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US 10,975,810 B2Granted
Positive crankcase ventilation system
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJeong Kyu Lim
Life of this patent
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Abstract
A positive crankcase ventilation (PCV) system includes: an oil separator separating oil from blow-by gases; a PCV valve allowing the blow-by gases from which the oil has been separated by the oil separator to flow into intake ports of a cylinder head; a PCV passage vertically extending from the PCV valve; a PCV chamber connected to the PCV passage; and a plurality of bypass passages branching off from the PCV chamber to the intake ports, respectively.
Claims6
A positive crankcase ventilation (PCV) system, comprising:
- an oil separator separating oil from blow-by gases;
- a PCV valve allowing the blow-by gases from which the oil has been separated by the oil separator to flow into intake ports of a cylinder head;
- a PCV passage vertically extending from the PCV valve;
- a PCV chamber connected to the PCV passage;
- and
- a plurality of bypass passages branching off from the PCV chamber to the intake ports, respectively,
- wherein the PCV chamber extends horizontally above the intake ports,
- wherein the PCV passage extends straightly to be orthogonal to the PCV chamber, and
- wherein the PCV passage includes a first passage formed in the head cover and a second passage formed in the cam carrier, the first passage extending straightly, the second passage extending straightly, and a diameter of the first passage being larger than a diameter of the second passage.
6 more elements
Dependencies are inferred from the claim text.