>>Lamborghini V10

Lamborghini V10

Lamborghini V10

The Lamborghini V10 engine in a Lamborghini Gallardo
Manufacturer	Audi Hungaria Motor Kft. & Automobili Lamborghini S.p.A.
Production	2003-present
Configuration	90° V10 petrol engine
Displacement	4,961 cc (302.7 cu in), 5,204 cc (317.6 cu in)
Cylinder bore	5.0 L: 82.5 mm (3.25 in), 5.2 L: 84.5 mm (3.33 in)
Piston stroke	92.8 mm (3.65 in)
Cylinder block alloy	Cast aluminium alloy
Cylinder headalloy	Cast aluminium alloy
Valvetrain	4-valves per cylinder, 2x double overhead camshaft(2xDOHC - 'quad cam')
Compression ratio	5.0 L: 11.5:1 5.2 L: 12.5:1
Fuel system	5.0 L: Electronic multi-point sequential fuel injection 5.2 L: Electronic multi-point Fuel Stratified Injection
Fuel type	Petrol/Gasoline
Oil system	Dry sump
Cooling system	Water cooled
Power output	5.0 L: 368–390 kW (500–530 PS; 493–523 bhp) 5.2 L: 412 kW (560 PS; 553 bhp) @ 8,000 rpm
Specific power	5.2 L: 79.2 kW (107.7 PS; 106.2 bhp) per litre
Torqueoutput	5.0 L: 510 N·m (376 lbf·ft) 5.2 L: 540 N·m (398 lbf·ft) @ 6,500 rpm

The Lamborghini V10 is a ninety degree (90°) V10 petrol engine which was developed for the Lamborghini Gallardo automobile, first sold in 2003.

Developed by AUDI AG, for use in the Gallardo, and the first engine developed for Automobili Lamborghini S.p.A. after they were acquired by AUDI AG - part of the Volkswagen Group. As such, it shares components and technology from other members of the group, specifically Audi.

Its crankcase and cylinder block is built at the Audi Hungaria Motor Kft. factory in Győr,Hungary, whilst final assembly is at Sant'Agata, Italy. Its 90° vee angle is unusual for this particular configuration of cylinders; it was chosen to keep the center of gravity of the engine low. For the same reason, a dry sump lubrication system was also used.

There is speculation that this engine will also be fitted to a planned Audi RSR sports car, based on the Audi Rosemeyer concept.

There was also some speculation that the engine block of the original 5.0 litre Lamborghini V10 is closely based on the Audi 4.2 FSI V8, which Audi produces for their luxury cars. However, this was denied by AUDI AG, in their official documentation for their 5.2 FSI V10 engine, as used in the Audi S6 and Audi S8 - the Lamborghini 5.0 V10 has a cylinder bore spacing of 88 millimetres (3.46 in) between centres, whereas the Audi 5.2 V10 cylinder bore spacing is 90 millimetres (3.54 in).The cylinder heads use the four valves per cylinder layout favoured by the Italian firm, rather than the five valve per cylinder variation formerly favoured by the German members of Volkswagen Group - including Audi and Volkswagen Passenger Cars. It was later confirmed by Stefan Reil of Audi's quattro GmbH subsidiary that the new 5.2 litre Lamborghini V10 does share technologes with the Audi 5.2 V10 engine, as is evident by Lamborghini's usage of Audi's Fuel Stratified Injection, and 90 mm cylinder spacing.

Specifications

engine configuration

90° V10 engine; dry sump lubrication system

engine displacement etc

5.0 — 4,961 cubic centimetres (302.7 cu in); bore x stroke: 82.5 by 92.8 millimetres(3.25 in × 3.65 in) (stroke ratio: 0.89:1 - undersquare/long-stroke), 496.1 cc per cylinder;compression ratio: 11.0:1

5.2 — 5,204 cubic centimetres (317.6 cu in); bore x stroke: 84.5 by 92.8 millimetres (3.33 × 3.65 in) (stroke ratio: 0.91:1 - undersquare/long-stroke), 520.4 cc per cylinder; compression ratio: 12.5:1

cylinder block and crankcase

5.0 — cast aluminium alloy with integrated liners with eutectic alloy; 88 mm (3.46 in) cylinder bore spacing;forged steel crankshaft with split crankpins (to create even 72 deg firing interval with the 90 deg vee-angle)

5.2 — cast aluminium alloy; 90 mm cylinder bore spacing; forged steel crankshaft with shared crankpins (creating an uneven firing interval of either 54 deg or 90 deg separation)

cylinder heads and valvetrain

cast aluminium alloy, four valves per cylinder, 40 valves total, low-friction roller cam followers with automatic hydraulic valve clearance compensation, 2x chain driven double overhead camshafts (2xDOHC - two overhead camshafts per cylinder bank - 'quad cam'), continuously variable valve timing system both for intake and exhaust

aspiration

two air filters, two hot-film air mass meters, two cast alloy throttle bodies each with electronically controlled 'drive by wire' throttle butterfly valves, cast magnesium alloy variable geometry and resonance intake manifold

fuel system

5.0 — two linked common rail fuel distributor rails, electronic sequential multi-point indirect fuel injection with 10 intake manifold-sited fuel injectors

5.2 — fully demand-controlled and returnless; fuel tank mounted low pressure fuel pump, Fuel Stratified Injection (FSI):two inlet camshaft double-cam driven single-piston high-pressure injection pumps maintaining pressure in the two stainless steel common rail fuel distributor rails, ten combustion chamber sited direct injection solenoid-controlled sequential fuel injectors

ignition system and engine management

mapped direct ignition with centrally mounted spark plugs and ten individual direct-acting single spark coils; two Lamborghini LIE electronic engine control unit (ECUs) working on the 'master and slave' concept due to the high revving nature of the engine

exhaust system

5.0 — five-into-one exhaust manifolds for each cylinder bank

5.2 — 2-1-2 branch exhaust manifold per cylinder bank to minimise reverse pulsation of expelled exhaust gasses

5.0 power and torque outputs and applications

368 kilowatts (500 PS; 493 bhp) @ 7,800 rpm; 510 newton metres (376 lbf·ft) @ 4,500 rpm (80% available from 1,500 rpm) — 2003-2005

382 kilowatts (519 PS; 512 bhp) @ 8,000 rpm; 510 newton metres (376 lbf·ft) @ 4,250 rpm — SE, Spyder, and 2006-on

390 kilowatts (530 PS; 523 bhp) @ 8,000 rpm; 510 newton metres (376 lbf·ft) @ 4,250 rpm — Superleggera

5.2 power and torque outputs and applications

412 kilowatts (560 PS; 553 bhp) @ 8,000 rpm; 540 newton metres (398 lbf·ft) @ 6,500 rpm — LP560/4 - 2008-on