Have a look inside the new Paccar MX-13

Available in DAF trucks for the past six years, the Paccar MX-13 engine is currently being trialled in a number of Kenworth trucks in Australia and New Zealand.

The 13-litre engine uses Compacted Graphite Iron (CGI) in both cylinder block and cylinder head. CGI is lighter and stronger than the traditional “grey” iron traditionally used to cast major diesel engine components and contributes to the engine’s offering of an improved power-to-weight ratio to optimise payload and to reduce tare weight especially in relation to the front axle. The lower section of the cylinder block is supported by an aluminium girdle for added crankcase stiffness.

A further reduction of engine weight is achieved by the engine incorporating a “stepped die” forged crankshaft that requires no counter weights. The single camshaft is located low in the cylinder block and is driven by a gear train from the rear of the engine rather than from the front as with most other diesel engines.

Paccar engineers explain this feature as being able to result in a smoother running engine with better harmonic balancing.

The PACCAR MX-13 engine will be available in 460hp and 510hp ratings and develops its maximum torque from 1000 rpm.


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