Vacuum pump aspirator for work vehicle pre-cleaner

摘要

The belt driven vacuum pump is provided on a work vehicle to supply the vacuum needed for the engine intake air pre-cleaner. The vacuum pump is driven at or proportional to the engine speed to ensure proper vacuum for the intake airflow. Preferably, the vacuum pump is integrated into an accessory support bracket that carries other belt driven components such as the alternator, etc. The support bracket forms the vacuum pump housing to reduce the number of components required for the vacuum pump. Air outlet passages are formed in the support bracket and are preferably directed toward accessories or engine components that can benefit from additional cooling provided by the vacuum pump exhaust air. The vacuum pump can also be equipped with a hose at the inlet and/or the exhaust sides of the vacuum pump to provide a vacuum cleaner or a blower for use on or about the work vehicle.