Do You Ever Think Why Luxury Automobiles Uses     V – 12 Engine

 

The first V-Engine was built by Daimler in 1889 and after that V8 and V12 were designed in 1903 and 1904 respectively. The purpose to design V – configuration was to use it in racing boats but now V-engines are at heart of luxury cars, racing boats and aircrafts. The V – configured was chosen due to its balanced nature and smooth delivery of power. V-12 engine consist of 12 cylinders with two banks of six cylinders in V – configuration at v – angle 60 deg. Each bank of six cylinders is in straight line. At any given time three cylinders are in power stroke which results in smooth delivery of power and it also eliminates gap between power pulses. V12 engines are usually longer than V8 and V6 engines which make it difficult to fit in passenger car but length is not a typical problem in commercial vehicles. Technical specifications of a V-12 Engine vary as per the usage of the engine. Here the standard specifications are provided for a V- shaped marine engine and an automobile engine. It is only for knowledge and it should not be generalized.

 

Engine Block

 

 

Automobile Engine:

Parameters	Range/Specs
Engine	Light-alloy V12, cylinder angle of 60°, crank shaft running in eight friction bearings.
Bore/stroke	92/100 mm; light-alloy pistons
Displacement	7922 cm3
Compression ratio	1 : 6.3
Output	200 hp at 3200 rpm
Cylinders	12 cylinders, replaceable grey-cast iron liners

 

Marine Diesel Engine:

Parameters	Range/Specs
Rated power	1471 kW
Speed	2300 rpm
Bore/Stroke	28/157 mm
Displacement	24 ltr.
Rated Torque	7107 Nm
Compression Ratio	17:1
Lowest Fuel Consumption	199 g/kW
Mean piston speed	12.04 m/s

 

One can see from the tech specs that the parameters are different for the automobile engine and a marine engine for comparison. Company’s and manufactures have some specific requirement which depends on usage of the engine.

 

Applications of V-12 Engine

The major applications of V-12 engines are in racing cars, light aircrafts, marines and boats. During the WWII, the use of V-12 engines in aircrafts was at peak but the advancement of jet engines later dominates the reign on V-12 engines. 

 

Engine Head

 

 

The Main Components of the engine:

Piston: Piston is one of the main parts in the engine. Its purpose is to transfer force from Expanding gas in the cylinder to the crankshaft via a connecting rod.

 

Piston Ring: A ring groove is a recessed area located around the perimeter of the piston that is used to retain a piston ring. Ring lands are the two parallel surfaces of the ring groove which function as the sealing surface for the piston ring. A piston ring is an expandable split ring used to provide a seal between the piston and the cylinder wall.

 

Connecting Rod: The connecting rod is a major link inside of a combustion engine. It connects the Piston to the crankshaft and is responsible for transferring power from the piston to the crankshaft and sending it to the transmission. There are different types of material sand production methods used in the creation of connecting rods. The most common types of connecting rods are steel and aluminum. The most common type of manufacturing processes is casting, forging and powdered metallurgy.

 

Crankshaft: The crankshaft is the part of an engine which translates reciprocating linear piston motion into rotation. To convert the reciprocating motion into rotation, the crank shaft has crankpins, additional bearing surfaces whose axis is offset from that of the crank, to which the “big ends” of the connecting rod from each cylinder attach.

 

Camshaft: Camshaft is frequently called “brain” of the engine. This is so because its job is to open and closed at just the right time during engine rotation, so that the maximum power and efficient cleanout of exhaust to be obtained. The camshaft drives the distributor to electrically synchronize spark ignition. Camshafts do their work through eccentric "lobes" that actuate the components of the valve train. The camshaft itself is forged from one piece of steel, on which the lobes are ground.