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公开(公告)号：US11415070B2
公开(公告)日：2022-08-16
申请号：US17102490
申请日：2020-11-24
申请人： Caterpillar Inc.
IPC分类号： F02D41/22 , F02M51/00 , G01R19/165 , F02D41/30
摘要： A method for identifying a fuel injector characteristic may include generating a signal to supply electrical current to the fuel injector, and monitoring the electrical current supplied to the fuel injector. The method may also include identifying the characteristic of the fuel injector based on the electrical current, the characteristic including a type of fuel injector, and performing a corrective action based on the type of fuel injector which was identified based on the electrical current.
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公开(公告)号：US20220163006A1
公开(公告)日：2022-05-26
申请号：US17102490
申请日：2020-11-24
申请人： Caterpillar Inc.
IPC分类号： F02D41/22 , F02M51/00 , F02D41/30 , G01R19/165
摘要： A method for identifying a fuel injector characteristic may include generating a signal to supply electrical current to the fuel injector, and monitoring the electrical current supplied to the fuel injector. The method may also include identifying the characteristic of the fuel injector based on the electrical current, the characteristic including a type of fuel injector, and performing a corrective action based on the type of fuel injector which was identified based on the electrical current.
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公开(公告)号：US20160252033A1
公开(公告)日：2016-09-01
申请号：US15149290
申请日：2016-05-09
申请人： Caterpillar Inc.
发明人： Adam D. Dye , Andy Publes , Arthur L. Gilliam , Dustin K. Fee , Kirti C. Tamhane
CPC分类号： F02D41/1497 , F02D17/02 , F02D41/0087 , F02D41/009 , F02D41/3005 , F02D41/401 , F02D2200/021 , F02D2200/101 , Y02T10/44
摘要： The disclosure provides a method to operate an engine including a first set of cylinders and a second set of cylinders with the help of an engine control module (ECM). The ECM determines a current engine speed, a current engine load, and a current degree of rotation. If the current engine load is below a threshold load that corresponds to the current engine speed, the ECM selects a cylinder cutout strategy. The ECM initiates the cylinder cutout strategy wherein the fuel supply is cutout alternatively between the first set of cylinders and the second set of cylinders at a predetermined degree of rotation. The fuel injection is modified by a predetermined amount to a set of non-cutout cylinders. The ECM deactivates the cylinder cutout strategy when the current engine load exceeds the threshold load that corresponds to the current engine speed.
摘要翻译： 本公开提供了一种在发动机控制模块（ECM）的帮助下操作包括第一组气缸和第二组气缸的发动机的方法。 ECM确定当前的发动机转速，当前的发动机负荷和当前的旋转度。 如果当前发动机负载低于对应于当前发动机转速的阈值负荷，则ECM选择汽缸切断策略。 ECM启动气缸切断策略，其中燃料供应在预定旋转角度处交替地切割在第一组气缸和第二组气缸之间。 燃料喷射被预定量修改为一组非切口滚筒。 当当前发动机负载超过对应于当前发动机转速的阈值负载时，ECM将停用气缸切断策略。
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公开(公告)号：US11313338B1
公开(公告)日：2022-04-26
申请号：US16953900
申请日：2020-11-20
申请人： Caterpillar Inc.
摘要： A method for controlling a fuel injector includes applying a spill valve current, applying a control valve current, the control and spill valves including components in electrical communication with each other, and detecting a timing at which the spill valve returns to an open position based on induced spill valve current. The method includes detecting a timing at which the control valve returns to a resting position based on induced control valve current, the induced spill valve current and the induced control valve current being included in respective freewheeling currents that at least partially overlap each other, adjusting a spill valve current that is applied during an injection, based on the detected spill valve return timing, and adjusting a control valve current that is applied during the injection, based on the detected control valve return timing.
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公开(公告)号：US20180112685A1
公开(公告)日：2018-04-26
申请号：US15299513
申请日：2016-10-21
申请人： Caterpillar Inc.
CPC分类号： F15B21/087 , F15B13/043 , F15B13/086 , F15B2013/0409 , F15B2211/20546 , F15B2211/327 , F15B2211/355 , F15B2211/575 , F15B2211/634 , F15B2211/6346 , F15B2211/635 , F15B2211/6656 , F16K3/262 , F16K3/265 , F16K11/22 , F16K27/003 , F16K31/0668 , F16K31/12 , G05D7/0664 , G05D16/2022 , G05D16/206
摘要： A system for controlling operation of a hydraulic valve is provided. The system includes a solenoid coupled to a spool assembly of the hydraulic valve. The system further includes a sensor disposed on the hydraulic valve. The sensor generates signals indicative of operational parameter of the hydraulic valve. The system also includes a controller in communication with the solenoid and the sensor. The controller receives signals generated by the sensor. The controller includes a booster circuit connected to the solenoid. The booster circuit boosts an actuating current generated in response to the signals received from the sensor. The controller further includes a switching circuit connected across the solenoid. The switching circuit controls a direction of the actuating current flowing through the solenoid. The solenoid actuates the spool assembly of the hydraulic valve to control the operation of the hydraulic valve based on the actuating current.
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