KR950033038A - Piston pipe structure of multi-valve engine - Google Patents

Piston pipe structure of multi-valve engine Download PDF

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Publication number
KR950033038A
KR950033038A KR1019950003849A KR19950003849A KR950033038A KR 950033038 A KR950033038 A KR 950033038A KR 1019950003849 A KR1019950003849 A KR 1019950003849A KR 19950003849 A KR19950003849 A KR 19950003849A KR 950033038 A KR950033038 A KR 950033038A
Authority
KR
South Korea
Prior art keywords
valve
piston
piston body
arc portion
valve discharge
Prior art date
Application number
KR1019950003849A
Other languages
Korean (ko)
Inventor
야스오 후시다
Original Assignee
야스모로 도시오
가부시키가이샤 유니시아 젝스
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 야스모로 도시오, 가부시키가이샤 유니시아 젝스 filed Critical 야스모로 도시오
Publication of KR950033038A publication Critical patent/KR950033038A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • 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)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

본 발명은 미연소 가스의 체류개소를 없애고 연소효율의 향상이 도모될 수 있는 다밸브식 엔진의 피스톤 관련 구조를 제공한다.The present invention provides a piston-related structure of a multi-valve engine that can eliminate the retention point of unburned gas and improve the combustion efficiency.

피스톤 본체(1)의 관면(1a)에, 이 피스톤 본체(1)의 둘레방향으로 서로 이웃하는 흡기 밸브(4)용의 밸브배출홈(5)과 배기 밸브(6)용의 밸브 배출홈(7)을 형성하고, 이 양 밸브 배출홈(6), (7)을 연통홈(8)을 통하여 연설하고, 피스톤 본체(1)의 외주쪽에 원호부(9a)를 가진 활모양으로 개구하는 오목부(9)를 구성하고, 이 오목부(9)의 원호부(9a)의 중심을 지나서 피스톤 본체(1)의 직경방향에 따른 단면 형상을 대략 V자 모양으로 형성하는 동시에, 오목부(9)의 바닥면부를 평탄면(93)으로 형성하였다.The valve discharge groove 5 for the intake valve 4 and the valve discharge groove for the exhaust valve 6 adjacent to each other in the circumferential direction of the piston body 1 on the pipe face 1a of the piston body 1 ( 7) to form a concave which is formed by extending the two valve discharge grooves 6 and 7 through the communication groove 8 and opening the bow with an arc portion 9a on the outer circumferential side of the piston body 1; The section 9 is formed, and the cross section along the radial direction of the piston main body 1 is formed into a substantially V-shape while passing through the center of the arc portion 9a of the recess 9, and the recess 9 The bottom surface part of) was formed into the flat surface 9 3 .

Description

다 밸브식 엔진의 피스톤 관면구조Piston pipe structure of multi-valve engine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도의 (1)은 본 발명의 1실시예가 되는 다밸브식 엔지의 피스톤 관면구조를 나타내는 평면도, (2)는 (1)의 다면도, 제2도는 제1도(2)에 나타난 요부의 확대도, 제3도의 (1)종래예의 다밸브식 엔진의 피스톤관면 구조를 나타내는 평면도, (2)는 (1)의 단면도.FIG. 1 (1) is a plan view showing the piston tube structure of a multi-valve engine according to an embodiment of the present invention, (2) is a side view of (1), and FIG. 2 is a main portion shown in FIG. 3 is a plan view showing a piston tube structure of the conventional multi-valve engine of FIG. 3, (2) is a cross-sectional view of (1).

Claims (1)

피스톤 본체의 관면에, 이 피스톤 본체의 둘레방향에서 서로 이웃하는 흡기 밸브용의 밸브 배출홈과 배기 밸브용의 밸브 배출홈을 형성하고, 이 양밸브 배출홈을 연통홈을 통하여 연설하며, 상기 피스톤 본체의 외주측에 원호부를 가진 활모양으로 개구하는 오목부를 구성하고, 이 오목부의 상기 원호부의 중심을 지나서 상기 피스톤 본체의 직경 방향에 따른 단면 형상을 대략 V자 모양으로 형성하는 동시에, 상기 오목부의 바닥면부를 평탄면으로 형성한 것을 특징으로 하는 다밸브식 엔진의 피스톤 관면 구조.On the tubular surface of the piston body, a valve discharge groove for the intake valve and an exhaust valve for the intake valve which are adjacent to each other in the circumferential direction of the piston body are formed, and the two valve discharge grooves are delivered through the communication groove, and the piston A concave portion that opens in a bow shape having an arc portion on the outer circumferential side of the main body, forms a cross-sectional shape along the radial direction of the piston body in a substantially V-shape through the center of the arc portion of the concave portion, and at the same time, Piston tube structure of a multi-valve engine, characterized in that the bottom surface portion is formed into a flat surface. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950003849A 1994-02-28 1995-02-27 Piston pipe structure of multi-valve engine KR950033038A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP94-54698 1994-02-28
JP6054698A JPH07243327A (en) 1994-02-28 1994-02-28 Piston crown surface structure of multivalve engine

Publications (1)

Publication Number Publication Date
KR950033038A true KR950033038A (en) 1995-12-22

Family

ID=12978031

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950003849A KR950033038A (en) 1994-02-28 1995-02-27 Piston pipe structure of multi-valve engine

Country Status (3)

Country Link
JP (1) JPH07243327A (en)
KR (1) KR950033038A (en)
CN (1) CN1115003A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3256671B2 (en) * 1997-08-01 2002-02-12 本田技研工業株式会社 Internal combustion engine piston
DE102007027787A1 (en) * 2007-06-16 2008-12-18 GM Global Technology Operations, Inc., Detroit Internal combustion engine with charge turbulence
CN103423015A (en) * 2012-05-15 2013-12-04 安徽华菱汽车有限公司 Internal combustion engine and piston thereof
US10060387B2 (en) * 2016-06-22 2018-08-28 Ford Global Technologies, Llc Multi-step combustion chamber with multi-step cylinder head
US11371466B2 (en) * 2019-12-17 2022-06-28 Caterpillar Inc. Piston for internal combustion engine having valve pocket step for slowing combustion gas flow

Also Published As

Publication number Publication date
JPH07243327A (en) 1995-09-19
CN1115003A (en) 1996-01-17

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E902 Notification of reason for refusal
E601 Decision to refuse application