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公开(公告)号：US20190128228A1
公开(公告)日：2019-05-02
申请号：US15796916
申请日：2017-10-30
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Martin , Jonathan W. Anders , Robert Campion
CPC classification number: F02M47/06 , F02M55/002 , F02M57/02 , F02M61/1886 , F02M63/0043 , F02M2200/46
Abstract: A fuel system includes a fuel injector having a fuel passage and a purging fluid passage formed therein. A nozzle tip inner surface defines a sac forming a blind end of the fuel passage in the fuel injector. A coaxial concentric check assembly includes a purging check movable to admit a purging fluid such as pressurized air into the fuel passage to purge the sac of fuel. Reduced injector dribble is observed from the purging of fuel.
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公开(公告)号：US20140316664A1
公开(公告)日：2014-10-23
申请号：US13868790
申请日：2013-04-23
Applicant: CATERPILLAR INC.
Inventor： Jonathan W. Anders , Brian D. Kuras , Adam M. Nackers , Christopher P. Braet
CPC classification number: E02F9/2058 , E02F9/123 , E02F9/2095 , E02F9/2253 , G05B11/42 , G05B13/02
Abstract: A system and method are provided for controlling a movable element in accordance with a speed command. The movable element, which may be an excavator swing platform, is moved via an actuator that is driven in accordance with a torque command. The speed of the movable element is sensed, and a torque command is generated via PID control based on the speed command and the sensed speed. The PID control uses a set of gains including a P-gain, an I-gain, and a D-gain. At least one of these gains is set based on a counter, and the counter is set, cleared, incremented, or decremented based on one or more of the speed command, the torque command and the sensed speed. In this way, the movable element responds aggressively to operator input, but stability is maintained.
Abstract translation: 提供了一种用于根据速度指令控制可移动元件的系统和方法。 可移动元件（其可以是挖掘机摆动平台）通过根据扭矩指令驱动的致动器移动。 感测到可动元件的速度，并通过基于速度指令和检测速度的PID控制产生转矩指令。 PID控制使用一组增益，包括P增益，I增益和D增益。 这些增益中的至少一个基于计数器设置，并且基于速度命令，转矩命令和感测速度中的一个或多个来设置，清除，递增或递减计数器。 以这种方式，可移动元件对操作者输入进行积极的响应，但是保持稳定性。
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23.发明授权公开(公告)号：US12215639B1
公开(公告)日：2025-02-04
申请号：US18513760
申请日：2023-11-20
Applicant: Caterpillar Inc.
Inventor： Kenth I. Svensson , Jonathan W. Anders , Yongli Qi
Abstract: Operating an engine system includes calculating a crank angle timing term corresponding to an in-cylinder temperature sufficient for autoignition of a first fuel injected at a first injection location. Operating an engine system further includes calculating, based on the crank angle timing term, at least one of an injection amount or an injection duration, to increase the in-cylinder temperature sufficiently via burning of the first fuel to ignite a second fuel injected into a mixture of the first fuel and pressurized intake air. The first fuel may include a blend of dimethyl ether (DME), methanol (MeOH), and water. Based on expected progression of in-cylinder temperatures, and fuel injection amount and/or duration based thereon, desirable controllability of combustion phasing and/or other combustion properties may be realized.
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公开(公告)号：US20240351573A1
公开(公告)日：2024-10-24
申请号：US18304746
申请日：2023-04-21
Applicant: Caterpillar Inc.
Inventor： Robert M. McDavid , Jonathan W. Anders , Bobby John , Timothy A. Bazyn , Youngjin Son , Aaron W. Costall , Radoslav B. Ivanov
CPC classification number: B60W20/15 , F02B39/10 , F02D41/0027 , F02D41/1454
Abstract: Operating a hybrid power system for a machine includes combusting a direct injected gaseous hydrogen fuel in an engine operating an electrical generator, and increasing a load demand of the hybrid power system. Operating the hybrid power system further includes operating an electrical-assist compressor to supply an increased airflow into the engine based on an increased engine power demand to satisfy the increased load demand. Air-fuel equivalence ratio of the engine (so-called “lambda”) is maintained at a ratio of about 2 or greater to limit NOx emissions, and between a hydrogen fuel misfire limit and a hydrogen fuel preignition limit. Related apparatus and control logic is also disclosed.
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公开(公告)号：US12110851B2
公开(公告)日：2024-10-08
申请号：US18082101
申请日：2022-12-15
Applicant: Caterpillar Inc.
Inventor： Bobby John , Jonathan W. Anders
CPC classification number: F02M43/04 , F02M51/06 , F02M2200/46
Abstract: An engine includes a piston movable in a cylinder and having a combustion bowl, and an annular rim forming a scoop extending axisymmetrically around a piston center axis. A fuel injector tip extends into the cylinder and includes a first orifice set and a second orifice set offset from one another and offset from the piston center axis. A plurality of orifice-rim distances are defined between orifices in the second orifice set and an annular rim of the piston. The orifices in the second orifice set having a range of orifice sizes varied in direct relation to the respective orifice-rim distances. Related methodology is also disclosed.
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Patent Agency Ranking
公开(公告)号：US20200095920A1
公开(公告)日：2020-03-26
申请号：US16140871
申请日：2018-09-25
Applicant: Caterpillar Inc.
Inventor： Kenth I. Svensson , Jonathan W. Anders , Adam Dempsey
Abstract: A piston for an internal combustion engine includes a crown portion having a bowl that includes a plurality of protrusions. Each of the plurality of protrusions includes a first side surface and a second side surface. Other features including at least one ledge formed between protrusions in segments, and a generally flat, inward facing surface on the protrusions may also be used.
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公开(公告)号：US10563609B2
公开(公告)日：2020-02-18
申请号：US15814958
申请日：2017-11-16
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Clifford Martin , Jonathan W. Anders , Robert M. Campion
Abstract: A fuel injector includes a nozzle having at least one first orifice. The at least one first orifice selectively injects a first fuel. An outer check is located movably within the nozzle. The outer check includes at least one second orifice. The at least one second orifice selectively injects a second fuel. An inner check is located movably and concentrically within the outer check. The at least one first orifice is adapted to selectively inject at least one of the first fuel and the second fuel therethrough based on a position of each of the outer check and the inner check.
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公开(公告)号：US10563597B2
公开(公告)日：2020-02-18
申请号：US15814918
申请日：2017-11-16
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Clifford Martin , Jonathan W. Anders , Robert M. Campion
Abstract: A fuel injector includes a nozzle having at least one first orifice provided therein. The at least one first orifice is adapted to selectively inject one of a fuel and an oxidant. An outer check is disposed movably within the nozzle. The outer check includes at least one second orifice provided therein. The at least one second orifice is adapted to selectively inject an other of the oxidant and the fuel. An inner check is disposed movably and concentrically within the outer chock. The at least one second orifice is adapted to align with respect to the at least one first orifice to selectively inject the fuel and the oxidant together through the at least one first orifice based on a position of each of the outer check and the inner check.
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公开(公告)号：US20190170103A1
公开(公告)日：2019-06-06
申请号：US15832295
申请日：2017-12-05
Applicant: Caterpillar Inc.
Inventor： Glen Clifford Martin , Jonathan W. Anders , Robert M. Campion , Bobby John
CPC classification number: F02M61/168 , F02M43/04 , F02M61/1806 , F02M2200/46
Abstract: A fuel injector includes a nozzle including at least one outer orifice. The at least one outer orifice selectively injects a first fuel. An outer check is disposed movably within the nozzle. The outer check includes at least one first orifice and at least one second orifice. The at least one first orifice and the at least one second orifice are disposed circumferentially spaced apart with respect to one another. Each of the at least one first orifice and the at least one second orifice selectively injects a second fuel. An inner check is disposed movably and concentrically within the outer check. The at least one outer orifice is adapted to selectively injects at least one of the first fuel and the second fuel therethrough based on a position of each of the outer check and the inner check.
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公开(公告)号：US20190145339A1
公开(公告)日：2019-05-16
申请号：US15814918
申请日：2017-11-16
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Clifford Martin , Jonathan W. Anders , Robert M. Campion
Abstract: A fuel injector includes a nozzle having at least one first orifice provided therein. The at least one first orifice is adapted to selectively inject one of a fuel and an oxidant. An outer check is disposed movably within the nozzle. The outer check includes at least one second orifice provided therein. The at least one second orifice is adapted to selectively inject an other of the oxidant and the fuel. An inner check is disposed movably and concentrically within the outer chock. The at least one second orifice is adapted to align with respect to the at least one first orifice to selectively inject the fuel and the oxidant together through the at least one first orifice based on a position of each of the outer check and the inner check.
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