JPS58102738U - Diesel engine noise reduction device - Google Patents

Diesel engine noise reduction device

Info

Publication number
JPS58102738U
JPS58102738U JP19497381U JP19497381U JPS58102738U JP S58102738 U JPS58102738 U JP S58102738U JP 19497381 U JP19497381 U JP 19497381U JP 19497381 U JP19497381 U JP 19497381U JP S58102738 U JPS58102738 U JP S58102738U
Authority
JP
Japan
Prior art keywords
fuel
diesel engine
output
auxiliary
noise reduction
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.)
Granted
Application number
JP19497381U
Other languages
Japanese (ja)
Other versions
JPH0143509Y2 (en
Inventor
木暮　敏彦
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 JP19497381U priority Critical patent/JPS58102738U/en
Publication of JPS58102738U publication Critical patent/JPS58102738U/en
Application granted granted Critical
Publication of JPH0143509Y2 publication Critical patent/JPH0143509Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は燃料噴射量即ちエンジン負荷と燃焼騒音の相関
関係を示すグラフ、第２図はコエンジン回転速度とエン
ジン騒音の相関関係を示すグラフ、第３図は本考案にか
かる補助燃料供給装置の作動　−領域を示すグラフであ
って該蛸域における加速運転時にのみ補助燃料供給がな
されることを示し、第４図は本考案の一実施例を示す制
御系統図である。 １・・・ディーゼルエンジン、３・・・主燃料噴射弁５
・・・補助燃料噴射弁（補助燃料供給装置）、１０・・
・補助燃料供給通路、１１・・・電磁開閉弁、１２・・
・補助噴射弁制御ユニット。Fig. 1 is a graph showing the correlation between fuel injection amount, that is, engine load, and combustion noise, Fig. 2 is a graph showing the correlation between co-engine rotation speed and engine noise, and Fig. 3 is an auxiliary fuel supply system according to the present invention. FIG. 4 is a graph showing the operation region of the engine, and shows that auxiliary fuel is supplied only during acceleration operation in the region of operation. FIG. 4 is a control system diagram showing an embodiment of the present invention. 1...Diesel engine, 3...Main fuel injection valve 5
...Auxiliary fuel injection valve (auxiliary fuel supply device), 10...
・Auxiliary fuel supply passage, 11... Solenoid on-off valve, 12...
・Auxiliary injection valve control unit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 燃焼室内に出力用燃料を噴射する主燃料噴射弁と、フユ
ーミゲーション或いはパイロット噴射等出力用燃料の噴
射に先立って補助燃料を供給し出力用燃料の着火性を助
ける補助燃料供給装置とを備えたディーゼルエンジンに
おいて、エンジン運転状態検出装置と、該検出装置の出
力に基づき前記補助燃料供給装置をエンジンの所定値以
上の高速高負荷領域でかつエンジン加速時に作動させる
、補助噴射弁制御ユニットと、を設けたことを特徴とす
るディーゼルエンジンの騒音低減装置。Equipped with a main fuel injection valve that injects output fuel into the combustion chamber, and an auxiliary fuel supply device that supplies auxiliary fuel prior to injection of output fuel such as fumigation or pilot injection to help the ignitability of output fuel. In a diesel engine, an engine operating state detection device; and an auxiliary injection valve control unit that operates the auxiliary fuel supply device based on the output of the detection device in a high-speed, high-load region of the engine equal to or higher than a predetermined value and during engine acceleration; A diesel engine noise reduction device characterized by being provided with.
JP19497381U 1981-12-29 1981-12-29 Diesel engine noise reduction device Granted JPS58102738U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19497381U JPS58102738U (en) 1981-12-29 1981-12-29 Diesel engine noise reduction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19497381U JPS58102738U (en) 1981-12-29 1981-12-29 Diesel engine noise reduction device

Publications (2)

Publication Number Publication Date
JPS58102738U true JPS58102738U (en) 1983-07-13
JPH0143509Y2 JPH0143509Y2 (en) 1989-12-18

Family

ID=30108268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19497381U Granted JPS58102738U (en) 1981-12-29 1981-12-29 Diesel engine noise reduction device

Country Status (1)

Country Link
JP (1) JPS58102738U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028243U (en) * 1983-08-01 1985-02-26 日産自動車株式会社 Direct cylinder injection engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5047035A (en) * 1972-11-01 1975-04-26
JPS526413A (en) * 1975-07-07 1977-01-18 Nippon Telegr & Teleph Corp <Ntt> Colour picture recorder and reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5047035A (en) * 1972-11-01 1975-04-26
JPS526413A (en) * 1975-07-07 1977-01-18 Nippon Telegr & Teleph Corp <Ntt> Colour picture recorder and reproducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028243U (en) * 1983-08-01 1985-02-26 日産自動車株式会社 Direct cylinder injection engine

Also Published As

Publication number Publication date
JPH0143509Y2 (en) 1989-12-18

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