged Fiat 500. It helps to contain the costs if they use the same engine across essentially the same platform.

lloydofcochin · 4th March 2010, 14:40

Quote:

Originally Posted by Guna

Even the diesels on Fusion/Fiesta are also called Duratorque. Are you sure what they use in Ka is different?

Ford Ka - Wikipedia, the free encyclopedia - This link confirms the same.

Daewood · 4th March 2010, 14:42

The multijet in Palio and Indica shudders when idle.
Is it the same case with TDci also?

is it an unavoidable thing in small diesel engines?

rjalihal · 4th March 2010, 15:18

In my opinion, I feel the Multijets are more fuel efficient and a pack more torque than the Ford developed TDCI. Not a guru on diesel engines, but someone please correct me if I am wrong on this one.

DieselFan · 4th March 2010, 15:27

Quote:

Originally Posted by Daewood

The multijet in Palio and Indica shudders when idle.
Is it the same case with TDci also?

is it an unavoidable thing in small diesel engines?

Diesel engine clatter (higher sound emitted compared to Petrol) during idle is true for all Diesel engines irrespective of size or design. It is unavoidable. After a while of owning a Diesel car you would like hearing the same and feel something is missing in a petrol car.

SPARKled · 4th March 2010, 16:02

I guess only the VW group's Pump Deusse or PDI technology is slightly different to the CRDI technology. CRDI being better at insulating noise and vibrations. Experts your views please.

mohandas · 4th March 2010, 16:04

Ford Duratorq: It's from the school of old tech. It is non-inter-cooled 8V SOHC engine.
DDiS (QJD/MJD): It's from the school of new tech. It's inter-cooled 16v DOHC engine.

Technically, DDiS is miles ahead of Duratorq, a engine that comes from Nizam's Era (1998). Duratorq is basically Euro III compaiant engine, and by adding diesel particulate filter, it is made to be EuroIV compaiant. Duratorq is not going to see the EuroV days. That's why ford was compelled to take MJD in their Ford Ka.
Edit:
Just found that ford is selling this engine only in developing countries.

4th March 2010, 12:00	#1
WindRide BHPian Join Date: Nov 2009 Location: Bangalore Posts: 682 Thanked: 479 Times	TDCI or Multijet - Which is technically superior? With Figo all set to make a big splash with VFM pricing, iam sure a lot of new diesel car customers will have the daunting task of choosing between the TDCI and the plethora of Multijet offerings. My query to this forum is - Which engine is better, technically? I know an engine does not maketh a car. Refinement, turbo lag, fuel efficiency, long-term cost of ownership (upkeep), etc can be points of consideration/discussion. This is not a poll to decide a winner. Just a thread to discuss the relative merits/demerits of these engines from owner's perspective. Thanks, WR
	() Thanks

4th March 2010, 12:18	#2
Blue Thunder Senior - BHPian Join Date: Jul 2007 Location: Right here . Posts: 1,657 Thanked: 386 Times View My Garage	Hope you are aware that the TDCi is Ford's name for it's range of Common Rail Turbo diesel engines, while MultiJet is a term used on the Common Rail Turbo diesel engines from FIAT (initially FIAT used the term JTD). So, both TDCi and MultiJet have something in common in technical terms : they are both Common-Rail Turbo-Diesel engines. (CRDe is Mahindra's term for the same type of engine, while DICOR is Tata's term and Toyota's is D-4D). http://en.wikipedia.org/wiki/Common_rail Therefore, I dont understand the point in trying to compare TDCi and MultiJet, or just TDCi and Multijet ??? Last edited by Blue Thunder : 4th March 2010 at 12:23.
	() Thanks

4th March 2010, 12:36	#4
greenhorn Senior - BHPian Join Date: Apr 2007 Location: KL-01 Posts: 7,744 Thanked: 4,387 Times View My Garage	I guess he wants to compare the common rail implementations. Given that people have compared even between the various MJD's ( the SWIFT BS III vs Ritz BSIV vs punto/Indica MJD etc), the request sounds reasonable
	() Thanks

4th March 2010, 13:54	#5
shantyrocks BHPian Join Date: Nov 2007 Location: thane Posts: 741 Thanked: 5 Times	The multijet and the TDci will retyrn almost similar fuel economy figures but the Tdci is devoid of any turbo lag which makes city driving easier compared to the multijet. The multijet should be easier to maintain though since it is produced in more numbers compared to the tdci and so the spares should be priced lower than the Tdci.
	() Thanks

4th March 2010, 14:04	#6
sushantr5 BHPian Join Date: Dec 2008 Location: Nuremberg Posts: 670 Thanked: 582 Times View My Garage	Second Generation Ford Ka uses Fiat Multijet Engines rebadged as Duratorque TDCi. This says that Multijet is better compared to Fords own implementation.
	() Thanks

4th March 2010, 14:07	#7
Live To Jive BANNED Join Date: Jun 2009 Location: Swindon, UK Posts: 698 Thanked: 89 Times	Though both are Common Rail, the TDCi is a bit older compared to the MJD/JTD/QJD/DDiS.
	() Thanks

4th March 2010, 14:42	#11
Daewood BHPian Join Date: Dec 2009 Location: Chennai Posts: 940 Thanked: 233 Times	The multijet in Palio and Indica shudders when idle. Is it the same case with TDci also? is it an unavoidable thing in small diesel engines?
	() Thanks

4th March 2010, 15:18	#12
rjalihal BHPian Join Date: Dec 2008 Location: Bangalore Posts: 713 Thanked: 100 Times	In my opinion, I feel the Multijets are more fuel efficient and a pack more torque than the Ford developed TDCI. Not a guru on diesel engines, but someone please correct me if I am wrong on this one.
	() Thanks

4th March 2010, 16:02	#14
SPARKled Senior - BHPian Join Date: Aug 2009 Location: Navi Mumbai Posts: 1,110 Thanked: 656 Times	I guess only the VW group's Pump Deusse or PDI technology is slightly different to the CRDI technology. CRDI being better at insulating noise and vibrations. Experts your views please.
	() Thanks

4th March 2010, 16:04	#15
mohandas BHPian Join Date: Feb 2008 Location: Hyderabad Posts: 266 Thanked: 27 Times	Ford Duratorq: It's from the school of old tech. It is non-inter-cooled 8V SOHC engine. DDiS (QJD/MJD): It's from the school of new tech. It's inter-cooled 16v DOHC engine. Technically, DDiS is miles ahead of Duratorq, a engine that comes from Nizam's Era (1998). Duratorq is basically Euro III compaiant engine, and by adding diesel particulate filter, it is made to be EuroIV compaiant. Duratorq is not going to see the EuroV days. That's why ford was compelled to take MJD in their Ford Ka. Edit: Just found that ford is selling this engine only in developing countries. Last edited by mohandas : 4th March 2010 at 16:09. Reason: some more info.
	(1) Thanks