JPS54158516A - Protection device for internal combution engine - Google Patents

Protection device for internal combution engine

Info

Publication number
JPS54158516A
JPS54158516A JP6699178A JP6699178A JPS54158516A JP S54158516 A JPS54158516 A JP S54158516A JP 6699178 A JP6699178 A JP 6699178A JP 6699178 A JP6699178 A JP 6699178A JP S54158516 A JPS54158516 A JP S54158516A
Authority
JP
Japan
Prior art keywords
air
purifying device
secondary air
output
fuel
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
JP6699178A
Other languages
Japanese (ja)
Inventor
Yasuo Yamada
Toshio Kondo
Kazuo Kajita
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP6699178A priority Critical patent/JPS54158516A/en
Publication of JPS54158516A publication Critical patent/JPS54158516A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To protect a purifying device, by cooling a discharge gas purifying device in such a manner that feeds secondary air to a part just in front of a catalyst if an accident fire is detected.
CONSTITUTION: A conventional air-fuel ratio sensor 11 judges that an air-fuel ratio is lean in the case of a wrong ignition, and controls a fuel volume so that it will be corrected to a dense side. A control signal of a level "1", which indicates the increase in a fuel for the duration of a given delay time T, is output from a control 10, and as a result an output signal Vo is output as the level "1" which supplies secondary air. Then a negative pressure switching valve 9 and a secondary air control valve 8 are worked, and the air is fed to the upstream side of a catalyst 6, and thus, a discharge gas purifying device may be cooled.
COPYRIGHT: (C)1979,JPO&Japio
JP6699178A 1978-06-02 1978-06-02 Protection device for internal combution engine Pending JPS54158516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6699178A JPS54158516A (en) 1978-06-02 1978-06-02 Protection device for internal combution engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6699178A JPS54158516A (en) 1978-06-02 1978-06-02 Protection device for internal combution engine

Publications (1)

Publication Number Publication Date
JPS54158516A true JPS54158516A (en) 1979-12-14

Family

ID=13331976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6699178A Pending JPS54158516A (en) 1978-06-02 1978-06-02 Protection device for internal combution engine

Country Status (1)

Country Link
JP (1) JPS54158516A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517575A (en) * 1981-04-20 1985-05-14 Matsushita Electric Industrial Co., Ltd. Recording paper clamping apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517575A (en) * 1981-04-20 1985-05-14 Matsushita Electric Industrial Co., Ltd. Recording paper clamping apparatus

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