JTD engine
| JTD/MultiJet engine | |
|---|---|
| Overview | |
| Manufacturer | |
| Also called | Family B engine |
| Production | 1997–present |
| Combustion chamber | |
| Cylinder block alloy | Cast iron |
| Cylinder head alloy | Aluminium alloy |
| Combustion | |
| Fuel type | Diesel |
| Oil system | Wet sump |
| Cooling system | Water cooled |
| 0.8 L | |
|---|---|
| Overview | |
| Manufacturer | Maruti Suzuki |
| Also called | DDiS 125 |
| Production | 2015-present |
| Combustion chamber | |
| Configuration | I2 |
| Displacement | 793 cc (48.4 cu in) |
| Output | |
| Power output | 34 kW; 47 PS (46 bhp) |
| Torque output | 125 newton metres (92 lb·ft) |
| 1.0 L | |
|---|---|
| Overview | |
| Manufacturer | General Motors |
| Also called |
|
| Production | 2011–present |
| Combustion chamber | |
| Configuration | I3 |
| Displacement | 936 cc (57.1 cu in) |
| Cylinder bore | 69.615 mm (2.74 in) |
| Piston stroke | 82.0 mm (3.23 in) |
| Valvetrain | DOHC with roller finger followers |
| Compression ratio | 16.8:1 |
| Combustion | |
| Fuel system | Common rail |
| Output | |
| Power output | 43 kW; 57 hp (57 bhp) |
| Torque output | 150 N·m (111 lb·ft) |
| Dimensions | |
| Length | 553.3 mm (21.78 in) |
| Width | 547.3 mm (21.55 in) |
| Height | 700.5 mm (27.58 in) |
| Dry weight | 130 kg (287 lb) |
| 1.3 L | |
|---|---|
| Overview | |
| Manufacturer | Fiat/General Motors |
| Also called | |
| Production | 2003–present |
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 1,248 cc (76.2 cu in) |
| Cylinder bore | 69.6 mm (2.74 in) |
| Piston stroke | 82.0 mm (3.23 in) |
| Valvetrain | Dual overhead camshafts |
| Compression ratio | 17.6:1 |
| Dimensions | |
| Dry weight | 140 kg (310 lb) |
| 1.6 L | |
|---|---|
| Overview | |
| Also called | Multijet (Fiat) |
| Production | 2006–present |
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 1,598 cc (97.5 cu in) |
| Cylinder bore | 79.5 mm (3.13 in) |
| Piston stroke | 80.5 mm (3.17 in) |
| 1.9 L | |
|---|---|
JTDm engine cover of Alfa Romeo 159
|
|
| Overview | |
| Manufacturer | Fiat/GM |
| Also called |
|
| Production | 1997–present |
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 1,910 cc (117 cu in) |
| Cylinder bore | 82 mm (3.2 in) |
| Piston stroke | 90.4 mm (3.56 in) |
| Dimensions | |
| Dry weight | 125 kg (276 lb) (Single Turbo) |
| 2.0 L | |
|---|---|
JTDm 2 engine cover of Alfa Romeo Giulietta
|
|
| Overview | |
| Manufacturer | |
| Also called | |
| Production | 2008–present |
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 1,956 cc (119.4 cu in) |
| Cylinder bore | 83 mm (3.3 in) |
| Piston stroke | 90.4 mm (3.56 in) |
| Cylinder block alloy | Cast iron |
| Cylinder head alloy | Aluminum |
| Valvetrain | Dual overhead camshafts |
| Compression ratio | 16.5 |
| Combustion | |
| Fuel system | Direct injection |
| Fuel type | |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 110–192 hp (82–143 kW) |
| Torque output | 192–280 lb·ft (260–380 N·m) |
| Dimensions | |
| Dry weight | 174–182 kg (384–401 lb) |
| 2.2 L | |
|---|---|
| Overview | |
| Manufacturer | Fiat (Pratola Serra plant) |
| Also called |
|
| Production | 2015-current |
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 2,184 cc (133.3 cu in) |
| Cylinder bore | 83.8 mm (3.30 in) |
| Piston stroke | 99 mm (3.9 in) |
| Cylinder block alloy | Cast iron |
| Cylinder head alloy | Aluminum |
| Valvetrain | Dual overhead camshafts |
| Compression ratio | 15.5:1 |
| Combustion | |
| Turbocharger | Variable-geometry integrated in the exhaust manifold |
| Fuel system | Common Rail |
| Management | Multijet II (Magneti Marelli) |
| Output | |
| Power output | 185–210 PS (136–154 kW; 182–207 hp) |
| Torque output | 440 N·m (320 lb·ft) |
| 2.4 L | |
|---|---|
Engine cover of Alfa Romeo 166 2.4 JTD
|
|
| Overview | |
| Manufacturer | Fiat/GM |
| Also called |
|
| Combustion chamber | |
| Configuration | I5 |
| Displacement | 2,387 cc (145.7 cu in) |
| Cylinder bore | 82 mm |
| Piston stroke | 90.4 mm |
| Cylinder block alloy | Cast iron |
| Valvetrain | OHC |
| Compression ratio | 18,5 |
| Combustion | |
| Fuel system | Direct injection |
| 2.3 L | |
|---|---|
| Overview | |
| Also called |
|
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 2,287 cc (139.6 cu in) |
Multijet is Fiat Chrysler Automobiles' term for its current common rail direct injection turbodiesel engine range. Most of the Fiat, Alfa Romeo, Lancia range as well as certain Chrysler, RAM Trucks, Jeep and Maserati vehicles have Multijet engines. Ownership of some Fiat Multijet designs is shared with General Motors as part of a settlement of the failed merger between the two auto conglomerates. GM Powertrain Torino group in Turin, Italy manages their interest in these engines. Some PSA Peugeot Citroën diesel engines are also rebadged JTD units, and vice versa. The first-generation of Fiat's common rail diesel engine was known as JTD, an initialism of uniJet Turbo Diesel.
The property that distinguishes the Multijet from previous generations of common rail diesel engines from FCA is the combustion of the fuel, which is split into multiple injections, thus allowing for a more complete, quieter combustion in the cylinder. Compared to the first-generation JTD engines which only featured a smaller pilot and a larger main injection, Multijet is capable of up to five injections per combustion cycle which enables better, more efficient cold running, better performance especially in the lower rev-range, quieter operation as well as even lower consumptions and emissions. The time between injections has been reduced to 150 microseconds while the minimal injection quantity has been reduced from two to less than one microlitre.
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Wikipedia