GB1462997A - Four-stroke spark ignition internal-combustion engine - Google Patents

Four-stroke spark ignition internal-combustion engine

Info

Publication number
GB1462997A
GB1462997A GB1582774A GB1582774A GB1462997A GB 1462997 A GB1462997 A GB 1462997A GB 1582774 A GB1582774 A GB 1582774A GB 1582774 A GB1582774 A GB 1582774A GB 1462997 A GB1462997 A GB 1462997A
Authority
GB
United Kingdom
Prior art keywords
recess
passage
inlet
intake passage
curved
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.)
Expired
Application number
GB1582774A
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha 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
Priority claimed from JP4173873A external-priority patent/JPS5310201B2/ja
Priority claimed from JP13357173A external-priority patent/JPS5083607A/ja
Priority claimed from JP48138772A external-priority patent/JPS5759894B2/ja
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of GB1462997A publication Critical patent/GB1462997A/en
Expired 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
    • F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
    • F02B19/1066—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber having an inlet and an outlet port and with two distinct intake conduits or with one intake conduit in which the heavier fuel particles are separated from the main stream, e.g. by gravitational forces
    • 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
    • F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
    • F02B19/1028—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC
    • 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/12—Engines characterised by precombustion chambers with positive ignition
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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

1462997 IC engines - pre-combustion chambers YAMAHA HATSUDOKI KK 10 April 1974 [12 April 1973 30 Nov 1973 14 Dec 1973] 15827/74 Heading F1B The invention relates to a four-stroke I.C. engine of the spark ignition type comprising a piston and cylinder assembly, an intake passage controlled by a mushroom-shaped intake valve, an exhaust passage controlled by a mushroomshaped exhaust valve, the intake passage being curved in the vicinity of the intake port, the cavity in the cylinder head which defines in part the combustion chamber being formed with a pocket or recess in the region of and open to the associated intake port corresponding to the outer side of the curved portion of the intake passage, a spark-plug being located in the recess. The engine shown in Figs. 1, 2, 3 comprises an inlet passage 6 for air/fuel mixture, the inlet port 7 being controlled by a valve 10, an exhaust passage 8 the exhaust port 9 of which is controlled by a valve 11, the combustion space 5 being defined in part by a cavity 3A formed in the cylinder head 3. The intake passage 6 is of curved form and a recess 12 is formed in the wall of the cavity 3A of the cylinder head being located adjacent the intake passage and port 7; the recess is defined at its lower side by a wall 14, and having an inlet side 13A and an outlet side 13B; a sparking plug 15 is located with its points in the recess. The arrangement is such that when a weak fuel/air mixture is supplied through the curved intake passage 6, fuel droplets tend to be flung outwardly towards the outer wall of the passage so that a rich mixture is supplied into the recess for ignition by the sparkplug. In a further embodiment a web (16) extends across the recess between the inlet and outlet openings 13A, 13B. The engine shown in Fig. 6 is of the side-valve type, the recess 12 in the cylinder head 3 being defined by an inner wall 14 and by a web 16 and having an inlet 13A and an outlet 13B. The intake passage 6 is of curved form the fuel droplets being flung towards the outer wall of the passage so that a rich fuel/air mixture passes into the recess 12 for ignition by the spark-plug 15. In Fig. 9 the recess 12 is again defined by a lower wall 14, a rich mixture flowing into the recess from the curved intake passage 6 as before; a further intake passage 18 controlled by an inlet valve 19 opens into the recess 12 adjacent the spark-plug 15, a rich mixture being supplied through the passage 18. In Fig. 11 the recess 12 is defined by a lower wall 14 and a web 16 and has an inlet 13A through which a rich fuel/air mixture enters from the curved inlet passage 6, also an outlet 13B. An additional spark-plug is provided diametrally opposite the plug 15.
GB1582774A 1973-04-12 1974-04-10 Four-stroke spark ignition internal-combustion engine Expired GB1462997A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4173873A JPS5310201B2 (en) 1973-04-12 1973-04-12
JP13357173A JPS5083607A (en) 1973-11-30 1973-11-30
JP48138772A JPS5759894B2 (en) 1973-12-14 1973-12-14

Publications (1)

Publication Number Publication Date
GB1462997A true GB1462997A (en) 1977-01-26

Family

ID=27290934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1582774A Expired GB1462997A (en) 1973-04-12 1974-04-10 Four-stroke spark ignition internal-combustion engine

Country Status (2)

Country Link
DE (1) DE2417838C3 (en)
GB (1) GB1462997A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224608A (en) * 1975-08-16 1977-02-24 Daihatsu Motor Co Ltd Single mixed gas type gasoline engine

Also Published As

Publication number Publication date
DE2417838B2 (en) 1978-03-23
DE2417838A1 (en) 1974-10-31
DE2417838C3 (en) 1978-11-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee