09.05.2012 Views

Ktm-Sportmotorcycle AG 5230 Mattighofen, Austria www.ktm.com

Ktm-Sportmotorcycle AG 5230 Mattighofen, Austria www.ktm.com

Ktm-Sportmotorcycle AG 5230 Mattighofen, Austria www.ktm.com

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eNgiNe<br />

The previous KTM engines with 450 and 510 cc<br />

displacement were the reference in their class. The<br />

newly developed engine generation is superior to<br />

them both in every respect: new SOHC cylinder head,<br />

new cylinder, new ducts, new <strong>com</strong>bustion chamber,<br />

new camshaft, new forged pistons, new piston rings,<br />

new die-cast engine case, new crankshaft, new oil<br />

circuit, new clutch, new injection system, lighter,<br />

more <strong>com</strong>pact, more efficient performance. And those<br />

are only the most significant points.<br />

clutch<br />

New clutch system<br />

featuring smoothshifting,<br />

hydraulic<br />

clutch actuation from<br />

Brembo. Innovative,<br />

machined, steel outer<br />

clutch hub without<br />

rivets. The clutch<br />

package is pre-tensioned by means of a central<br />

spring washer. This facilitates a very flat construction<br />

with integrated back-damping, which<br />

ensures maximum traction in every situation<br />

and conserves the transmission.<br />

Engine<br />

case<br />

A weight saving of over 2 kg in the engine alone<br />

is a clear declaration of intent: The most significant<br />

contribution to this is made by the meticulously<br />

designed engine case, which is manufactured for<br />

the first time in a die-casting process. Also new is the<br />

elastic and, at the same time, high-strength aluminium<br />

alloy that provides the housing with the best possible<br />

protection from mechanical damage. The balancer shaft<br />

is positioned laterally and simultaneously drives the water<br />

pump, hence facilitating a slimmer and shorter design.<br />

450/500<br />

• Leading performance<br />

• Controllable power<br />

• Extremely lightweight, <strong>com</strong>pact package<br />

Engine<br />

management<br />

Groundbreaking power, direct responsiveness,<br />

homogeneous performance: in conjunction<br />

with the new engines, the new engine management<br />

system from Keihin provides for perfect<br />

performance characteristics in enduro use. The<br />

features: 42 mm throttle valve sensor, electronic<br />

cold-start enrichment, automatic adaptation to<br />

the respective temperature and altitude conditions.<br />

The oil-cooled 196 W alternator ensures<br />

reliable energy provision; the closed-loop lambda<br />

control reduces emission levels in the homologated<br />

condition. Optionally with map-select switch<br />

and the user-setting tool (PowerParts).<br />

SOHC<br />

cylinder head<br />

The new SOHC cylinder head has a <strong>com</strong>pletely<br />

redesigned <strong>com</strong>bustion chamber and flowoptimised<br />

ducts. By means of rocker arms, the<br />

overhead camshaft opens 4 valves that are<br />

made of high-quality titanium on the intake<br />

side. The overall concept has been perfectly<br />

tuned to the new injection system.<br />

Oil<br />

circuit<br />

All 4-stroke models have a <strong>com</strong>mon oil circuit with separate pressure<br />

and suction pumps. The pressure pump guarantees reliable<br />

pressurised lubrication of crankshaft, piston, balancer shaft and<br />

valve controls. It also ensures cooling of the ignition and lubrication<br />

of the clutch. A suction pump draws oil from the crankcase<br />

and uses it to lubricate the transmission. This creates a slight<br />

vacuum in the crankcase, which has the positive “side effect” of<br />

increasing engine performance.

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