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Hatz Diesel has released a four-cylinder diesel engine from its H-series with the newly developed Silent Pack. The-state-of-the-art Hatz 4H50TIC diesel unit performs up to 55 kw at a maximum torque of 240 Nm and complies with all current norms and requirements such as EU Stage IIIB or US EPA Tier 4 final. In connection with the insulation, specially developed for this engine, the Hatz 4H50TIC Silent Pack reaches a reduction of the noise emission by 4 decibel despite the cooler fan. Therefore, the engine is 60 per cent less noisy compared to the non-capsulated open power unit (OPU).The liquid-cooled diesel engines of the Hatz H-series are the more compact, lightweight and economical engines of their class. All the advantages of the non-capsulated Hatz four-cylinder diesel engine are the same for the insulated Hatz 4H50TIC with Silent Pack. During the development of the Silent Pack version it was very important for the engineers to keep the installation dimensions as small as possible and to keep the engine access for example for maintenance work. There is also a special flexibility for the world-wide operation. The high release temperature is identical to the non-capsulated version and the turbo charging gives enough buffer for applications in altitudes.