Patent ID: 8186153

Claim:
An engine compartment arrangement for an agricultural harvester comprising an engine ( 10 ); a diesel particulate filter ( 12 ) coupled to the engine ( 10 ) to receive and filter hot exhaust gases therefrom, the diesel particulate filter being configured for periodic high temperature regeneration; a fan ( 14 ); a radiator ( 16 ) disposed in a cooling airflow path in front of the fan ( 14 ) and coupled to the engine ( 10 ) to cool said engine ( 10 ); and a cleaning air duct ( 18 ) having a first end ( 20 ) disposed at an outlet of the fan ( 14 ) to receive a portion of the air ejected from the fan ( 14 ),and having a second end ( 22 ) disposed adjacent to the top of the diesel particulate filter ( 12 ) to exhaust a jet of the ejected air at a sufficient speed and in sufficient volume across the top surface ( 24 ) of the diesel particular filter ( 12 ) to prevent an accumulation of agricultural debris on top of the diesel particulate filter ( 12 ).