INTAKE MANIFOLD DRAIN ASSEMBLY OF AN ENGINE
First Claim
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1. An intake manifold drain assembly of an engine, comprising:
- a drain tube connected to a bottom of a manifold chamber;
an oil separator connected to an engine block; and
a controlled check valve coupled to the drain tube and the oil separator and configured to allow fluid in the manifold chamber to flow into the oil separator and control a flow passing the controlled check valve below a threshold flowrate.
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Abstract
An intake manifold drain assembly of an engine comprises a drain tube connected to a bottom of a manifold chamber; an oil separator connected to an engine block; and a controlled check valve connecting the drain tube to the oil separator and configured to allow liquid and gas in the manifold chamber to flow into the oil separator and control a gas flow passing the controlled check valve below a threshold flowrate.
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Citations
20 Claims
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1. An intake manifold drain assembly of an engine, comprising:
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a drain tube connected to a bottom of a manifold chamber; an oil separator connected to an engine block; and a controlled check valve coupled to the drain tube and the oil separator and configured to allow fluid in the manifold chamber to flow into the oil separator and control a flow passing the controlled check valve below a threshold flowrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An intake manifold system of an engine in a vehicle, comprising:
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a manifold chamber to receive an inlet gas and a positive crankcase ventilation gas (PCV) from a crankcase; an intake manifold drain assembly including; a drain tube connected to a connection location at a bottom of the manifold chamber, wherein the connection location is near or at a lowest location of the manifold chamber; an oil separator connected to an engine block; and a controlled check valve coupled to the drain tube and the oil separator and configured to allow fluid in the manifold chamber to flows into the oil separator and control a flow passing the controlled check valve below a threshold flowrate. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification