JPS5578118A - Valve seat for internal combustion engine - Google Patents

Valve seat for internal combustion engine

Info

Publication number
JPS5578118A
JPS5578118A JP15069778A JP15069778A JPS5578118A JP S5578118 A JPS5578118 A JP S5578118A JP 15069778 A JP15069778 A JP 15069778A JP 15069778 A JP15069778 A JP 15069778A JP S5578118 A JPS5578118 A JP S5578118A
Authority
JP
Japan
Prior art keywords
valve seat
exhaust valve
exhaust
contacted
internal combustion
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
JP15069778A
Other languages
Japanese (ja)
Inventor
Takeshi Nakamura
Tadashi Nagai
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP15069778A priority Critical patent/JPS5578118A/en
Publication of JPS5578118A publication Critical patent/JPS5578118A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To enhance the cooling effect of a valve seat for an internal combustion engine and prevent abnormal combustion in a cylinder at high load operating time by using material having higher thermal conductivity than the portion making contact with an exhaust valve at the portion not contacted with the exhaust valve at the exhaust valve seat and making partial contact with the cylinder head. CONSTITUTION:Material having larger thermal conductivity than the other portion 12 of an exhaust valve seat 4 such as, for example copper is formed on the portion 11 not making contact with the exhaust gas flowing through an exhaust port 7 at the outer peripheral portion of the exhaust valve seat 4. The portion 11 is closely contacted with the portion 12 and closedly contacted at its opposite side surface with the cylinder head 1. The head 1 is cooled by the coolant flowing through a passage 6, and the exhaust valve 3 is closely contacted with the valve seat 4. According to this configuration, the valve seat 4 can preferably be dissipated by heat at the portion 11 to thereby reduce the temperature thereof. The exhaust valve 3 can also cool the heat received from the combustion gas via the valve seat 4 at the expanding and exhausting steps of the engine.
JP15069778A 1978-12-06 1978-12-06 Valve seat for internal combustion engine Pending JPS5578118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15069778A JPS5578118A (en) 1978-12-06 1978-12-06 Valve seat for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15069778A JPS5578118A (en) 1978-12-06 1978-12-06 Valve seat for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5578118A true JPS5578118A (en) 1980-06-12

Family

ID=15502446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15069778A Pending JPS5578118A (en) 1978-12-06 1978-12-06 Valve seat for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5578118A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015014262A (en) * 2013-07-05 2015-01-22 株式会社リケン Valve seat and manufacturing method thereof
CN112943404A (en) * 2021-02-07 2021-06-11 浙江吉利控股集团有限公司 Engine valve seat ring and methanol engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507918A (en) * 1973-05-30 1975-01-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507918A (en) * 1973-05-30 1975-01-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015014262A (en) * 2013-07-05 2015-01-22 株式会社リケン Valve seat and manufacturing method thereof
CN112943404A (en) * 2021-02-07 2021-06-11 浙江吉利控股集团有限公司 Engine valve seat ring and methanol engine

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