JPS57165628A - Spark-ignition internal combustion engine - Google Patents

Spark-ignition internal combustion engine

Info

Publication number
JPS57165628A
JPS57165628A JP56050623A JP5062381A JPS57165628A JP S57165628 A JPS57165628 A JP S57165628A JP 56050623 A JP56050623 A JP 56050623A JP 5062381 A JP5062381 A JP 5062381A JP S57165628 A JPS57165628 A JP S57165628A
Authority
JP
Japan
Prior art keywords
intake valve
wall surface
spark
center
recess
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
JP56050623A
Other languages
Japanese (ja)
Inventor
Hiroshi Nakagawa
Shunichi Mori
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP56050623A priority Critical patent/JPS57165628A/en
Publication of JPS57165628A publication Critical patent/JPS57165628A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

PURPOSE:To improve the performance of a spark-ignition internal combustion engine, by providing a crescent recess and a wall surface on the inside of the cylinder head around the intake valve seat to cause the mixture to flow toward the exhaust valve to effectuate complete combustion after ignition to reduce the fluctuation in the cycle. CONSTITUTION:A recess 32 and a wall surface 33 are provided on the inside of a cylinder head 1 around an intake valve seat 41. The angle thetaj between the line extending from the center Oj of an intake valve 4 to that Oe of an exhaust valve 6 and the line extending from the center Oj to the point OR located on the outer edge of the recess 32 and most distant of all the points on the edge from the center Oj of the intake valve is set at 45 to 135 deg. at the face of a wall surface 31 in which a spark plug 7 is provided. Since the opening around the intake valve 4 has a larger area near the wall surface 31 than near the opposite side, the mixture flows to a region which is located near the exhaust valve 6 and has a relatively high temperature. For that reason, the evaporation of fuel is facilitated. The combustion after ignition is thus made complete to reduce the fluctuation in the cycle to improve the performance.
JP56050623A 1981-04-06 1981-04-06 Spark-ignition internal combustion engine Pending JPS57165628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56050623A JPS57165628A (en) 1981-04-06 1981-04-06 Spark-ignition internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56050623A JPS57165628A (en) 1981-04-06 1981-04-06 Spark-ignition internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57165628A true JPS57165628A (en) 1982-10-12

Family

ID=12864099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56050623A Pending JPS57165628A (en) 1981-04-06 1981-04-06 Spark-ignition internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57165628A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484119A (en) * 1977-12-19 1979-07-04 Mitsubishi Heavy Ind Ltd Cylinder head for internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484119A (en) * 1977-12-19 1979-07-04 Mitsubishi Heavy Ind Ltd Cylinder head for internal combustion engine

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