公开(公告)号：US20140238352A1

公开(公告)日：2014-08-28

申请号：US13774141

申请日：2013-02-22

Applicant: CATERPILLAR, INC.

Inventor： Nandagopal Methil ,  Daniel Puckett

IPC: F02M69/50

CPC classification number: F02M69/50 ,  F02D41/22 ,  F02D41/3845 ,  F02D2041/1432 ,  F02D2041/224 ,  F02D2200/0602

Abstract: An electronic controller for a common rail fuel system detects a fault when a time sum accumulated error exceeds a threshold. The time sum accumulated error is left unchanged when the operating condition is transient, and either adds to or subtracts from the time sum accumulated error responsive to a rail pressure error and the operating condition being steady state.

Abstract translation: 用于共轨燃料系统的电子控制器在时间累积误差超过阈值时检测故障。 当运行状态为瞬态时，累加误差保持不变，并且根据轨道压力误差和运行状态为稳定状态，从时间和积累误差中加或减。

公开(公告)号：US09482165B2

公开(公告)日：2016-11-01

申请号：US13866110

申请日：2013-04-19

Applicant: Caterpillar, Inc.

Inventor： Alan R. Stockner ,  Nandagopal Methil ,  Daniel Puckett

IPC: F02B13/00 ,  F02D41/00 ,  F02D41/04 ,  F02D41/30 ,  F02D41/38 ,  F02D19/06 ,  F02D19/10 ,  F02M43/00 ,  F02M63/02 ,  F02M55/00 ,  F02M55/02

CPC classification number: F02D41/0025 ,  F02D19/0605 ,  F02D19/061 ,  F02D19/0694 ,  F02D19/10 ,  F02D41/0027 ,  F02D41/008 ,  F02D41/042 ,  F02D41/3094 ,  F02D41/3863 ,  F02D41/401 ,  F02D2200/0602 ,  F02M43/00 ,  F02M55/002 ,  F02M55/02 ,  F02M63/026 ,  F02M63/0295 ,  Y02T10/36

Abstract: A machine includes a compression ignition engine fueled from common rail fuel injectors that predominately inject natural gas fuel that is compression ignited with a small pilot injection of liquid diesel fuel. When an engine shutdown command is communicated to an electronic controller, the supply of gaseous fuel to the gas rail is stopped and the gaseous fuel common rail is depressurized by continuing to run the engine and inject gaseous and liquid fuels while commanding a liquid pressure greater than the gas pressure. After the gas rail pressure has achieved an acceptable shutdown pressure, the engine is stopped. The gas rail pressure is then reduced to atmospheric pressure followed by the liquid fuel common rail being reduced to atmosphere pressure after stopping the engine.

Abstract translation: 一种机器包括由共轨燃料喷射器燃料的压燃式发动机，其主要是喷射天然气燃料，该天然气燃料通过小型先导式液体柴油燃料喷射而被压缩点燃。 当发动机关闭指令传送到电子控制器时，停止向气轨供应气体燃料，并通过继续运行发动机并喷射气体和液体燃料同时控制气体燃料共轨的液压大于 气压。 在气轨压力达到可接受的停机压力之后，发动机停止。 然后将气轨压力降低到大气压力，随后液体燃料共轨在停止发动机后减小到大气压力。

公开(公告)号：US20140316677A1

公开(公告)日：2014-10-23

申请号：US13866110

申请日：2013-04-19

Applicant: Caterpillar, Inc.

Inventor： Alan R. Stockner ,  Nandagopal Methil ,  Daniel Puckett

IPC: F02D41/00

CPC classification number: F02D41/0025 ,  F02D19/0605 ,  F02D19/061 ,  F02D19/0694 ,  F02D19/10 ,  F02D41/0027 ,  F02D41/008 ,  F02D41/042 ,  F02D41/3094 ,  F02D41/3863 ,  F02D41/401 ,  F02D2200/0602 ,  F02M43/00 ,  F02M55/002 ,  F02M55/02 ,  F02M63/026 ,  F02M63/0295 ,  Y02T10/36

Abstract: A machine includes a compression ignition engine fueled from common rail fuel injectors that predominately inject natural gas fuel that is compression ignited with a small pilot injection of liquid diesel fuel. When an engine shutdown command is communicated to an electronic controller, the supply of gaseous fuel to the gas rail is stopped and the gaseous fuel common rail is depressurized by continuing to run the engine and inject gaseous and liquid fuels while commanding a liquid pressure greater than the gas pressure. After the gas rail pressure has achieved an acceptable shutdown pressure, the engine is stopped. The gas rail pressure is then reduced to atmospheric pressure followed by the liquid fuel common rail being reduced to atmosphere pressure after stopping the engine.

Abstract translation: 一种机器包括由共轨燃料喷射器燃料的压燃式发动机，其主要是喷射天然气燃料，该天然气燃料通过小型先导式液体柴油燃料喷射而被压缩点燃。 当发动机关闭指令传送到电子控制器时，停止向气轨供应气体燃料，并通过继续运行发动机并喷射气体和液体燃料同时控制气体燃料共轨的液压大于 气压。 在气轨压力达到可接受的停机压力之后，发动机停止。 然后将气轨压力降低到大气压力，随后液体燃料共轨在停止发动机后减小到大气压力。

公开(公告)号：US20170009693A1

公开(公告)日：2017-01-12

申请号：US15260818

申请日：2016-09-09

Applicant: Caterpillar Inc.

Inventor： Nandagopal Methil ,  Daniel R. Puckett

IPC: F02D41/22 ,  F02D41/30 ,  F02D41/14 ,  F02M55/02 ,  F02M63/02

CPC classification number: F02D41/221 ,  F02D41/1401 ,  F02D41/1477 ,  F02D41/3082 ,  F02D41/3854 ,  F02D41/3863 ,  F02D2041/1409 ,  F02D2041/142 ,  F02D2041/225 ,  F02M55/025 ,  F02M63/005 ,  F02M63/0225 ,  F02M63/025 ,  F02M65/006

Abstract: A method of diagnosing a fault in a common rail fuel system having a proportional-integral-derivative (PID) controller includes determining a first integral output corresponding to a first fuel flow condition and a first rail pressure setting. The method includes comparing the first integral output with a threshold integral output and determining a second integral output corresponding to a second fuel flow condition and the first rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes determining a third integral output corresponding to the first fuel flow condition and a second rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes identifying a failure in at least one of a flow control valve arrangement and a pressure relief valve of the common rail fuel system based on the first, second, and the third integral outputs.

Abstract translation: 一种用于诊断具有比例积分微分（PID）控制器的共轨燃料系统中的故障的方法，包括确定与第一燃料流量状况和第一轨道压力设定相对应的第一积分输出。 该方法包括：当第一积分输出大于阈值积分输出时，将第一积分输出与阈值积分输出进行比较，并确定对应于第二燃料流量条件和第一轨道压力设定的第二积分输出。 该方法包括当第一积分输出大于阈值积分输出时，确定对应于第一燃料流量状况的第三积分输出和第二轨道压力设置。 该方法包括基于第一，第二和第三积分输出识别共轨燃料系统的流量控制阀装置和压力释放阀中的至少一个的故障。

公开(公告)号：US20150106040A1

公开(公告)日：2015-04-16

申请号：US14055271

申请日：2013-10-16

Applicant: Caterpillar Inc.

Inventor： Nandagopal Methil ,  Daniel R. Puckett

IPC: F02M65/00

CPC classification number: F02D41/221 ,  F02D41/1401 ,  F02D41/1477 ,  F02D41/3082 ,  F02D41/3854 ,  F02D41/3863 ,  F02D2041/1409 ,  F02D2041/142 ,  F02D2041/225 ,  F02M55/025 ,  F02M63/005 ,  F02M63/0225 ,  F02M63/025 ,  F02M65/006

Abstract: A method of diagnosing a fault in a common rail fuel system having a proportional-integral-derivative (PID) controller includes determining a first integral output corresponding to a first fuel flow condition and a first rail pressure setting. The method includes comparing the first integral output with a threshold integral output and determining a second integral output corresponding to a second fuel flow condition and the first rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes determining a third integral output corresponding to the first fuel flow condition and a second rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes identifying a failure in at least one of a flow control valve arrangement and a pressure relief valve of the common rail fuel system based on the first, second, and the third integral outputs.

Abstract translation: 一种用于诊断具有比例积分微分（PID）控制器的共轨燃料系统中的故障的方法，包括确定与第一燃料流量状况和第一轨道压力设定相对应的第一积分输出。 该方法包括：当第一积分输出大于阈值积分输出时，将第一积分输出与阈值积分输出进行比较，并确定对应于第二燃料流量条件和第一轨道压力设定的第二积分输出。 该方法包括当第一积分输出大于阈值积分输出时，确定对应于第一燃料流量状况的第三积分输出和第二轨道压力设置。 该方法包括基于第一，第二和第三积分输出识别共轨燃料系统的流量控制阀装置和压力释放阀中的至少一个的故障。