JPS5554623A - Combustion chamber of direct-injection type internal combustion engine - Google Patents

Combustion chamber of direct-injection type internal combustion engine

Info

Publication number
JPS5554623A
JPS5554623A JP12787778A JP12787778A JPS5554623A JP S5554623 A JPS5554623 A JP S5554623A JP 12787778 A JP12787778 A JP 12787778A JP 12787778 A JP12787778 A JP 12787778A JP S5554623 A JPS5554623 A JP S5554623A
Authority
JP
Japan
Prior art keywords
combustion chamber
recesses
cavity
direct
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
JP12787778A
Other languages
Japanese (ja)
Inventor
Yoshiyasu Tanaka
Keiji Taniguchi
Satoru Takeuchi
Juji Koyanagi
Yoshio Koshikawa
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.)
UD Trucks Corp
Original Assignee
UD Trucks Corp
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 UD Trucks Corp filed Critical UD Trucks Corp
Priority to JP12787778A priority Critical patent/JPS5554623A/en
Publication of JPS5554623A publication Critical patent/JPS5554623A/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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

PURPOSE: To provide an arrangement for combustion chamber of direct-injection type internal combustion engine, i.e., diesel engine, in which a combustion chamber is formed at the top of piston and a plurality of recesses are formed in the lower peripheral wall portion of said combustion chamber, so as to mix fuel and air effectively in these recesses and thereby to improve combustibility of mixture.
CONSTITUTION: Cavity 32 constituting a combustion chamber is formed at the top of piston 35 and a conical projection 31 is formed centrally on the bottom of this cavity 32. Further, a plurality of recesses 33 machined into a small circular form are formed in the peripheral wall of the cavity 32. With such an arrangement, fuel is ejected from fuel injection nozzle 34 into these recesses 33, so that swirl S2 is produced in the recesses. This swirl S2 is different from swirl S1 produced in cavity 32, so that turbulence is produced in the combustion chamber and therefore mixing of fuel and air in the combustion chamber can be promoted.
COPYRIGHT: (C)1980,JPO&Japio
JP12787778A 1978-10-19 1978-10-19 Combustion chamber of direct-injection type internal combustion engine Pending JPS5554623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12787778A JPS5554623A (en) 1978-10-19 1978-10-19 Combustion chamber of direct-injection type internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12787778A JPS5554623A (en) 1978-10-19 1978-10-19 Combustion chamber of direct-injection type internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5554623A true JPS5554623A (en) 1980-04-22

Family

ID=14970844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12787778A Pending JPS5554623A (en) 1978-10-19 1978-10-19 Combustion chamber of direct-injection type internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5554623A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58222915A (en) * 1982-06-21 1983-12-24 Yanmar Diesel Engine Co Ltd Combustion chamber of direct-injection internal-combustion engine
JPS5913631U (en) * 1982-07-16 1984-01-27 三菱自動車工業株式会社 Diesel engine combustion chamber
JPS5960027A (en) * 1982-09-30 1984-04-05 Hino Motors Ltd Combustion chamber of diesel engine
JPS5971924U (en) * 1982-10-21 1984-05-16 三菱自動車工業株式会社 Diesel engine combustion chamber
JPS60501667A (en) * 1983-06-28 1985-10-03 パ−キンス　エンジンス　グル−プ　リミテツド internal combustion engine piston

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264515A (en) * 1975-11-25 1977-05-28 Komatsu Ltd Combustion chamber of engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264515A (en) * 1975-11-25 1977-05-28 Komatsu Ltd Combustion chamber of engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58222915A (en) * 1982-06-21 1983-12-24 Yanmar Diesel Engine Co Ltd Combustion chamber of direct-injection internal-combustion engine
JPS5913631U (en) * 1982-07-16 1984-01-27 三菱自動車工業株式会社 Diesel engine combustion chamber
JPS5960027A (en) * 1982-09-30 1984-04-05 Hino Motors Ltd Combustion chamber of diesel engine
JPS5971924U (en) * 1982-10-21 1984-05-16 三菱自動車工業株式会社 Diesel engine combustion chamber
JPS6339378Y2 (en) * 1982-10-21 1988-10-17
JPS60501667A (en) * 1983-06-28 1985-10-03 パ−キンス　エンジンス　グル−プ　リミテツド internal combustion engine piston

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