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KTM was able to gain Audi AG as its partner in developing the drive unit. The four-cylinder TFSI engine represents the X-Bow’s construction principles in an ingenious way: by featuring lightweight, high-performance and intelligent technologies.
The engine’s outstanding attribute is its gasoline direct injection technology, FSI. In this case, it’s combined with an exhaust turbocharger plus an intercooler. Thanks to FSI, the engine can utilize fuel better than one with ordinary intake manifold injection and it even gets by on less fuel in the frequently used partial load range.
The injection takes place at a pressure level between 30 and 110 bar, valves in the intake system direct the inflowing air into a cylindrical movement. A continuously variable intake camshaft ensures optimal cylinder charging at any speed. Two balancer shafts compensate the second order inertia forces and so guarantee superior, low-vibration operation.
The KTM X-Bow’s long-stroking, four-valve engine delivers a powerful performance: 310 newton-metres of torque peaks at a level between 2000 and 5000 rpm. The peak performance of 177kW (240 hp) is achieved at 5500 rpm. Even more powerful engine variations in the 300-horsepower range are planned at a later date.
The drive unit package is complemented by a manual 6-gear transmission, which is also made by VW-group and can be equipped with a limited-slip differential if so desired. In 2008 the KTM X-Bow is only available with the limited-slip differential. The drive comes from the rear wheels.
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