JTD engine

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JTD/JTDm engine
Manufacturer Fiat Group/General Motors
Maruti Udyog DDiS
Also called: CDTi (Opel)
TiD/TTiD (Saab)
DDiS (Suzuki)
D (Cadillac)
Production: 1997–present
Displacement: 1.3 L 1248 cc
1.9 L 1910 cc
2.4 L 2387 cc
Block alloy: cast-iron
Head alloy: aluminium alloy
Power output: 51 kW (70 PS) -154 kW (210 PS)

JTD (uniJet Turbo Diesel) is Fiat Group's term for its current common rail turbodiesel engine range. The MultiJet name is used in the second generation common rail units. Most of the Fiat, Alfa Romeo and Lancia range has JTD engines. Ownership of the Fiat JTD design is shared with General Motors as part of a settlement of the failed merger between the two auto conglomerates. GM Powertrain Europe group in Turin, Italy manages their interest in these engines.

Contents

A small 1.3 L (1248 cc) version (called the SDE, Small Diesel Engine) is produced in Bielsko-Biala, Poland. The Multijet 75 PS version was chosen in 2005 as the International Engine of the Year in the 1-litre to 1.4-litre category.

There are three versions of this engine: a 70 PS (69 hp/51 kW), a 75 PS (74 hp/55 kW) (used in the Fiat Punto, Panda, Palio / Albea, Fiat Idea, Opel Corsa / Combo, Opel Meriva and Suzuki Swift) and a variable inlet geometry 90 PS (89 hp/66 kW) (used in the new Fiat Grande Punto, Fiat Linea, Opel Corsa and Opel Astra). At the time of the launch this was the smallest four-cylinder diesel engine available and has a fuel consumption of 72 mpg (3.3 L/100 km) in some applications. The engine is able to meet Euro IV pollution standards without the use of a diesel particulate filter.

applications:

A 1.6 L version of the engine, with a maximum power output of 120 PS (118 hp/88 kW) was announced for 2006.[1] The new 1.6 JTD diesel will be released before the end of 2007, it comes in two power levels 105 PS and 120 PS.[2]

The most common JTD engine is the 1.9 L (1910 cc) straight-4 found in the Fiat Punto, Doblò, Stilo and Croma. It produces 80 PS (79 hp/59 kW) and reaches 36 mpg (6.6 L/100 km) in city driving. The first car that used this engine was Alfa Romeo 156 in 1997 (105 PS (104 hp/77 kW)), making it the world's first common rail diesel passenger car. In 1999 it was introduced with the Fiat Punto and Fiat Brava/Fiat Bravo/Fiat Marea. The engine block weighs approximately 125 kg. Most common model found is the 115 PS model as fitted to the Stilo.

The Multijet second generation common rail has three versions. The 8-valve version has 120 PS and 130 PS with variable inlet geometry; and the 16 valve version has 150 PS, that can be found on the Croma.

Opel also uses a version of this engine. Their CDTi engine, manufactured in Pratola Serra, Italy and Kaiserslautern, Germany, is the product of the half-decade joint venture between GM and Fiat.

It is used in the Vectra, Signum, Astra, Zafira, Cadillac BLS and Suzuki SX4 as well as some Saabs marked as TiD. There are three versions of this engine, a 150 PS/320 Nm (148 hp/110 kW), 120 PS (118 hp/88 kW), and 100 PS (99 hp/74 kW).

Fiat Powertrain Technologies has released information about new twin stage turbo (twin turbo) version of this engine, there are coming two versions of this engine first one is producing 180 PS (178 hp/132 kW) and second one 190 PS (187 hp/140 kW), both have a maximum torque output of 400 N·m (295 ft·lbf) at 2000 rpm (300 N·m (221 ft·lbf) at 1250 rpm). Start of production is forecast July 2007 (180 PS version). The engine weighs approximately 185 kg. This engine will be sold both to Fiat Group Automobiles and other brands, but the 190 PS version is reserved only to Fiat Group Automobiles.[3]

applications:

The 2.4 L (2387 cc) straight-5 version is based on the 2.4 126 PS (124 hp/93 kW) 5 cylinder TD engine as used in the Mk1 Fiat Marea. The JTD version benefits from the solid build of the TD block, and an improved head/injection system. There are 2 versions of the 2.4JTD, the 10-valve as used in the Fiat Marea 130JTD and the earlier Alfa Romeo 156 diesels where it was available as 136 PS (134 hp/100 kW),140 PS (138 hp/103 kW), 150 PS (148 hp/110 kW) and later a 20-valve version 175 PS (173 hp/129 kW) as used in the later (2003>) Alfa Romeo 156 as well as some Lancia vehicles. It was designed for transverse front-wheel drive use and was deemed too long and tall for widespread use in other GM or Fiat products. The multijet variant of this engine, capable for 200 PS (197 hp/147 kW), is currently used in the Alfa Romeo 159, Alfa Romeo Brera and Fiat Croma. The latest version of this engine produces 210 PS (207 hp/154 kW) and 400 N·m (295 ft·lbf) at 1500 rpm, and is used in Alfa Romeo vehicles.[4]

applications:

  1. ^ News 13.12.2004. italiaspeed.com. Retrieved on 2007-06-09.
  2. ^ 27.09.2007 THE NEW FIAT BRAVO HAS ALREADY HIT ITS FULL YEAR SALES TARGETS. italiaspeed.com... Retrieved on 2007-10-09.
  3. ^ Press release:NEW ENGINE 1.9 JTD TWIN STAGE TURBO. fptpowertrain.com. Retrieved on 2007-06-08.
  4. ^ Alfa Romeo at the 77th Geneva International Motor Show 2007. fiatautopress.com. Retrieved on 2007-06-09.

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