Travel motor hydraulic control system for a construction machine
    1.
    发明授权
    Travel motor hydraulic control system for a construction machine 有权
    工程机械行程电机液压控制系统

    公开(公告)号:US06474063B2

    公开(公告)日:2002-11-05

    申请号:US09912304

    申请日:2001-07-26

    IPC分类号: F16D3102

    摘要: A travel motor hydraulic control system for a construction machine having a plurality of hydraulic pumps which supply individually pressurized fluid for a plurality of hydraulic travel motors and a plurality of flow control valves which control the flow rate of the pressurized fluid to be supplied to the motor during an ordinary work. A controller receives a control signal representative of a travel control lever stroke sensed by a position sensor and a control signal detected by a pressure sensor, determines if the vehicle is traveling up a slope, and transmits a command signal to a solenoid operated valve to move a pilot operated shut off valve toward a valve-closing position, thereby the travel hydraulic motors are individually supplied the pressurized fluid from the hydraulic pumps.

    摘要翻译: 一种用于建筑机械的行驶马达液压控制系统,具有多个液压泵,所述多个液压泵为多个液压行进马达单独提供加压流体,以及多个流量控制阀,其控制供给马达的加压流体的流量 在普通的工作 控制器接收表示由位置传感器检测到的行驶控制杆行程的控制信号和由压力传感器检测到的控制信号,确定车辆是否正在上坡上行驶,并将指令信号发送到电磁阀以移动 先导操作的截止阀朝向阀关闭位置,由此行驶液压马达分别从液压泵供给加压流体。

    Control system of a hydraulic construction machine
    2.
    发明授权
    Control system of a hydraulic construction machine 有权
    液压施工机械控制系统

    公开(公告)号:US06560962B2

    公开(公告)日:2003-05-13

    申请号:US09888507

    申请日:2001-06-26

    IPC分类号: F16D3102

    摘要: The present invention provides for a control system 20 of a hydraulic construction machine for enhancing a responsibility and stability of a work implement movement. The control system 20 comprises a variable displacement type hydraulic pump 2, a hydraulic actuator 7 driven by hydraulic fluid delivered from the pump 2, a flow control valve 5 for controlling the flow rate of the hydraulic fluid to the hydraulic actuator 7 in response to a travel amount of an operating lever 8, the variable bleed valve 14 disposed in the bleed-off hydraulic circuit 13 through which exhausts the hydraulic fluid supplied to the hydraulic actuator 7 and a controller 15 for controlling the flow rate through the variable bleed valve 14. The controller 15 of the variable bleed valve 14 includes a storage unit 15c for storing multiple function as an opening area function which determines the optimum amount of the exhausted fluid through the variable bleed valve 14 in response to the amount of an external command signal 50 through a monitor 16.

    摘要翻译: 本发明提供一种用于增强作业机构运动的责任和稳定性的液压施工机械的控制系统20。 控制系统20包括可变排量型液压泵2,由从泵2输送的液压流体驱动的液压致动器7,用于响应于液压致动器7控制液压致动器7的液压流体的流量的流量控制阀5 操作杆8的行进量,设置在泄放液压回路13中的可变放气阀14,通过该排放液压回路13排出供给到液压致动器7的液压油,控制器15控制通过可变排气阀14的流量。 可变放气阀14的控制器15包括用于存储多个功能的存储单元15c,作为打开区域功能,其响应于外部命令信号50的数量通过可变放气阀14确定排出的流体的最佳量 监视器16。

    Catalyst deterioration detection apparatus and catalyst deterioration detection method for internal combustion engine
    3.
    发明授权
    Catalyst deterioration detection apparatus and catalyst deterioration detection method for internal combustion engine 有权
    用于内燃机的催化剂劣化检测装置和催化剂劣化检测方法

    公开(公告)号:US08806928B2

    公开(公告)日:2014-08-19

    申请号:US13695372

    申请日:2010-04-30

    IPC分类号: G01M15/10

    摘要: Provision is made for a catalyst that is arranged in an exhaust passage of an internal combustion engine and has an oxidation function, downstream side temperature detection means that detects the temperature of an exhaust gas at a downstream side from the catalyst, and addition means that adds a reducing agent into the exhaust gas from an upstream side from the catalyst, wherein there are also provided correlation value calculation means that calculates a correlation value which is correlated with an amount of change of the temperature detected by the downstream side temperature detection means when the reducing agent is added by the addition means and when a transient operation of the internal combustion engine is carried out, and determination means that determines a deterioration of the catalyst by making a comparison between the correlation value and a threshold value which indicates the deterioration of the catalyst.

    摘要翻译: 设置有布置在内燃机的排气通道中并具有氧化功能的催化剂,下游侧温度检测装置,其检测催化剂下游侧的废气的温度,以及添加装置 还原剂从催化剂的上游侧排入废气中,其中还提供相关值计算装置,其计算与当下游侧温度检测装置检测到的温度的变化量相关的相关值时 通过加法装置添加还原剂,并且当进行内燃机的瞬时运转时,以及通过比较相关值和指示劣化的阈值来确定催化剂的劣化的确定装置 催化剂。

    CATALYST DETERIORATION DETERMINATION SYSTEM
    4.
    发明申请
    CATALYST DETERIORATION DETERMINATION SYSTEM 审中-公开
    催化剂测定系统

    公开(公告)号:US20140003999A1

    公开(公告)日:2014-01-02

    申请号:US14006250

    申请日:2011-03-22

    IPC分类号: G01N31/10

    摘要: An accurate determination of deterioration of a NOx storage reduction catalyst. A supply device supplies a reducing agent to the NOx catalyst to change an air fuel ratio of an exhaust gas passing through the NOx catalyst, an NH3 detection device detects NH3 in the exhaust gas at the downstream side of the NOx catalyst, a control device adjusts an amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes a predetermined rich air fuel ratio, and a determination device makes a determination that the NOx catalyst has deteriorated, when a detected value of the NH3 detection device becomes equal to or greater than a threshold value, at the time of supplying the reducing agent while adjusting the amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes the predetermined rich air fuel ratio.

    摘要翻译: 精确测定NOx储存还原催化剂的劣化。 供给装置向NO x催化剂供给还原剂以改变通过NOx催化剂的废气的空燃比,NH 3检测装置检测NOx催化剂下游侧的废气中的NH 3,控制装置调整 一定量的还原剂使得排气的空燃比成为预定的浓空燃比,并且当NH 3检测装置的检测值变为等于1时,确定装置判定为NOx催化剂已劣化 或大于阈值,同时在调节还原剂的量的同时供给还原剂,使得排气的空燃比成为预定的浓空燃比。

    Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine
    5.
    发明授权
    Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine 有权
    用于内燃机的缸内空燃比不平衡确定装置

    公开(公告)号:US08560208B2

    公开(公告)日:2013-10-15

    申请号:US13505849

    申请日:2009-11-05

    IPC分类号: B60T7/12

    摘要: An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, as an “EGR supplying state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt of a detected air-fuel ratio abyfs represented by an output value of an air-fuel ratio sensor when an EGR gas is being supplied, and obtains, as an “EGR stop state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt when an EGR gas supply is being stopped. The determination apparatus obtains an “EGR-causing imbalance determination parameter Pegr” by subtracting the EGR stop state imbalance determination parameter Poff from the EGR supplying state imbalance determination parameter Pon, and determines that an inter-cylinder air-fuel ratio imbalance state has occurred due to the supply of the EGR gas when the parameter Pegr is larger than a threshold Pegrth.

    摘要翻译: 根据本发明的气缸内空燃比不平衡判定装置(判定装置),作为“EGR供给状态不平衡判定参数”,获得与检测到的空气 - 燃料比不平衡判定装置的差分值d(abyfs)dt对应的值, 在EGR气体供给时由空燃比传感器的输出值表示的燃料比abyfs,作为“EGR停止状态不平衡判定参数”,获得与差分值d(abyfs)dt对应的值 正在停止EGR气体供应。 确定装置通过从EGR供应状态不平衡确定参数Pon中减去EGR停止状态不平衡确定参数Poff而获得“EGR导致不平衡确定参数Pegr”,并且确定缸间空燃比不平衡状态已经发生 当参数Pegr大于阈值Pegrth时,供应EGR气体。

    APPARATUS FOR DETERMINING AN AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS OF AN INTERNAL COMBUSTION ENGINE
    6.
    发明申请
    APPARATUS FOR DETERMINING AN AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS OF AN INTERNAL COMBUSTION ENGINE 有权
    用于确定内燃机缸内空燃比不平衡的装置

    公开(公告)号:US20130261934A1

    公开(公告)日:2013-10-03

    申请号:US13871249

    申请日:2013-04-26

    IPC分类号: F02D41/00

    摘要: An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.

    摘要翻译: 一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置,作为空燃比之差变大或变小的不平衡确定参数变大,并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果,气缸之间的燃料比不平衡。 确定装置计算净化校正系数,其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化,同时蒸发的燃料气体被引入进气通道中,并且校正燃料 喷射量与净化校正系数FPG。

    Mechanical seal sliding member, and mechanical seal
    9.
    发明授权
    Mechanical seal sliding member, and mechanical seal 有权
    机械密封滑动件,机械密封

    公开(公告)号:US08360436B2

    公开(公告)日:2013-01-29

    申请号:US12812033

    申请日:2009-01-06

    IPC分类号: F16J15/34

    CPC分类号: F16J15/3424

    摘要: The present invention provides a mechanical seal sliding member with high lubricating characteristics, in which the coefficient of friction and the temperature of sliding surfaces are lowered and stabilized without excessive leakage. In the mechanical seal sliding member of the present invention, on the sliding surface 2, a plurality of grating sections 5 are formed separately in each of which a plurality of linear shape ridge portions parallel to each other are formed in a predetermined region with a predetermined pitch. The linear shape ridge portions of the plurality of grating sections are formed as inclined at a predetermined angle to a sliding direction of the sliding surfaces 2. Such periodic structure can improve the lubricating characteristics for lubrication. By irradiating a linearly polarized femtosecond laser with irradiating energy adjacent to a process threshold level to a material surface, a fine periodic structure with a cycle interval comparable with a laser wavelength and with a ridge depth half or less than the laser wavelength can be formed by a self-structuring manner.

    摘要翻译: 本发明提供一种具有高润滑特性的机械密封滑动构件,其中摩擦系数和滑动面的温度降低并稳定而没有过多的泄漏。 在本发明的机械密封滑动部件中,在滑动面2上分别形成多个光栅部5,每个光栅部5分别形成有规定区域的多个直线状的脊状部, 沥青。 多个格栅部的直线形状的脊部形成为与滑动面2的滑动方向成预定角度倾斜。这种周期性结构可以提高润滑的润滑特性。 通过用材料表面照射具有与过程阈值水平相邻的能量的线性偏振飞秒激光,可以通过与激光波长相当的周期间隔和具有与激光波长一半或更小的脊深度的精细周期性结构来形成微小的周期性结构, 一种自我组织的方式。

    Malfunction detection apparatus and malfunction detection method for an EGR system
    10.
    发明授权
    Malfunction detection apparatus and malfunction detection method for an EGR system 有权
    用于EGR系统的故障检测装置和故障检测方法

    公开(公告)号:US08346462B2

    公开(公告)日:2013-01-01

    申请号:US12677194

    申请日:2009-08-28

    摘要: A determination is made more simply as to a malfunction of a low pressure EGR device that supplies an EGR gas from a low pressure EGR passage connecting between an exhaust passage at a location downstream of a turbine and an intake passage. Provision is made for a high pressure EGR device that connects between the exhaust passage at a location upstream of the turbine and the intake passage, the low pressure EGR device that connects between the exhaust passage at a location downstream of the turbine and the intake passage, and a detection unit that detects a malfunction of the low pressure EGR device from the degree of opening of a high pressure EGR valve at the time when the EGR gas is supplied from both the high pressure EGR device and the low pressure EGR device, and at the time when the high pressure EGR valve of the high pressure EGR device is controlled in a feedback manner so as to direct an amount of EGR gas in a cylinder toward a target range of the amount of EGR gas, while carrying out open loop control of a low pressure EGR valve of the low pressure EGR device.

    摘要翻译: 更简单地确定从连接在涡轮机下游的排气通道和进气通道之间的低压EGR通道供应EGR气体的低压EGR装置的故障。 对于在涡轮机上游的排气通道和进气通道之间连接的高压EGR装置,连接在涡轮机下游的排气通道和进气通道之间的低压EGR装置, 以及检测单元,其从在从高压EGR装置和低压EGR装置供给EGR气体时,从高压EGR阀的开度开始,检测低压EGR装置的故障, 以反馈方式控制高压EGR装置的高压EGR阀的时间,以便将EGR气体中的EGR气体的量朝向EGR气体的量的目标范围引导,同时进行开环控制 低压EGR装置的低压EGR阀。