JPS5765829A - Exhaust gas puridier for internal combustion engine - Google Patents

Exhaust gas puridier for internal combustion engine

Info

Publication number
JPS5765829A
JPS5765829A JP55140775A JP14077580A JPS5765829A JP S5765829 A JPS5765829 A JP S5765829A JP 55140775 A JP55140775 A JP 55140775A JP 14077580 A JP14077580 A JP 14077580A JP S5765829 A JPS5765829 A JP S5765829A
Authority
JP
Japan
Prior art keywords
exhaust gas
secondary air
passage
control valve
pressure
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
JP55140775A
Other languages
Japanese (ja)
Other versions
JPS6119813B2 (en
Inventor
Tomio Ishida
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor Co Ltd
Daihatsu Kogyo KK
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 Daihatsu Motor Co Ltd, Daihatsu Kogyo KK filed Critical Daihatsu Motor Co Ltd
Priority to JP55140775A priority Critical patent/JPS5765829A/en
Publication of JPS5765829A publication Critical patent/JPS5765829A/en
Publication of JPS6119813B2 publication Critical patent/JPS6119813B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To simplify a construction of an engine which is equipped with an exhaust gas recirculator and a secondary air supply device by applying one passage for a combination usage as an exhaust gas recirculation passage running to a suction system and a secondary air passage to exhaust and suction systems.
CONSTITUTION: A passage 7 applied for a combination of recirculation of an exhaust gas and supply of a secondary air is removable to be connected to an exhaust passage 2, opening to a recirculation control valve 8 and a secondary air supply device 9. At idling where a throttle valve 2 is closed, a pressure in each port of a carburetor 5 is reduced up to an atmospheric pressure so that the recirculation control valve 8 is ceased. The resultant pressure is lowered to a great negative pressure, which acts on a diaphragm 41 inside a secondary air control valve 34 to open a port 38. A check valve 33 is opened or closed in response to a pulsation in the exhaust passage 2. In operation nearly to the full throttle, the pressure is sent through an exhaust gas pressure regulation valve 15 to open the recirculation control valve 8. A secondary air control valve is placed under a control of an air fuel ratio sensor 49 and a thermo-sensor 50 of an exhaust gas purifier 3.
COPYRIGHT: (C)1982,JPO&Japio
JP55140775A 1980-10-06 1980-10-06 Exhaust gas puridier for internal combustion engine Granted JPS5765829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140775A JPS5765829A (en) 1980-10-06 1980-10-06 Exhaust gas puridier for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140775A JPS5765829A (en) 1980-10-06 1980-10-06 Exhaust gas puridier for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5765829A true JPS5765829A (en) 1982-04-21
JPS6119813B2 JPS6119813B2 (en) 1986-05-19

Family

ID=15276454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140775A Granted JPS5765829A (en) 1980-10-06 1980-10-06 Exhaust gas puridier for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5765829A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63130811U (en) * 1987-02-18 1988-08-26

Also Published As

Publication number Publication date
JPS6119813B2 (en) 1986-05-19

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