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公开(公告)号：US11982244B1
公开(公告)日：2024-05-14
申请号：US18082608
申请日：2022-12-16
Applicant: Caterpillar Inc.
Inventor： Michael Edward Sattler , Daniel Reese Puckett
CPC classification number: F02D41/025 , F01N3/0253 , F01N9/002 , F02D41/008 , F02D41/029 , F02D41/20 , F01N2430/085 , F01N2610/03 , F01N2610/146 , F01N2900/0412 , F01N2900/08 , F02D2041/2017 , F02D2200/101
Abstract: This disclosure relates generally to emissions treatment devices including aftertreatment devices that may be utilized with internal combustion engines and, more particularly, to methods and systems for controlling in-cylinder dosing (ICD) and preventing fuel to oil dilution. A method of operating an engine converting an amount of heat needed for regenerating an aftertreatment device into a cam-stroke fueling strategy. The method further includes determining a number of the engine's cylinders to be active cylinders for introducing dosing fuel and calculating a total dosing fuel apportionment of the dosing fuel for each of the active cylinders based on the cam-stroke fueling strategy. A number of dosing shots per injector for each of the active cylinders can be calculated based on the total dosing fuel apportionment and an amount of dosing fuel is apportioned for each dosing shot according to the cam-stroke fueling strategy.
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公开(公告)号：US11994083B2
公开(公告)日：2024-05-28
申请号：US17893873
申请日：2022-08-23
Applicant: Caterpillar Inc.
Inventor： Daniel Reese Puckett , Andrew Marrack , Bradley Scott Bashore
CPC classification number: F02D41/3836 , F02D41/2467 , F02D41/365 , F02D41/3845 , F02D2041/224 , F02D2200/0602
Abstract: A fuel system for an internal combustion engine includes a fuel control system having a fueling control unit structured to determine a test point on a tip wear-sensitive region of a fuel injector delivery curve, and store measurements of pressure drops in a pressurized fuel reservoir caused by injections of fuel at the test point. The fueling control unit is further structured to produce an injector health signal based on the stored measurements of pressure drop. Related methodology and control logic for calculation of wear parameters for injection signal duration electronic trimming and prognostic health determinations are also disclosed.
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公开(公告)号：US11795886B2
公开(公告)日：2023-10-24
申请号：US17549288
申请日：2021-12-13
Applicant: Caterpillar Inc.
Inventor： Andrew O. Marrack , Daniel Reese Puckett , Mitchell B. Juchems
IPC: F02D41/20
CPC classification number: F02D41/20 , F02D2041/2034 , F02D2041/2051 , F02D2200/0602 , F02D2200/0606 , F02D2200/101
Abstract: Operating an engine system and fuel system includes energizing a solenoid actuator for a spill valve in a fuel injector in a first engine cycle via a standard waveform to inject a shot of fuel. Operating an engine system and fuel system further includes determining suitability for reduced energy operating of the fuel system, and energizing the solenoid actuator via a reduced energy waveform based on the determining suitability so as to inject one or more shots of fuel in a second engine cycle. The operating methodology and control logic can extend an engine speed range for multi-shot fuel injection in an engine.
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公开(公告)号：US09064401B2
公开(公告)日：2015-06-23
申请号：US13888522
申请日：2013-05-07
Applicant: Caterpillar Inc.
Inventor： Steven Thomas Grant , Frank Lombardi , Daniel Reese Puckett
CPC classification number: G08B21/182 , B65D90/50 , F17C9/00 , F17C13/02 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2223/046 , F17C2250/032 , F17C2250/0408 , F17C2250/0421 , F17C2250/0426 , F17C2250/043 , F17C2250/0439 , F17C2250/0473 , F17C2250/0491 , F17C2250/0495 , F17C2260/038 , F17C2265/06 , F17C2270/0581 , G01M3/3227 , G01M3/3245 , G01M3/3254
Abstract: A method of detecting leakage of a fluid from a tank is disclosed. The method may include determining cumulative commanded fluid consumption of the fluid in the tank over a selected time period, determining an actual change of a volume of the fluid in the tank over the selected time period, and comparing the cumulative commanded fluid consumption to the actual change of volume of the fluid. The method may further include producing a leak warning upon the actual change of volume of the fluid over the selected time period exceeding the cumulative commanded fluid consumption over the selected time period plus a threshold value.
Abstract translation: 公开了一种检测来自罐的流体泄漏的方法。 该方法可以包括在所选择的时间段内确定罐中的流体的累积指令流体消耗量，确定在所选择的时间段内罐中的流体的实际变化，以及将累积指令的流体消耗与实际 液体体积变化。 该方法可以进一步包括在所选择的时间段内超过在所选择的时间段内的累积指令的流体消耗加上阈值的流体的实际体积变化时产生泄漏警告。
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公开(公告)号：US20140202429A1
公开(公告)日：2014-07-24
申请号：US13749011
申请日：2013-01-24
Applicant: CATERPILLAR INC.
Inventor： Steven Thomas Grant , Frank Lombardi , Daniel Reese Puckett , Cory A. Brown , Joshua Wayne Steffen , Paul Joseph Desiderio
IPC: F02M69/00
CPC classification number: F02M69/00 , F02D19/02 , F02M21/02 , F02M21/0218 , F02M21/023 , F02M21/0236 , F02M21/0239 , Y02T10/32
Abstract: A system, related method and computer program product are disclosed for controlling fuel mass of CNG received by an engine. The system may comprise a heat exchanger configured to receive CLNG and supply coolant and to output CNG and return coolant, an injector configured to inject CNG into the engine, a gas line between the injector and heat exchanger, a control valve configured to receive return coolant from the heat exchanger and to change the amount of return coolant flowing through control valve, and a controller connected to the control valve. The gas line may be configured to carry CNG from the heat exchanger to the injector. The controller may be configured to maintain a Gas Line Temperature within an operating range by adjusting the amount of return coolant flowing through the control valve based, at least in part, on the Gas Line Temperature and a Target Return Coolant Temperature.
Abstract translation: 公开了一种用于控制由发动机接收的CNG的燃料质量的系统，相关方法和计算机程序产品。 该系统可以包括热交换器，其被配置为接收CLNG并供应冷却剂并输出CNG并返回冷却剂;配置成将CNG注入发动机的喷射器，喷射器和热交换器之间的气体管线;配置成接收返回冷却剂的控制阀 并且改变流过控制阀的冷却剂回流量，以及连接到控制阀的控制器。 气体管线可以被配置为将CNG从热交换器运送到喷射器。 控制器可以被配置为通过至少部分地基于气体管线温度和目标返回冷却剂温度调节流过控制阀的回流冷却剂的量来将气体管线温度维持在工作范围内。
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Patent Agency Ranking
公开(公告)号：US10041432B2
公开(公告)日：2018-08-07
申请号：US15401911
申请日：2017-01-09
Applicant: Caterpillar Inc.
Inventor： Daniel Reese Puckett , Bradley Scott Bashore , Michael Edward Sattler , Michael Scott Marchionda , Sasidhar Rayasam , Kranti Kumar Nellutla
CPC classification number: F02D41/3082 , F02D41/042 , F02D41/3836 , F02D41/3863 , F02D2041/224 , F02D2041/225 , F02D2200/0602 , F02D2200/101 , F02M55/025 , F02M63/0265 , F02M2200/247
Abstract: A fuel system is disclosed for use with an engine. The fuel system may have a plurality of fuel injectors, a common rail fluidly, a pump, and an outlet valve associated with the pump. The fuel system may also have a sensor configured to generate a signal indicative of a pressure of fuel in the common rail, and an electronic control module. The electronic control module may be configured to detect a zero-fueling condition, to determine a first pressure decay rate of the common rail during the zero-fueling condition while the pump is rotating, and to determine a second pressure decay rate of the common rail during the zero-fueling condition after the pump has stopped rotating. The electronic control module may also be configured to selectively generate a diagnostic flag associated with wear of the outlet valve based on the first and second pressure decay rates.
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公开(公告)号：US20140241913A1
公开(公告)日：2014-08-28
申请号：US13778280
申请日：2013-02-27
Applicant: CATERPILLAR INC.
Inventor： Daniel Reese Puckett
IPC: F04B9/10
Abstract: A cryogenic hydraulic reciprocating piston pump includes a casing which defines a piston chamber. The sidewall of the piston chamber includes a retraction spill port as well as a pumping spill port. At the end of a retraction stroke, a retraction spill passageway that extends through the piston becomes aligned with the retraction spill port and fluid is communicated from the pressurized side of the piston to the unpressurized side of the piston to stop the retraction stroke before the piston “bottoms out”. Similarly, at the end of a pumping stroke, a pumping spill passageway that extends through the piston becomes aligned with the pumping spill port which provides communication between the pressurized side of the piston and the unpressurized side of the piston thereby stopping movement of the piston before it “bottoms out”.
Abstract translation: 低温液压往复活塞泵包括限定活塞室的壳体。 活塞室的侧壁包括回缩溢出口以及泵送溢出口。 在回缩行程结束时，延伸穿过活塞的回缩溢流通道与回缩溢出口对准，并且流体从活塞的加压侧连通到活塞的非加压侧，以在活塞之前停止回缩行程 “底部出”。 类似地，在泵送冲程结束时，延伸穿过活塞的泵送溢流通道与泵送溢流口对准，该泵送溢流口提供活塞的加压侧与活塞的非加压侧之间的连通，从而阻止活塞的运动 它“底”了。
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公开(公告)号：US11946430B2
公开(公告)日：2024-04-02
申请号：US17560055
申请日：2021-12-22
Applicant: Caterpillar Inc.
Inventor： Mitchell B Juchems , Daniel Reese Puckett
CPC classification number: F02D41/20 , F02D41/401 , F02D2041/2013 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058
Abstract: Controlling a fuel injector in a fuel system for an engine includes switching between a boosted voltage power supply and a lower voltage power supply during energizing a solenoid actuator in a fuel injector, and generating a solenoid energizing waveform including a pull-in tier produced by a boosted voltage incipient current, a boosted voltage second current, and a lower voltage later current, based on the switching between a boosted voltage power supply and a lower voltage power supply. Controlling a fuel injector further includes detecting an arrival timing of the valve based on a property of the lower voltage later current, and electronically trimming the fuel injector based on the detecting an arrival timing. Related control system logic is also disclosed.
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公开(公告)号：US20240068424A1
公开(公告)日：2024-02-29
申请号：US17893873
申请日：2022-08-23
Applicant: Caterpillar Inc.
Inventor： Daniel Reese Puckett , Andrew Marrack , Bradley Scott Bashore
CPC classification number: F02D41/3845 , F02D41/365
Abstract: A fuel system for an internal combustion engine includes a fuel control system having a fueling control unit structured to determine a test point on a tip wear-sensitive region of a fuel injector delivery curve, and store measurements of pressure drops in a pressurized fuel reservoir caused by injections of fuel at the test point. The fueling control unit is further structured to produce an injector health signal based on the stored measurements of pressure drop. Related methodology and control logic for calculation of wear parameters for injection signal duration electronic trimming and prognostic health determinations are also disclosed.
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公开(公告)号：US20230193844A1
公开(公告)日：2023-06-22
申请号：US17560055
申请日：2021-12-22
Applicant: Caterpillar Inc.
Inventor： Mitchell B Juchems , Daniel Reese Puckett
CPC classification number: F02D41/20 , F02D41/401 , F02D2041/2013 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058
Abstract: Controlling a fuel injector in a fuel system for an engine includes switching between a boosted voltage power supply and a lower voltage power supply during energizing a solenoid actuator in a fuel injector, and generating a solenoid energizing waveform including a pull-in tier produced by a boosted voltage incipient current, a boosted voltage second current, and a lower voltage later current, based on the switching between a boosted voltage power supply and a lower voltage power supply. Controlling a fuel injector further includes detecting an arrival timing of the valve based on a property of the lower voltage later current, and electronically trimming the fuel injector based on the detecting an arrival timing. Related control system logic is also disclosed.
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