W engine

Presentation on W 12 Engine

1. PRESENTATION ON W-12 ENGINE

2. CONTENTS :- Abstract Introduction W stands for Working principle Types of Engines Inline engine V engine VR engine Modular design W 12 Engine Components W 12 Engine Specifications Advantages Conclusions References

3. ABSTRACT With the rising demands of power , better performance & fuel economy in automobile vehicles, engineers do many research & finally they got success in the form of a new breed of engines known as ‘ W Engines’. One of the first W engines was a three-cylinder (W3), built by Anzani in 1906 to be used in motorcycle. The 1917 Napier Lion aircraft engine was an early W12 engine. The W engines set exacting demand on design. Large numbers of cylinders were adapted to extremely compact dimensions of the engine. In this process , more attention was paid to lightweight design.

4. INTRODUCTION A W 12 Engine is a twelve cylinder piston internal combustion engine in a W configuration. W 12 engine have been manufactured in the two distinct configurations. Two compact engines from the VR series are combined to produce a W engine. The result is a series of compact gasoline engines ranging from the W8 to the W16. The original w 12 configuration used three banks of four cylinders coupled to a common crankshaft with 60 deg angles between the banks. The W engines set exacting demands on design. Large numbers of cylinders were adapted to the extremely compact dimensions of the engine. In the process , more attention was paid to lightweight design . As with the V engines, the cylinders are distributed to two banks. In the W8 and W12 engines, these banks of cylinders are aligned at a V-angle of 72 degrees in relation to one another. As in the VR engine, the cylinders within each bank maintain a V-angle of 15 degrees

5. W STANDS FOR - With the aim of building even more compact engines with a large number of cylinders , the design features of the V and VR engines were combined to produce the W engines. When the W engine is viewed from the front , the cylinder arrangement looks like a double-V. Put the two Vs of the right and left cylinder banks together, and you get a W. This is how the name “W engine” came about.

6. The engines of the W family are a combination of two “VR banks” based on a modular design principle. The cylinders of one bank have an angle of 15 degrees relative to each other while the two VR banks are arranged at a V-angle of 72 degrees. WORKING PRINCIPLE

7. TYPES OF ENGINES :- Inline Engines. V Engines. VR Engines.

8. 1) INLINE ENGINE It represents the earliest development level in engine configuration. The cylinders are arranged in-line vertically above the crankshaft.

9. 2) V - ENGINE To make engines shorter, the cylinders in the V engines are arranged at an angle in between 60 degrees and 120 degrees, with the Centerlines of the cylinders intersecting with the centerline of the crankshaft.

10. 3) VR - ENGINE The need for a powerful alternative suitable for transverse mounting for use in small to mid-size vehicles saw the development of the VR engine. Six cylinders, offset at a V-angle of 15 degrees, are accommodated in a fairly slender and very short engine block . Unlike previous designs, the engine only has one cylinder head. This made it possible to supply the Golf with a compact VR6 engine.

11. MODULAR DESIGN Two compact engines from the VR series are combined to produce a W engine. The result is a series of compact gasoline. E ngines ranging from W8 to W16 . In the evolution of the 6-cylinder engine, the VR6 engine stands out due to its compactness. It is much shorter than the comparable inline engine, and narrower than V engine. Combining two VR6 engines with a cylinder angle of 72 degrees produces a W12 engine.

12. W-12 ENGINE COMPONENTS :- Cylinder block Crankcase lower section with bearing support Crankshaft with connecting rods and pistons Balancing shafts Engine — Mechanics Cylinder heads Oil sump and oil pump Crankshaft drive Timing chain drive Belt drive for auxiliary components Multi-part intake manifold

13. W-12 ENGINE SPECIFICATIONS:- Displacement - 366 cu in (5998 cm3) Bore - 3.307 in (84.0 mm) Stroke - 3.550 in (90.168 mm) Number of cylinders - 12 Number of cylinder heads - 2 V-angle of cylinder heads between banks - 72 degrees V-angle of cylinders in a bank - 15 degrees Number of valves - 4 per cylinder Firing order - 1-12-5-8-3-10-6-7-2-11-4-9

14. Dimensions - 20.2 in (513 mm) long. 28.0 in (710 mm) wide. 28.1 in (715 mm) height. Weight Approximately - 541 lbs. (245 kg ). Maximum power output - Approximately 420 bhp (309 kW ). Maximum torque - Approximately 406 lbs-ft (550 Nm ) . Fuel type recommendation - Premium unleaded gasoline (91 AKI ). Installation position - In-line.

15. ADVANTAGES :- W is shorter than V. It can be set further back in the car to balance weight distribution. Easy in manufacturing and development. It also makes all the cars it equips very different from the competition making it more unique.

16. CONCLUSION W Engine with their successful story created a new era of powerful & efficient engines with better fuel economy. From 1906 to present there is a constant increase in power and performance of W engines. We have a very good example of Volkswagen which is the only car manufacturer in the world, currently producing W engines. It is working in this field since 1998 and produced many W engines e.g. W8, W12 and then W16. W16 engine is currently the most powerful Engine in the world which when installed in Bugatti Veyron gives running speed of 432kph. So as centuries goes on people’s demand for supercars also increases which led many automobile companies to do research and produce more powerful engine.

17. REFERENCES " Department of Energy, Annual Energy Review 2003," DOE/EIA-0384, 2004, Energy Information Administration (EIA), Washington, D.C. Krivts , I. L., and Krejnin, G. V., Pneumatic Actuating Systems for Automatic Equipment : Structure and Design, CRC/Taylor & Francis, Boca Raton 2006. Fronczak , F. J., and Beachley, N. H. "An Integrated Hydraulic Drive Train System for Automobiles," Fluid Power, R. Heron, ed., Elsevier Applied Science, London, 1988, pp. 199-215 .

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