JPS57179357A - Intake device for double-intake type internal combustion engine - Google Patents

Intake device for double-intake type internal combustion engine

Info

Publication number
JPS57179357A
JPS57179357A JP56063422A JP6342281A JPS57179357A JP S57179357 A JPS57179357 A JP S57179357A JP 56063422 A JP56063422 A JP 56063422A JP 6342281 A JP6342281 A JP 6342281A JP S57179357 A JPS57179357 A JP S57179357A
Authority
JP
Japan
Prior art keywords
intake
load
primary
carburetor
passage
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.)
Granted
Application number
JP56063422A
Other languages
Japanese (ja)
Other versions
JPH0154545B2 (en
Inventor
Yasuyuki Sugiura
Kazuo Nakama
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.)
Suzuki Motor Corp
Original Assignee
Suzuki 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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP56063422A priority Critical patent/JPS57179357A/en
Publication of JPS57179357A publication Critical patent/JPS57179357A/en
Publication of JPH0154545B2 publication Critical patent/JPH0154545B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10183—Engines having intake ducts fed from a separate carburettor or injector, the idling system being considered as a separate carburettor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10275—Means to avoid a change in direction of incoming fluid, e.g. all intake ducts diverging from plenum chamber at acute angles; Check valves; Flame arrestors for backfire prevention
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/108—Intake manifolds with primary and secondary intake passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Check Valves (AREA)

Abstract

PURPOSE:To prevent deterioration in combustibility of fuel, by providing in a high-load intake passage a simple check valve capable of allowing back-flow of intake air leaked to the secondary side at the time of low-load operation of an engine in an intake system in which a low-load and a high-load intake passages are joined together at an upstream part of a single intake valve. CONSTITUTION:A double-intake type internal combustion engine is arranged such that a primary and a secondary intake passages 3, 4 communicated respectively to a primary low-load carburetor 7 and a secondary high-load carburetor 8 joins together at an upstream part of an intake valve 2. In such an arrangement, a simple check valve 12 easy to install is set in the secondary intake passage 4. The check valve 12 is designed to permit back-flow of intake air leaked to the secondary side in such a load region that only the primary carburetor is in operation. Here, providing that the sectional area of the primary intake passage 3 is S1, that of the back-flow permitting passage of the secondary intake passage 4 is S2, and the internal sectional area of an intake valve seat is SV.S, it is required to satisfy the following relationsip, (S2/S1)<0.5 and (S1+S2)/SV.S<0.3.
JP56063422A 1981-04-28 1981-04-28 Intake device for double-intake type internal combustion engine Granted JPS57179357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56063422A JPS57179357A (en) 1981-04-28 1981-04-28 Intake device for double-intake type internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56063422A JPS57179357A (en) 1981-04-28 1981-04-28 Intake device for double-intake type internal combustion engine

Publications (2)

Publication Number Publication Date
JPS57179357A true JPS57179357A (en) 1982-11-04
JPH0154545B2 JPH0154545B2 (en) 1989-11-20

Family

ID=13228829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56063422A Granted JPS57179357A (en) 1981-04-28 1981-04-28 Intake device for double-intake type internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57179357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009121446A (en) * 2007-11-19 2009-06-04 Soji Nakagawa Structure and method for straightening intake air of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009121446A (en) * 2007-11-19 2009-06-04 Soji Nakagawa Structure and method for straightening intake air of internal combustion engine

Also Published As

Publication number Publication date
JPH0154545B2 (en) 1989-11-20

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