Caterpillar will be unveiling its new Cat hybrid excavator 336E H to the trade audience for the first time in Munich. Instead of losing the kinetic energy when braking the upper structure, it is captured in accumulators and re-used during swing acceleration. According to this American manufacturer, it has mastered the technically very difficult challenge of re-using hydraulic energy. The reward for the efforts of the developers, says the company, is a reduction in fuel consumption of approximately 25 per cent.