Patent ID: 8151774
Filing Date: 2012-04-10
Classification: B01D,F02B,F02D,F02M

Abstract:
1. In a turbocharged engine combustion air control system including an engine having an air intake manifold pre-cleaner including a body shaped for causing a cyclonic air flow between an inlet and a clean air outlet of said body and having a longitudinal axis, an air filter being coupled between said clean air outlet and a compressor, with said compressor being coupled to said intake manifold and operable for effecting a boost pressure in said intake manifold, the improvement comprising: a throttling member being located within, and mounted for movement along said longitudinal axis of, said body of said pre-cleaner for selective movement relative to said body for adjusting an amount of flow area between said throttle and said body; and a pressure-responsive control arrangement including a control device coupled to said throttling member and operable for increasing said flow area in response to increasing boost pressure.