JPS5546005A - Helically shaped suction port for internal combustion engine - Google Patents

Helically shaped suction port for internal combustion engine

Info

Publication number
JPS5546005A
JPS5546005A JP11666778A JP11666778A JPS5546005A JP S5546005 A JPS5546005 A JP S5546005A JP 11666778 A JP11666778 A JP 11666778A JP 11666778 A JP11666778 A JP 11666778A JP S5546005 A JPS5546005 A JP S5546005A
Authority
JP
Japan
Prior art keywords
helical
suction port
engine
helically shaped
shaped suction
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP11666778A
Other languages
Japanese (ja)
Inventor
Kiyoshi Nakanishi
Takeshi Okumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP11666778A priority Critical patent/JPS5546005A/en
Publication of JPS5546005A publication Critical patent/JPS5546005A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: To provide a helically shaped suction port for an internal combustion engine which can generate strong whirling flows in a combustion chamber of the engine during low speed running of the engine and can keep its loading efficiency from lowering during high speed high load running of the engine.
CONSTITUTION: During a suction stroke, fuel air mixture prepared in a carburettor is introduced into a combustion chamber 4 across a suction valve 5 by means of a helically shaped suction port 6. The suction port 6 consists of an entrance passage portion A having its axis slightly curved and having a rectangular cross section at its open end, and a helical portion B having its exit section 13 formed into a cylinder with its center axis coincident with a helical axis b of the helical portion B. Distance R of a side wall face 15 of the helical portion B from the helical axis b is substantially constant at its part adjacent to the entrance passage portion A and is gradually reduced towards a whirling direction C. Diameter of the curve that part of the side wall face 15 which presents an initial whirling flow forming region following a beginning point of the helical configuration is determined to be within a range from 1.1 to 1.25 times of the diameter of the exit section 13.
COPYRIGHT: (C)1980,JPO&Japio
JP11666778A 1978-09-25 1978-09-25 Helically shaped suction port for internal combustion engine Pending JPS5546005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11666778A JPS5546005A (en) 1978-09-25 1978-09-25 Helically shaped suction port for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11666778A JPS5546005A (en) 1978-09-25 1978-09-25 Helically shaped suction port for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5546005A true JPS5546005A (en) 1980-03-31

Family

ID=14692902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11666778A Pending JPS5546005A (en) 1978-09-25 1978-09-25 Helically shaped suction port for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5546005A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693215A (en) * 1982-09-18 1987-09-15 Kabushiki Kaisha Toyota Chuo Kenkyusho Inlet port for internal combustion engine
US6003485A (en) * 1997-06-10 1999-12-21 Nissan Motor Co., Ltd. Helical intake port for an internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212845A (en) * 1975-07-19 1977-01-31 Fujitsu Ltd Mode transformation device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212845A (en) * 1975-07-19 1977-01-31 Fujitsu Ltd Mode transformation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693215A (en) * 1982-09-18 1987-09-15 Kabushiki Kaisha Toyota Chuo Kenkyusho Inlet port for internal combustion engine
US6003485A (en) * 1997-06-10 1999-12-21 Nissan Motor Co., Ltd. Helical intake port for an internal combustion engine

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