Air intake system for a vehicle

• US 7,017,562 B2
• Filed: 12/28/2004
• Issued: 03/28/2006
• Est. Priority Date: 07/06/2004
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Jeon, Yong Joo
• Primary Examiner(s): MCMAHON, MARGUERITE J
• Application Number:
  US11/024,834
• Publication Number:
  US 20060005820A1
• Time in Patent Office: 455 Days
• Field of Search: 123572-574, 12318421- 18, 123/184.24, 123/184.34, 123/184.42, 123/184.47
• US Class Current: 123/572
• CPC Class Codes: F02M 35/10039 Intake ducts situated partly within or on the plenum chamber housing
• CPC Class Codes: F02M 35/10072 Intake runners
• CPC Class Codes: F02M 35/10222 Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
• CPC Class Codes: F02M 35/1034 Manufacturing and assembling intake systems
• CPC Class Codes: F02M 35/10354 Joining multiple sections together joining plastic materials together in general B29C65/00
• CPC Class Codes: F02M 35/1045 characterised by the charge distribution between the cylinders/combustion chambers or its homogenisation

Abstract

Because the PCV channel for guiding blow-by gas to a plenum is formed in an intake manifold, the blow-by gas can be equally supplied to respective combustion chambers. In addition, since a PCV nipple is mounted on the outermost intake runner that has a relatively high temperature, freezing of water vapor in the blow-by gas can be prevented in the PCV nipple.

Claims

1. An air intake system comprising:

a plenum forming a plenum chamber for storing intake air temporarily;

an intake manifold connected to the plenum and including a plurality of intake runners for guiding the intake air in the plenum chamber to a combustion chamber; and

a positive crankcase ventilation (PCV) hose connecting a cylinder head cover to the intake manifold, wherein a PCV channel for connecting the PCV hose to the plenum chamber is formed in the intake manifold such that blow-by gas supplied through the PCV hose flows to the plenum and wherein a PCV nipple connected to the PCV channel is mounted in an outermost intake runner of a plurality of intake runners of the intake manifold and the PCV hose is connected to the PCV nipple.

2. An air intake system comprising:

a plenum forming a plenum chamber for storing intake air temporarily;

an intake manifold connected to the plenum and including a plurality of intake runners for guiding the intake air in the plenum chamber to a combustion chamber; and

a positive crankcase ventilation (PCV) hose connecting a cylinder head cover to the intake manifold, wherein a PCV channel for connecting the PCV hose to the plenum chamber is formed in the intake manifold such that blow-by gas supplied through the PCV hose flows to the plenum and wherein the PCV channel for interconnecting the PCV hose and the plenum chamber protrudes from the intake manifold into the plenum, and the PCV channel is formed integrally with the intake manifold.

3. The system of claim 2, wherein the PCV channel is formed at an angle toward a lower direction such that the blow-by gas is supplied to the plenum chamber at an angled direction.