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    • 3. 发明公开
    • 건설기계용 냉각시스템 및 건설기계
    • 建筑机械冷却系统
    • KR1020140084465A
    • 2014-07-07
    • KR1020120153569
    • 2012-12-26
    • 두산인프라코어 주식회사
    • 전승준이영재김정호
    • E02F9/00F01P1/00
    • F01P7/02E02F9/00F01P5/02F01P2001/005F01P2025/40F01P2025/42F01P2025/64F01P2050/22
    • The present invention relates to a cooling system for construction equipment. According to the present invention, the cooling system for construction equipment comprises a maximum fan RPM selecting unit (10) for estimating a first maximum fan RPM necessary for cooling in the cooling system; a minimum fan RPM selecting unit (30) for comparing a second maximum fan RPM with the first maximum fan RPM and selecting, as a minimum fan RPM, the lower one of the first and second maximum fan RPMs; a fan RPM difference calculating unit (32) calculating a difference between the actual fan RPM (50) and the minimum fan RPM; and a PID control unit (40) controlling an electric fan clutch so that the actual fan RPM (50) reaches the minimum fan RPM by performing PID control on the fan RPM difference.
    • 本发明涉及一种建筑设备的冷却系统。 根据本发明,用于建筑设备的冷却系统包括用于估计在冷却系统中冷却所需的第一最大风扇转速的最大风扇转速选择单元(10) 最小风扇RPM选择单元(30),用于将第二最大风扇RPM与第一最大风扇RPM进行比较,并且选择第一和第二最大风扇RPM的下一个作为最小风扇RPM; 计算实际风扇RPM(50)和最小风扇RPM之间的差的风扇转速差分计算单元(32) 以及PID控制单元(40),其通过对风扇RPM差进行PID控制来控制电动风扇离合器,使得实际风扇RPM(50)达到最小风扇RPM。
    • 5. 发明公开
    • 바이오디젤 함유량에 따른 디젤 엔진 제어 장치 및 방법
    • 根据生物柴油含量控制柴油发动机的设备和方法
    • KR1020140083109A
    • 2014-07-04
    • KR1020120151815
    • 2012-12-24
    • 두산인프라코어 주식회사
    • 김정호고영경한영덕신승협
    • F02D41/14F02D19/08F02M37/00
    • F02D41/1438F02D19/0652F02D41/1454F02M37/0047Y02T10/40
    • The present invention relates to a device for controlling a diesel engine and a method for the same. The device is to measure the oxygen content of a fuel using biodiesel and to provide an optimal engine control method for reducing nitrogen compounds according to the oxygen content. The device for controlling a diesel engine comprises an oxygen content detecting sensor, which detects the oxygen content of exhaust gas discharged from a diesel engine; and an engine control unit (ECU). The ECU detects the biodiesel content from the oxygen content of the exhaust gas, which is measured by the oxygen content detecting sensor, and calculates an engine control set point according to the load and speed of the diesel engine from a table of engine control values, which is mapped according to each biodiesel content, thereby controlling the operation of the diesel engine with the set point.
    • 本发明涉及一种用于控制柴油发动机的装置及其方法。 该装置是使用生物柴油测量燃料的氧含量,并提供根据氧含量减少氮化合物的最佳发动机控制方法。 用于控制柴油发动机的装置包括氧含量检测传感器,其检测从柴油发动机排出的废气的氧含量; 和发动机控制单元(ECU)。 ECU通过氧含量检测传感器测定的废气氧含量检测生物柴油含量,根据发动机控制值的表格,根据柴油发动机的负荷和速度计算发动机控制设定值, 根据每个生物柴油含量进行映射,从而以设定点控制柴油发动机的运转。
    • 9. 发明公开
    • 건설기계의 유압펌프 제어 방법
    • 建筑机械液压泵控制方法
    • KR1020140072406A
    • 2014-06-13
    • KR1020120139410
    • 2012-12-04
    • 두산인프라코어 주식회사
    • 김정호고영경한영덕신승협
    • F15B19/00E02F9/22F04B27/08
    • F15B21/042E02F9/226F04B27/08F15B21/045F15B2211/20523
    • The present invention relates to a method of controlling a hydraulic pump for construction machinery including a data collecting step (S10) of collecting a temperature value of cooling water and a temperature value of the working oil; a reference temperature comparing/determining step (S20) of comparing the temperature value of the cooling water and the temperature value of the working oil obtained in the data collecting step (S10) with reference temperature to stop the control if the temperature value is higher than the reference temperature and proceed to a next step if the temperature value is lower than the reference temperature; a control temperature selecting/determining step (S30) of determining whether any of the temperature value of the cooling water and the temperature value of the working oil is lower than the reference temperature if the temperature value of the cooling water and the temperature value of the working oil is lower than the reference temperature; a first control temperature setting step (S40) of setting the temperature value of the cooling water as a control temperature if the cooling water is colder; a second control temperature setting step (S42) of setting the temperature value of the working oil as a control temperature if the working oil is colder; a data loading step (S50) of loading data of controlling an angle of a swash plate of the hydraulic pump; and a control step (S60) of setting the maximum angle of the swash plate by substituting the control temperature set in the first and second control temperature setting steps (S40, S42) in a corresponding region of the data of controlling the angle of the swash plate of the hydraulic pump.
    • 本发明涉及一种控制工程机械液压泵的方法,包括:收集冷却水的温度值和工作油的温度值的数据收集步骤(S10); 参考温度比较/确定步骤(S20),其将在数据收集步骤(S10)中获得的冷却水的温度值和工作油的温度值与参考温度进行比较,以在温度值高于 参考温度,如果温度值低于参考温度,则进行下一步骤; 控制温度选择/确定步骤(S30),如果冷却水的温度值和冷却水的温度值,则确定冷却水的温度值和工作油的温度值是否低于参考温度 工作油低于参考温度; 如果冷却水较冷,则将冷却水的温度值设定为控制温度的第一控制温度设定步骤(S40) 如果工作油较冷,则将工作油的温度值设定为控制温度的第二控制温度设定步骤(S42) 数据加载步骤(S50),用于加载控制液压泵的斜板角度的数据; 以及控制步骤(S60),通过将控制斜盘角度的数据的对应区域中的第一和第二控制温度设定步骤(S40,S42)中设定的控制温度代入旋转斜盘的最大角度, 液压泵板。