WO2008041084A8 - Internal combustion engine - Google Patents

Internal combustion engine

Info

Publication number
WO2008041084A8
WO2008041084A8 PCT/IB2007/002866 IB2007002866W WO2008041084A8 WO 2008041084 A8 WO2008041084 A8 WO 2008041084A8 IB 2007002866 W IB2007002866 W IB 2007002866W WO 2008041084 A8 WO2008041084 A8 WO 2008041084A8
Authority
WO
WIPO (PCT)
Prior art keywords
port
point
plane
streamline
projected
Prior art date
Application number
PCT/IB2007/002866
Other languages
French (fr)
Other versions
WO2008041084A3 (en
WO2008041084A2 (en
Inventor
Takashi Amano
Original Assignee
Toyota Motor Co Ltd
Takashi Amano
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006270841A external-priority patent/JP4692459B2/en
Priority claimed from JP2007118574A external-priority patent/JP2008274832A/en
Priority claimed from JP2007119621A external-priority patent/JP4765996B2/en
Application filed by Toyota Motor Co Ltd, Takashi Amano filed Critical Toyota Motor Co Ltd
Priority to US12/310,797 priority Critical patent/US20100037840A1/en
Priority to EP07825226A priority patent/EP2074291A2/en
Publication of WO2008041084A2 publication Critical patent/WO2008041084A2/en
Publication of WO2008041084A3 publication Critical patent/WO2008041084A3/en
Publication of WO2008041084A8 publication Critical patent/WO2008041084A8/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25—Valve configurations in relation to engine
    • F01L2003/251—Large number of valves, e.g. five or more
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25—Valve configurations in relation to engine
    • F01L2003/255—Valve configurations in relation to engine configured other than parallel or symmetrical relative to piston axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25—Valve configurations in relation to engine
    • F01L2003/256—Valve configurations in relation to engine configured other than perpendicular to camshaft axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/48—Tumble motion in gas movement in cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

When viewed from the upper face of a cylinder head (52A) in which an intake port (10A) communicating with a combustion chamber (54) of an internal combustion engine (50A) is formed, a starting point (Pl) of the port (10A) is defined as a point of intersection of the streamline of the intake port (10A) and an inlet-side opening plane of the intake port (10A) as projected on a horizontal plane (S), and an end point (P2) is defined as a point of intersection of the streamline of the port (10A) and the center -axis of an intake valve (55) as projected on the horizontal plane (S). The starting point (Pl) is located closer to the center of the chamber (54) than a straight line (L2) that contains the end point (P2) and extends in a direction orthogonal to the axis of the crankshaft on the plane (S), and the streamline (F) of the port (10A) projected on the horizontal plane (S) is curved toward the center of the chamber (54), with respect to a straight line (L1) that contains the starting point (P1) and extends in a direction orthogonal to the axis of the crankshaft on the plane (S).
PCT/IB2007/002866 2006-10-02 2007-10-01 Internal combustion engine WO2008041084A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/310,797 US20100037840A1 (en) 2006-10-02 2007-10-01 Internal combustion engine
EP07825226A EP2074291A2 (en) 2006-10-02 2007-10-01 Internal combustion engine

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2006270841A JP4692459B2 (en) 2006-10-02 2006-10-02 Intake port shape of internal combustion engine
JP2006-270841 2006-10-02
JP2007-119621 2007-04-27
JP2007118574A JP2008274832A (en) 2007-04-27 2007-04-27 Internal combustion engine
JP2007119621A JP4765996B2 (en) 2007-04-27 2007-04-27 Internal combustion engine
JP2007-118574 2007-04-27

Publications (3)

Publication Number Publication Date
WO2008041084A2 WO2008041084A2 (en) 2008-04-10
WO2008041084A3 WO2008041084A3 (en) 2008-05-29
WO2008041084A8 true WO2008041084A8 (en) 2008-08-14

Family

ID=39154370

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/002866 WO2008041084A2 (en) 2006-10-02 2007-10-01 Internal combustion engine

Country Status (3)

Country Link
US (1) US20100037840A1 (en)
EP (1) EP2074291A2 (en)
WO (1) WO2008041084A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6288014B2 (en) * 2015-09-08 2018-03-07 トヨタ自動車株式会社 Internal combustion engine
JP6428715B2 (en) * 2016-07-06 2018-11-28 トヨタ自動車株式会社 Control device for internal combustion engine
JP6900932B2 (en) * 2018-04-18 2021-07-14 トヨタ自動車株式会社 Internal combustion engine cylinder head

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5564115A (en) * 1978-11-09 1980-05-14 Honda Motor Co Ltd Internal combustion engine
DE3327363A1 (en) * 1983-07-29 1985-02-07 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Cylinder head for an internal combustion engine
JP2597657B2 (en) * 1988-06-28 1997-04-09 日産自動車株式会社 Combustion chamber of internal combustion engine
GB8928386D0 (en) * 1989-12-15 1990-02-21 Ricardo Group Plc Internal combustion engine
JP3330745B2 (en) * 1994-09-30 2002-09-30 ヤンマーディーゼル株式会社 Diesel engine
JP3561987B2 (en) * 1994-12-07 2004-09-08 いすゞ自動車株式会社 Multi-valve intake engine
JP2000110697A (en) * 1998-10-09 2000-04-18 Mitsubishi Heavy Ind Ltd Lean burn gas engine
US6679219B1 (en) * 2000-02-23 2004-01-20 Louis A. Pacinelli Intake and exhaust valves for internal combustion engines
JP2003214166A (en) * 2002-01-18 2003-07-30 Mazda Motor Corp Spark ignition-type reciprocal engine

Also Published As

Publication number Publication date
US20100037840A1 (en) 2010-02-18
WO2008041084A3 (en) 2008-05-29
EP2074291A2 (en) 2009-07-01
WO2008041084A2 (en) 2008-04-10

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