Philip C Kreimer

US Patent:

54562392, Oct 10, 1995

Filed:

Jul 27, 1994

Appl. No.:

8/281223

Inventors:

Gregory H. Henderson - Columbus IN
David M. Ruch - Columbus IN
Brian W. Zellmer - Medina OH
Chad L. Kelly - Gahanna OH
Philip C. Kreimer - Cincinnati OH

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

F16K 717
F01M 1300

US Classification:

123563

Abstract:

A crankcase ventilation system for a vehicle includes an arrangement of flow conduits and control valves which cooperate with a two-chamber accumulator and with various vehicle components to route crankcase gases to the intake manifold. The primary vehicle components include a compressor, an aftercooler positioned downstream from the compressor, and an engine having an intake manifold and a crankcase. One chamber of the accumulator is coupled by one conduit to the inlet side of the compressor and by a second conduit to the outlet side of the compressor. These two conduits are controlled by a dual valve arrangement. The other chamber of the accumulator is connected by one conduit to the crankcase and by a separate conduit to the intake manifold. Each conduit includes a control valve. The system operates on pressure differences existing between these various components.