JPS5749061A - Fuel injection pump - Google Patents

Fuel injection pump

Info

Publication number
JPS5749061A
JPS5749061A JP12370780A JP12370780A JPS5749061A JP S5749061 A JPS5749061 A JP S5749061A JP 12370780 A JP12370780 A JP 12370780A JP 12370780 A JP12370780 A JP 12370780A JP S5749061 A JPS5749061 A JP S5749061A
Authority
JP
Japan
Prior art keywords
injection
fuel
pressure
reduced
amount
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
JP12370780A
Other languages
Japanese (ja)
Inventor
Nobuji Eguchi
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.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
Hino Jidosha Kogyo KK
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 Hino Motors Ltd, Hino Jidosha Kogyo KK filed Critical Hino Motors Ltd
Priority to JP12370780A priority Critical patent/JPS5749061A/en
Publication of JPS5749061A publication Critical patent/JPS5749061A/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

Landscapes

  • Fuel-Injection Apparatus (AREA)

Abstract

PURPOSE: To reduce the amount of NO generation in a direct injection type engine by a method wherein the pressure in an initial injection prior to high pressure injection is reduced by fitting a buffer-use depression on top of a plunger in a fuel injection pump.
CONSTITUTION: When the top end of a plunger 4 of a fuel injection pump is higher than a fuel support port 3 in an exhaust phase, fuel over the top end pushes up a delivery valve 5 and extrudes fuel into an injection tube to eject. With this structure, an initial injection pressure is decreased by introducing fuel into a depression 41 at the initial stage of exhaust process to restrict the amount of fuel injected into a combustion chamber. By this technique, an initial injection pressure can be reduced as much as possible even on gaining a high pressure injection, so that the amount of NO generation can be reduced.
COPYRIGHT: (C)1982,JPO&Japio
JP12370780A 1980-09-06 1980-09-06 Fuel injection pump Pending JPS5749061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12370780A JPS5749061A (en) 1980-09-06 1980-09-06 Fuel injection pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12370780A JPS5749061A (en) 1980-09-06 1980-09-06 Fuel injection pump

Publications (1)

Publication Number Publication Date
JPS5749061A true JPS5749061A (en) 1982-03-20

Family

ID=14867348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12370780A Pending JPS5749061A (en) 1980-09-06 1980-09-06 Fuel injection pump

Country Status (1)

Country Link
JP (1) JPS5749061A (en)

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