Patent ID: 7946368
Filing Date: 2011-05-24
Classification: A01D,F01P,F02M,F04D

Abstract:
1. An agricultural machine, comprising: an internal combustion engine having a crankshaft; an air cleaner system including an air cleaner and an air pre-cleaner coupled to said air cleaner, said air cleaner system being coupled in fluid communication with said internal combustion engine for supplying combustion air to said internal combustion engine, said air pre-cleaner having a first vacuum port; a cooling package in fluid communication with said internal combustion engine, said cooling package including a radiator having an air inlet and an air outlet, a rotary screen mounted at said air inlet of said radiator, and a vacuum duct having a vacuum opening and a second vacuum port, said vacuum opening of said vacuum duct being positioned adjacent said rotary screen; and a fan unit coupled in fluid communication with said air pre-cleaner and said cooling package, said fan unit including: