JPS57126533A - Power unit device - Google Patents

Power unit device

Info

Publication number
JPS57126533A
JPS57126533A JP56011323A JP1132381A JPS57126533A JP S57126533 A JPS57126533 A JP S57126533A JP 56011323 A JP56011323 A JP 56011323A JP 1132381 A JP1132381 A JP 1132381A JP S57126533 A JPS57126533 A JP S57126533A
Authority
JP
Japan
Prior art keywords
pump
injection pump
fuel injection
oil pressure
reacts
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
JP56011323A
Other languages
Japanese (ja)
Inventor
Masatoshi Okano
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP56011323A priority Critical patent/JPS57126533A/en
Publication of JPS57126533A publication Critical patent/JPS57126533A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To operate an diesel engine equipped with a Bosch type fuel injection pump in good working condition even at various altitude, by connecting a control link, which reacts on the expansion of a bellows type atmosphere pressure detector, to the injection pump. CONSTITUTION:In a power unit device, Bosch type fuel injection pump 1 is linked with a volume-variable oil pressure pump 22. A control link 36, which reacts on the expansion of a bellows type atmospheric pressure detector 24, is connected to both a control rack 15 of an injection pump 1 and a spring regulating link 35 for a pressure reducing valve 21. As the atmospheric pressure goes down, the amount of a fuel injection is decreased via a control rack 15, while the flow rate of a volume-variable oil pressure pump 22 is also decreased. With these contrivances, a diesel engine can be operated in good condition at various altitude without adjusting an oil pressure pump, and the problems on exhaust gas as well as the output drop can be prevented.
JP56011323A 1981-01-27 1981-01-27 Power unit device Pending JPS57126533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56011323A JPS57126533A (en) 1981-01-27 1981-01-27 Power unit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56011323A JPS57126533A (en) 1981-01-27 1981-01-27 Power unit device

Publications (1)

Publication Number Publication Date
JPS57126533A true JPS57126533A (en) 1982-08-06

Family

ID=11774809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56011323A Pending JPS57126533A (en) 1981-01-27 1981-01-27 Power unit device

Country Status (1)

Country Link
JP (1) JPS57126533A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937286A (en) * 1982-08-25 1984-02-29 Hitachi Constr Mach Co Ltd Control device for hydraulic pump
JPS59123640U (en) * 1983-02-10 1984-08-20 株式会社小松製作所 Diesel engine horsepower control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937286A (en) * 1982-08-25 1984-02-29 Hitachi Constr Mach Co Ltd Control device for hydraulic pump
JPH0543876B2 (en) * 1982-08-25 1993-07-02 Hitachi Construction Machinery
JPS59123640U (en) * 1983-02-10 1984-08-20 株式会社小松製作所 Diesel engine horsepower control device
JPH0318675Y2 (en) * 1983-02-10 1991-04-19

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