VR6 engine
| Volkswagen VR5 engine | |
|---|---|
| Overview | |
| Manufacturer | Volkswagen |
| Also called | 2.3 V5 |
| Production | 2000-2005 |
| Combustion chamber | |
| Configuration | VR5 |
| Displacement | 2,324 cc (141.8 cu in) |
| Cylinder bore | 81.0mm |
| Piston stroke | 90.2mm |
| Valvetrain | DOHC/2 valves per cylinder/4 valves per cylinder |
| Compression ratio | 10.8:1 |
| Combustion | |
| Fuel system | multipoint indirect injection |
| Fuel type | petrol |
| Output | |
| Power output | 150–170 PS (110–130 kW; 150–170 hp) |
| Torque output | 209–220 N·m (154–162 lb·ft) |
| Chronology | |
| Predecessor | - |
| Successor | - |
| Volkswagen VR6 engine | |
|---|---|
| Overview | |
| Manufacturer | Volkswagen |
| Also called | 2.8 V6 |
| Production | 1991-2005 |
| Combustion chamber | |
| Configuration | VR6 |
| Displacement | 2,792 cc (170.4 cu in) |
| Cylinder bore | 81.0mm |
| Piston stroke | 90.3mm |
| Valvetrain | DOHC/4 valves per cylinder |
| Combustion | |
| Fuel system | multipoint indirect injection |
| Fuel type | petrol |
| Output | |
| Power output | 140–204 PS (103–150 kW; 138–201 hp) |
| Torque output | 235–265 N·m (173–195 lb·ft) |
| Chronology | |
| Predecessor | - |
| Successor | - |
| Volkswagen VR6 engine | |
|---|---|
| Overview | |
| Manufacturer | Volkswagen |
| Also called | 2.9 V6 |
| Production | 1994-1997 |
| Combustion chamber | |
| Configuration | VR6 |
| Displacement | 2,861 cc (174.6 cu in) |
| Cylinder bore | 82.0mm |
| Piston stroke | 90.3mm |
| Valvetrain | DOHC/2 valves per cylinder |
| Combustion | |
| Fuel system | multipoint injection |
| Fuel type | petrol |
| Output | |
| Power output | 184–190 PS (135–140 kW; 181–187 hp) |
| Torque output | 245 N·m (181 lb·ft) |
| Chronology | |
| Predecessor | - |
| Successor | - |
| Volkswagen VR6 engine | |
|---|---|
| Overview | |
| Manufacturer | Volkswagen |
| Also called | 3.2 V6 |
| Production | 2003- |
| Combustion chamber | |
| Configuration | VR6 |
| Displacement | 3,189 cc (194.6 cu in) |
| Cylinder bore | 84.0mm/86.0mm |
| Piston stroke | 95.9mm/90.9mm |
| Valvetrain | DOHC/4 valves per cylinder |
| Compression ratio | 11.3:1 |
| Combustion | |
| Fuel system | multipoint indirect injection/FSI commonrail direct injection |
| Fuel type | petrol |
| Output | |
| Power output | 235–250 PS (173–184 kW; 232–247 hp) |
| Torque output | 315–320 N·m (232–236 lb·ft) |
| Chronology | |
| Predecessor | - |
| Successor | - |
| Volkswagen VR6 engine | |
|---|---|
| Overview | |
| Manufacturer | Volkswagen |
| Also called | 3.6 FSI |
| Production | 2005- |
| Combustion chamber | |
| Configuration | VR6 |
| Displacement | 3,598 cc (219.6 cu in) |
| Cylinder bore | 89.0 mm |
| Piston stroke | 96.4 mm |
| Valvetrain | DOHC/4 valves per cylinder |
| Compression ratio | 12.0:1 |
| Combustion | |
| Fuel system | FSI commonrail direct injection |
| Fuel type | petrol |
| Output | |
| Power output | 260–300 PS (190–220 kW; 260–300 hp) |
| Torque output | 350 N·m (260 lb·ft) |
| Chronology | |
| Predecessor | - |
| Successor | - |
Volkswagen's VR6 engines, and the later VR5 variants, are a family of internal combustion engines, characterised by a narrow-angle (10.5° or 15°) V engine configuration. Developed by the manufacturer in the late 1980s, evolutions of these engines are still produced by them.
When containing six cylinders, a VR-engine's cylinder block consists of two cylinder banks (left: 1-3-5; right: 2-4-6) while there is only a single cylinder head covering both rows of cylinders.
The name VR6 comes from a combination of V engine (German: V-Motor), and the German word "Reihenmotor" (meaning "inline engine" or "straight engine") - and so is described as a "Vee-Inline engine" (VR-Motor). It shares a common cylinder head for the two offset banks of cylinders. It has a specific sound that is unique and different than either inline or "V" engines. The engine is currently in use in a variety of VW models, one such example is the Volkswagen Passat NMS.
This engine configuration was also adopted for the Horex VR6 Motorbike.
The Volkswagen VR6 was specifically designed for transverse engine installations in front-wheel drive vehicles. The narrow angle of 15° between the two 'rows' in the VR6 engine is a more compact size than a wider angle V6 design. This made it possible for Volkswagen to install six-cylinder engines in existing four-cylinder cars. The wider configuration of a wider angle V6 engine would have required an extensive redesign of the vehicles to enlarge the engine compartment. The VR6 is also able to use the firing order of a straight-six engine.
The narrow angle between cylinders allows the use of just one cylinder head - whereas wider angle Vee engines require two separate cylinder heads, one for each cylinder bank. The VR6 arrangement needs two overhead camshafts to drive all the valves, regardless of whether the engine has two valves per cylinder, or four per cylinder. This simplifies engine construction and reduces costs. In early VR6 engines with 12 valves (two per cylinder) two overhead camshafts were used. The forward camshaft (in the transversely mounted engine) has six cam lobes to control the three intake and three exhaust valves of the front cylinder bank, without using rockers. The rear camshaft is designed the same way, but controls the rear cylinder bank. The operating principle of this design is comparable to a single overhead camshaft (SOHC) design with intake and exhaust valves of one bank driven by one camshaft. The later VR6 engine designs with 24 valves (four per cylinder) had two overhead camshafts as well, however with a slight change of operation principle: In the 24 valve engine all intake valves are operated by the front camshaft (with the aid of rockers), while all the exhaust valves are operated by the rear camshaft (again with rockers). This operating principle is more akin to a double overhead camshaft (DOHC) design, with one camshaft for intake valves, and one for exhaust valves.
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Wikipedia