POWER UNIT AND CONTROLLING METHOD THEREFOR
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United States of America Patent
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Issued Date -
Feb 21, 2013
app pub date -
Apr 11, 2011
filing date -
Apr 13, 2010
priority date (Note) -
Abandoned
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Abstract
A power unit includes two or more power modules (1, 2, 3), each comprising an engine (11), a transfer case (12) connected to the engine (11) and a hydraulic pump set (13) connected to the transfer case (12). A controlling method for the power unit is also disclosed. Compared to the prior art of using a single super high power engine, the hydraulic mobile crane using the in power unit has advantages of low cost, high reliability, and not being subjected to the restrictions by road transportation conditions during transportation.
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