JPS5564112A - Secondary air supplying system for internal combustion engine - Google Patents

Secondary air supplying system for internal combustion engine

Info

Publication number
JPS5564112A
JPS5564112A JP13608278A JP13608278A JPS5564112A JP S5564112 A JPS5564112 A JP S5564112A JP 13608278 A JP13608278 A JP 13608278A JP 13608278 A JP13608278 A JP 13608278A JP S5564112 A JPS5564112 A JP S5564112A
Authority
JP
Japan
Prior art keywords
pipe
exhaust system
secondary air
check valve
combustion 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.)
Granted
Application number
JP13608278A
Other languages
Japanese (ja)
Other versions
JPS5928732B2 (en
Inventor
Kazuhisa Kitamura
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
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 filed Critical Daihatsu Motor Co Ltd
Priority to JP13608278A priority Critical patent/JPS5928732B2/en
Publication of JPS5564112A publication Critical patent/JPS5564112A/en
Publication of JPS5928732B2 publication Critical patent/JPS5928732B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To provide a secondary air supplying system for internal combustion engine, in which an air suction pipe connected between a check valve and a portion of exhaust system employs a diameter-different pipe having a larger diameter at its portion connected to the exhaust system, so that amount of secondary air supplied to the exhaust system can be increased, and at the same time, installation space of the apparatus can be reduced since the radius of curvature of the air suction pipe can be rendered small.
CONSTITUTION: In an arrangement for supplying secondary air to the exhaust system by opening, by use of pulsation of exhaust gas in the exhaust system, a check valve 10 disposed at one end of air suction pipe 9 connected to exhaust system 2, 3, 4, said pipe 9 is constituted by a first pipe portion 9' connected at one end to front pipe 4 and a second pipe portion 9" provided at one end with a check valve 10. Here, the pipe portion 9' on the side of front pipe 4 is shaped to have a larger inner diameter (d1), whereas pipe portion 9" on the side of check valve 10 is shaped to have a smaller inner diameter (d2). With such an arrangement, pressure wave in front pipe 4 can be transmitted to the portion of check valve 10 with low attenuation, so that amount of secondary air supplied to the exhaust system can be increased.
COPYRIGHT: (C)1980,JPO&Japio
JP13608278A 1978-11-04 1978-11-04 Secondary air supply device in internal combustion engine Expired JPS5928732B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13608278A JPS5928732B2 (en) 1978-11-04 1978-11-04 Secondary air supply device in internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13608278A JPS5928732B2 (en) 1978-11-04 1978-11-04 Secondary air supply device in internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5564112A true JPS5564112A (en) 1980-05-14
JPS5928732B2 JPS5928732B2 (en) 1984-07-16

Family

ID=15166817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13608278A Expired JPS5928732B2 (en) 1978-11-04 1978-11-04 Secondary air supply device in internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5928732B2 (en)

Also Published As

Publication number Publication date
JPS5928732B2 (en) 1984-07-16

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