JPS55153848A - Exhaust gas recycling device for internal combustion engine - Google Patents

Exhaust gas recycling device for internal combustion engine

Info

Publication number
JPS55153848A
JPS55153848A JP5963579A JP5963579A JPS55153848A JP S55153848 A JPS55153848 A JP S55153848A JP 5963579 A JP5963579 A JP 5963579A JP 5963579 A JP5963579 A JP 5963579A JP S55153848 A JPS55153848 A JP S55153848A
Authority
JP
Japan
Prior art keywords
valve
negative pressure
amount
pressure chamber
acceleration
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
JP5963579A
Other languages
Japanese (ja)
Inventor
Toshimi Murai
Hiroki Matsuoka
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 JP5963579A priority Critical patent/JPS55153848A/en
Publication of JPS55153848A publication Critical patent/JPS55153848A/en
Pending legal-status Critical Current

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Landscapes

  • Exhaust-Gas Circulating Devices (AREA)

Abstract

PURPOSE: To reduce NOX at the time of acceleration by providing the 1st valve device, which increases the amount of exhaust gas in proportion to air intake, and the 2nd valve derive, which makes it inversely proportional to negative pressure, and by increasing the amount of return flow particularly at the time of acceleration.
CONSTITUTION: The suction and the exhaust pipe of an engine 1 are connected by means of return flow pipes 19 and 20, having the 1st and the 2nd control valves 7 and 9. A negative pressure chamber 12 of the 1st control valve 7 is connected to suction pipe 3 placed slightly upward of a throttle valve 4 when it is completely closed, via the negative pressure adjusting valve 8, and its opening increases with the increase in the amount of air. A negative pressure chamber 33 of the 2nd control valve 9 is connected to a suction manifold 2 via a throttle 49, and its opening decreases with the increase in the amount of negative pressure. Further, the negative pressure chamber 33 is provided with a cutout valve 10, which controls external air from pipe 52. At the time of acceleration, a valve 51 is opened by the pressure transfer delay between negative pressure chambers 39 and 40, and a valve 37 is opened so as to make the pressure chamber 33 into atmospheric pressure.
COPYRIGHT: (C)1980,JPO&Japio
JP5963579A 1979-05-17 1979-05-17 Exhaust gas recycling device for internal combustion engine Pending JPS55153848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5963579A JPS55153848A (en) 1979-05-17 1979-05-17 Exhaust gas recycling device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5963579A JPS55153848A (en) 1979-05-17 1979-05-17 Exhaust gas recycling device for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS55153848A true JPS55153848A (en) 1980-12-01

Family

ID=13118879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5963579A Pending JPS55153848A (en) 1979-05-17 1979-05-17 Exhaust gas recycling device for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS55153848A (en)

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