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公开(公告)号：US10151256B2
公开(公告)日：2018-12-11
申请号：US15829361
申请日：2017-12-01
Applicant: Caterpillar Inc.
Inventor： Karthik Jayasankaran , Arvind Sivasubramanian , Lingqian Yuan , James J. Cress , David J. Lin , Joshua T. Annin
IPC: F02D41/00 , F02B37/10 , F02M35/10 , F02M35/104 , F02D41/26
Abstract: A control system and method to control cold transient response of an engine. The control system can provide compressed air from a compressed air source to a turbocharger to boost speed of a turbine of the turbocharger, based on determined desired operating characteristics associated with upstream or downstream operation of the engine relative to the turbocharger. The control system can receive data corresponding to actual operating characteristics associated with the upstream or downstream operation of the engine relative to the turbocharger, compare the desired operating characteristics with the data corresponding to actual operating characteristics, and control the air assist from the compressed air source based on the comparison.
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公开(公告)号：US20150369716A1
公开(公告)日：2015-12-24
申请号：US14311853
申请日：2014-06-23
Applicant: Caterpillar Inc.
Inventor： Arvind Sivasubramanian , Christopher Gallmeyer , Venkat Vijay Kishore Turlapati , Brett Zook , Jason Rasmussen
IPC: G01N9/26
CPC classification number: G01N9/26 , G01N33/225
Abstract: The disclosure relates to a system and method for determining the specific gravity of a fuel used in a dual fuel engine. The system includes a fuel rail, at least one sensor, and a processor. The method includes sensing and recording, with the at least one sensor and the at least one memory, a first pressure profile of a first fuel in the fuel rail and a second pressure profile of a second fuel in the fuel rail. The first fuel has a known specific gravity and the second fuel has an unknown specific gravity. The method further includes calculating the second specific gravity of the second fuel, with a processor, based on the first pressure profile, the second pressure profile, and the first specific gravity.
Abstract translation: 本公开涉及一种用于确定在双燃料发动机中使用的燃料的比重的系统和方法。 该系统包括燃料轨，至少一个传感器和处理器。 该方法包括利用至少一个传感器和至少一个存储器来感测和记录燃料轨道中的第一燃料的第一压力分布和燃料轨道中的第二燃料的第二压力分布。 第一燃料具有已知比重，第二燃料具有未知的比重。 该方法还包括基于第一压力分布，第二压力分布和第一比重，用处理器计算第二燃料的第二比重。
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公开(公告)号：US11035317B2
公开(公告)日：2021-06-15
申请号：US16433839
申请日：2019-06-06
Applicant: Caterpillar Inc.
Inventor： Scott Fiveland , Arvind Sivasubramanian , Shivangi Wagle , Shawn Damm , Christopher Gallmeyer , Andy Pierpont
Abstract: A control system for controlling pilot fuel injection in a dual fuel engine is disclosed. The control system may determine, using measurements from one or more sensors, one or more combustion parameters associated with the dual fuel engine during operation of the dual fuel engine. The control system may determine an estimated nitrogen oxides (NOx) emissions level based on the one or more combustion parameters, and may determine a NOx error based on a comparison between the estimated NOx emissions level and a desired NOx emissions level. The control system may control a quantity of pilot fuel injected into the dual fuel engine based on the NOx error.
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公开(公告)号：US10927776B2
公开(公告)日：2021-02-23
申请号：US16410380
申请日：2019-05-13
Applicant: Caterpillar Inc.
Inventor： Scott B. Fiveland , Daniel Wester , Arvind Sivasubramanian , Christopher F. Gallmeyer
Abstract: A controller for an internal combustion engine is configured to operate the engine at a desired output power and at a desired air/fuel ratio provided in the cylinder, the desired air/fuel ratio depending on an amount of air, the primary fuel, and the secondary fuel provided to the cylinder selectively; gradually increase a power output of the engine during a transient event from an initial power output, to an intermediate power output, and then to a final power output; during the transient event, simultaneously with the power output increase, increase the amount of the primary fuel and the secondary fuel to produce a rich air/fuel ratio in the cylinder.
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5.发明授权公开(公告)号：US09488114B2
公开(公告)日：2016-11-08
申请号：US13677441
申请日：2012-11-15
Applicant: Caterpillar Inc.
Inventor： Arvind Sivasubramanian , Christopher F. Gallmeyer , David James Lin
CPC classification number: F02D19/0623 , F02D19/061 , F02D19/0628 , F02D19/081 , F02D35/027 , F02D41/0027 , F02D41/1446 , Y02T10/36
Abstract: A control system for a dual gaseous and liquid fuel engine includes an electronic controller configured to receive data from a plurality of sensing mechanisms indicative of an error in a plurality of different engine operating parameters. The electronic controller is further configured to determine a highest priority one of the errors, and limit substitution of the gaseous fuel responsive to a normalized value thereof.
Abstract translation: 用于双气体和液体燃料发动机的控制系统包括电子控制器，其被配置为从多个感测机构接收指示多个不同发动机操作参数中的误差的数据。 电子控制器还被配置为确定误差中的最高优先级之一，并且响应于其归一化值来限制气体燃料的替代。
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Patent Agency Ranking
公开(公告)号：US20160208749A1
公开(公告)日：2016-07-21
申请号：US14600841
申请日：2015-01-20
Applicant: Caterpillar Inc.
Inventor： Arvind Sivasubramanian , Vijay Turlapati , Christopher Gallmeyer , Jason Rasmussen
IPC: F02M43/04
CPC classification number: F02D41/0025 , F02D19/0642 , F02D31/001 , F02D41/0027 , F02D2200/0611 , F02D2200/101 , Y02T10/36
Abstract: A method for controlling fuel flow in a multi-fuel engine is disclosed. The method includes determining an estimated lower heating value (LHV) of a gaseous fuel by, at least, comparing a mapped volume flow value with an input volume flow value, the input volume flow value based on the input power. The method further includes determining a gaseous fuel flow rate for the gaseous fuel, the gaseous fuel flow rate based on, at least, a specific fuel substitution ratio of the gaseous fuel and a secondary fuel and the estimate LHV of the gaseous fuel source.
Abstract translation: 公开了一种用于控制多燃料发动机中的燃料流量的方法。 该方法包括通过至少将映射的体积流量值与输入体积流量值（基于输入功率）的输入体积流量值进行比较来确定气体燃料的估计的较低热值（LHV）。 该方法还包括基于气态燃料和二次燃料的特定燃料替代比和气体燃料源的估计LHV来确定气体燃料的气态燃料流量，气体燃料流量。
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7.发明申请公开(公告)号：US20150300281A1
公开(公告)日：2015-10-22
申请号：US14257093
申请日：2014-04-21
Applicant: Caterpillar Inc.
Inventor： Arvind Sivasubramanian , Shivangi Wagle , Christopher Gallmeyer
IPC: F02D41/00
CPC classification number: F02D41/0027 , F02B37/16 , F02D41/0007 , F02D41/1401 , F02D2041/1409 , F02D2041/1418 , F02D2200/0406 , Y02T10/144
Abstract: Controlling intake pressure in a gaseous fuel internal combustion engine includes calculating a control term in an intake pressure control loop based on a pressure error, and adjusting a throttle valve and a second valve responsive to the control term in first and second control loop cycles. The second valve is within a return conduit returning compressed gases from a location downstream a compressor to a location upstream. A pressure of gaseous fuel and air within the intake conduit is changed via the adjustments so as to reduce the pressure error.
Abstract translation: 控制气体燃料内燃机中的进气压力包括基于压力误差来计算进气压力控制回路中的控制项，以及响应于第一和第二控制回路循环中的控制项来调节节流阀和第二阀。 第二阀在回流管道内，将压缩气体从压缩机下游的位置返回到上游位置。 进气管道内的气体燃料和空气的压力通过调节改变，以减小压力误差。
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公开(公告)号：US20210010411A1
公开(公告)日：2021-01-14
申请号：US16505323
申请日：2019-07-08
Applicant: Caterpillar Inc.
Inventor： Shivangi Wagle , Liangtao Zhu , Kevin Sergott , Eric Schroeder , Arvind Sivasubramanian , Travis Barnes
IPC: F02B37/22 , F02B37/00 , F02B37/007 , F02D41/00 , F02D17/02
Abstract: A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.
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公开(公告)号：US10378457B2
公开(公告)日：2019-08-13
申请号：US15805297
申请日：2017-11-07
Applicant: Caterpillar Inc.
Inventor： Karthik Jayasankaran , Arvind Sivasubramanian
Abstract: An engine speed control system for an internal combustion engine includes a throttle, and a sensor that monitors a parameter indicative of pressure or density of fuel and air in an inlet manifold of the engine. The electronic control unit is coupled with the throttle and the sensor and structured to calculate a target mass flow through the throttle, a feedforward control term based on the target mass flow, and a feedforward control term based on data produced by the sensor. The electronic control unit is further structured to vary a position of the throttle based on the feedforward and feedback control terms to adjust a mass flow through the throttle toward the target mass flow. The control system is applicable in throttle governed as well as fuel governed systems.
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公开(公告)号：US20190136769A1
公开(公告)日：2019-05-09
申请号：US15805297
申请日：2017-11-07
Applicant: Caterpillar Inc.
Inventor： Karthik Jayasankaran , Arvind Sivasubramanian
CPC classification number: F02D9/02 , F02D11/105 , F02D19/023 , F02D41/0002 , F02D41/0007 , F02D41/0027 , F02D41/18 , F02D2009/0228 , F02D2041/141 , F02D2200/0406 , F02D2200/0414 , F02D2200/0611
Abstract: An engine speed control system for an internal combustion engine includes a throttle, and a sensor that monitors a parameter indicative of pressure or density of fuel and air in an inlet manifold of the engine. The electronic control unit is coupled with the throttle and the sensor and structured to calculate a target mass flow through the throttle, a feedforward control term based on the target mass flow, and a feedforward control term based on data produced by the sensor. The electronic control unit is further structured to vary a position of the throttle based on the feedforward and feedback control terms to adjust a mass flow through the throttle toward the target mass flow. The control system is applicable in throttle governed as well as fuel governed systems.
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