JPS55160121A - Intake system of internal combustion engine - Google Patents

Intake system of internal combustion engine

Info

Publication number
JPS55160121A
JPS55160121A JP6612079A JP6612079A JPS55160121A JP S55160121 A JPS55160121 A JP S55160121A JP 6612079 A JP6612079 A JP 6612079A JP 6612079 A JP6612079 A JP 6612079A JP S55160121 A JPS55160121 A JP S55160121A
Authority
JP
Japan
Prior art keywords
throttle valve
negative pressure
valve
pressure chamber
downstream
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
JP6612079A
Other languages
Japanese (ja)
Other versions
JPS5918530B2 (en
Inventor
Hideaki Matsui
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 JP54066120A priority Critical patent/JPS5918530B2/en
Publication of JPS55160121A publication Critical patent/JPS55160121A/en
Publication of JPS5918530B2 publication Critical patent/JPS5918530B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE: To maintain a pressure difference always at constant between places before and after the second throttle valve and obtain a high charging efficiency even when an engine is in a state of high speed and large load operation, by opening said throttle valve for said pressure difference becoming at least a prescribed value.
CONSTITUTION: A negative pressure is generated in an intake manifold 10 at the downstream from a throttle valve 12 of a carburetor and applied to a high pressure chamber 28 of a negative pressure control valve 23 through a conduction pipe 42. In a common link path 43 linked to an intake port 5d at the downstream from the second throttle valve 14, a negative pressure larger than that at the upstream side is produced and applied to a low pressure chamber 27 of the valve 23 through a conduction pipe 45. When a difference between the above said both negative pressures comes to be at least a prescribed value, a disphragm 26 is moved against the tension of a spring 33 to permit a valve unit 37 to close a link hole 39 simultaneously open an atmospheric hole 36. Consequently, the atmospheric air flows into a negative pressure chamber 20 of a throttle valve actuator 17 to rotate the second throttle valve 14 in the direction of an arrow mark A.
COPYRIGHT: (C)1980,JPO&Japio
JP54066120A 1979-05-30 1979-05-30 Internal combustion engine intake system Expired JPS5918530B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54066120A JPS5918530B2 (en) 1979-05-30 1979-05-30 Internal combustion engine intake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54066120A JPS5918530B2 (en) 1979-05-30 1979-05-30 Internal combustion engine intake system

Publications (2)

Publication Number Publication Date
JPS55160121A true JPS55160121A (en) 1980-12-12
JPS5918530B2 JPS5918530B2 (en) 1984-04-27

Family

ID=13306690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54066120A Expired JPS5918530B2 (en) 1979-05-30 1979-05-30 Internal combustion engine intake system

Country Status (1)

Country Link
JP (1) JPS5918530B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57102517A (en) * 1980-12-17 1982-06-25 Toyota Motor Corp Intake device for internal combustion engine
JPS5965515A (en) * 1982-10-05 1984-04-13 Mazda Motor Corp Intake apparatus of engine
JPS59150943A (en) * 1983-02-16 1984-08-29 Mazda Motor Corp Control apparatus for engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57102517A (en) * 1980-12-17 1982-06-25 Toyota Motor Corp Intake device for internal combustion engine
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
JPS59150943A (en) * 1983-02-16 1984-08-29 Mazda Motor Corp Control apparatus for engine
JPH0251051B2 (en) * 1983-02-16 1990-11-06 Mazda Motor

Also Published As

Publication number Publication date
JPS5918530B2 (en) 1984-04-27

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