JPS5749023A - Intake unit for multi cylinder internal-combustion engine - Google Patents

Intake unit for multi cylinder internal-combustion engine

Info

Publication number
JPS5749023A
JPS5749023A JP55124928A JP12492880A JPS5749023A JP S5749023 A JPS5749023 A JP S5749023A JP 55124928 A JP55124928 A JP 55124928A JP 12492880 A JP12492880 A JP 12492880A JP S5749023 A JPS5749023 A JP S5749023A
Authority
JP
Japan
Prior art keywords
path
valve
open
interconnecting
engine
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
JP55124928A
Other languages
Japanese (ja)
Inventor
Masashi Mizutani
Akira Nishiwaki
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 JP55124928A priority Critical patent/JPS5749023A/en
Publication of JPS5749023A publication Critical patent/JPS5749023A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles

Abstract

PURPOSE: To enhance stability of an engine in the range of low load operation and to improve fuel consumption, by a method wherein an open and close valve, controlled by the output of an engine, is provided to an interconnecting path of a motorcycle, in a unit to which a secondary intake path, interconnected with each other by an interconnecting path, fit for the motorcycle, is provided.
CONSTITUTION: The secondary intake path 15 is opened to an intake path 44 adjacent to an intake valve 13 of each cylinder of four cycled internal-combustion engine, the other end of the secondary intake path 15 is connected to an interconnecting path 17 through a vertical hole 16, and each secondary intake path 15 is mutually interconnected through the interconnecting path 17. In this case, a cylindrical, open and close valve 22, pressed to the right side by the tension of a spring 21, is slidably inserted in an interconnecting path 17 with some play. The open and close valve 22 is consisted of a valve member 22a which is provided with a valve port 23, and a spacer 22b, and is opened and closed by a diaphragm unit 24, which works as a means to detect the output of an engine. That is, an open and close valve 22 is moved to the left side in accordance with a high load operation in which the intake negative pressure introduced to a port L of a low pressure chamber 31 becomes higher than the predetermined value, and the degrees of opening of a valve port 23 to a vertical hole 16 is enlarged.
COPYRIGHT: (C)1982,JPO&Japio
JP55124928A 1980-09-08 1980-09-08 Intake unit for multi cylinder internal-combustion engine Pending JPS5749023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55124928A JPS5749023A (en) 1980-09-08 1980-09-08 Intake unit for multi cylinder internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55124928A JPS5749023A (en) 1980-09-08 1980-09-08 Intake unit for multi cylinder internal-combustion engine

Publications (1)

Publication Number Publication Date
JPS5749023A true JPS5749023A (en) 1982-03-20

Family

ID=14897625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55124928A Pending JPS5749023A (en) 1980-09-08 1980-09-08 Intake unit for multi cylinder internal-combustion engine

Country Status (1)

Country Link
JP (1) JPS5749023A (en)

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