JPS5578124A - Suction device for engine - Google Patents

Suction device for engine

Info

Publication number
JPS5578124A
JPS5578124A JP15175078A JP15175078A JPS5578124A JP S5578124 A JPS5578124 A JP S5578124A JP 15175078 A JP15175078 A JP 15175078A JP 15175078 A JP15175078 A JP 15175078A JP S5578124 A JPS5578124 A JP S5578124A
Authority
JP
Japan
Prior art keywords
air
control valve
passage
suction device
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
JP15175078A
Other languages
Japanese (ja)
Inventor
Goichi Kitagawa
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP15175078A priority Critical patent/JPS5578124A/en
Publication of JPS5578124A publication Critical patent/JPS5578124A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B2031/003Modifying induction systems for imparting a rotation to the charge in the cylinder with an auxiliary intake conduit starting upstream of personally controlled throttle valve and ending upstream of and close to the intake valve, or with an auxiliary intake conduit being an independent passage, e.g. having its own carburettor

Abstract

PURPOSE: To equalize the air/fuel ratio in the cylinders for an engine with a suction device having a throttle valve and a control valve at first suction air passage in a main carburetor by opening an air supply port at the downstream of the control valve and connecting first and second air intake passage through a balance passage.
CONSTITUTION: A suction device having a first suction air passage 6 including a main carburetor 7 containing a throttle valve 8 and a fully closed control valve 9, and a second suction air passage 11 including a sub carburetor 12 containing a sub throttle valve 13 opened or closed via the control valve 9 through a shaft 14 fully closes the control valve 9 and the sub throttle valve 13 in low load range. This closure of the suction device is not complete due to machining error to apprehend a danger of excessively dense air/fuel mixture ratio. Accordingly, an air supply port 32 is opened in the vicinity of the control valve 9 at the downstream of the control vlave 9, and the first air intake passage 6 is communciated through a balance passage 28 provided with a spacer 27 with the second air intake passage 11 to thereby accelerate the evaporation of fuel and equalize the air-fuel ratio in the cylinders.
COPYRIGHT: (C)1980,JPO&Japio
JP15175078A 1978-12-07 1978-12-07 Suction device for engine Pending JPS5578124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15175078A JPS5578124A (en) 1978-12-07 1978-12-07 Suction device for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15175078A JPS5578124A (en) 1978-12-07 1978-12-07 Suction device for engine

Publications (1)

Publication Number Publication Date
JPS5578124A true JPS5578124A (en) 1980-06-12

Family

ID=15525460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15175078A Pending JPS5578124A (en) 1978-12-07 1978-12-07 Suction device for engine

Country Status (1)

Country Link
JP (1) JPS5578124A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877127U (en) * 1981-11-20 1983-05-25
JPS5965515A (en) * 1982-10-05 1984-04-13 Mazda Motor Corp Intake apparatus of engine
US4520776A (en) * 1982-02-08 1985-06-04 Suzuki Jidosha Kogyo Kabushiki Kaisha Intake port structure for internal combustion engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877127U (en) * 1981-11-20 1983-05-25
JPS6226590Y2 (en) * 1981-11-20 1987-07-08
US4520776A (en) * 1982-02-08 1985-06-04 Suzuki Jidosha Kogyo Kabushiki Kaisha Intake port structure for internal combustion engines
JPS5965515A (en) * 1982-10-05 1984-04-13 Mazda Motor Corp Intake apparatus of engine
JPS6132482B2 (en) * 1982-10-05 1986-07-28 Matsuda Kk

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