A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC UNIT
PROBLEM TO BE SOLVED: To provide a hydraulic unit that prevents excess load from being applied to an engine to improve fuel consumption without adversely affecting working, even when automatic reproduction of the DPF is started during working.SOLUTION: A hydraulic pump 17 for DPF reproduction is provided separately with hydraulic pumps 12-16 for working, the discharge side of the hydraulic pump for DPF reproduction is connected to an oil tank 20 through an electromagnetic proportional relief valve 22 and an oil cooler 19, and provided is relief valve control means which adjusts the setting pressure of the electromagnetic proportional relief valve on the basis of signals from an engine controller.
【課題】作業中にＤＰＦの自動再生が始まった場合でも、作業に悪影響を与えることがなく、エンジンに余分な負荷が掛からないようにして燃費の向上も図ることができる油圧ユニットを提供する。【解決手段】作業用油圧ポンプ１２〜１６とは別にＤＰＦ再生用油圧ポンプ１７を設け、該ＤＰＦ再生用油圧ポンプの吐出側を、電磁比例リリーフバルブ２２及びオイルクーラ１９を介してオイルタンク２０に接続するとともに、エンジン制御器からの信号に基づいて電磁比例リリーフバルブの設定圧力を調節するリリーフバルブ制御手段を設ける。【選択図】図１
HYDRAULIC UNIT
PROBLEM TO BE SOLVED: To provide a hydraulic unit that prevents excess load from being applied to an engine to improve fuel consumption without adversely affecting working, even when automatic reproduction of the DPF is started during working.SOLUTION: A hydraulic pump 17 for DPF reproduction is provided separately with hydraulic pumps 12-16 for working, the discharge side of the hydraulic pump for DPF reproduction is connected to an oil tank 20 through an electromagnetic proportional relief valve 22 and an oil cooler 19, and provided is relief valve control means which adjusts the setting pressure of the electromagnetic proportional relief valve on the basis of signals from an engine controller.
【課題】作業中にＤＰＦの自動再生が始まった場合でも、作業に悪影響を与えることがなく、エンジンに余分な負荷が掛からないようにして燃費の向上も図ることができる油圧ユニットを提供する。【解決手段】作業用油圧ポンプ１２〜１６とは別にＤＰＦ再生用油圧ポンプ１７を設け、該ＤＰＦ再生用油圧ポンプの吐出側を、電磁比例リリーフバルブ２２及びオイルクーラ１９を介してオイルタンク２０に接続するとともに、エンジン制御器からの信号に基づいて電磁比例リリーフバルブの設定圧力を調節するリリーフバルブ制御手段を設ける。【選択図】図１
HYDRAULIC UNIT
油圧ユニット
TOMITA YASUKIMI (author) / KURIMOTO SHINJI (author) / URANO AKITOSHI (author)
2015-08-03
Patent
Electronic Resource
Japanese
IPC:
F01N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
,
Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein
/
E02F
Baggern
,
DREDGING
/
F02D
CONTROLLING COMBUSTION ENGINES
,
Steuern oder Regeln von Brennkraftmaschinen
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein