| 摘要 |
PCT No. PCT/SE96/01086 Sec. 371 Date Mar. 6, 1998 Sec. 102(e) Date Mar. 6, 1998 PCT Filed Sep. 6, 1996 PCT Pub. No. WO97/08937 PCT Pub. Date Mar. 13, 1997In a rotary chopper associated with a harvester combine and having a chopper rotor and counter-knives cooperating therewith in the housing of the rotary chopper, a fan is provided for supply of supplementary air at an excess pressure to the housing in order to increase the amount and the rate of the air exiting the rotary chopper and thus to improve the spreading of the comminuted material onto the ground.
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