公开(公告)号：US20180171927A1

公开(公告)日：2018-06-21

申请号：US15736618

申请日：2016-10-17

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

发明人： Toru SUDA ,  Rintarou TACHIBANA ,  Tetsuji NAGATA

IPC分类号： F02D41/30 ,  F02D41/04

CPC分类号： F02D41/3082 ,  F02D41/04 ,  F02D41/3094 ,  F02D2041/3881 ,  F02D2200/0602 ,  F02D2200/10 ,  F02D2250/04

摘要： A controller of a control device of an internal combustion engine includes: a storage configured to store fuel pressure detected during injection of one port injection valve of port injection valves in association with another port injection valve, of the port injection valves, scheduled to inject fuel after one or two cycles of the fuel pressure pulsation elapsing from injection of the one port injection valve; and a calculator configured to calculate an energization period of the another port injection valve based on the stored fuel pressure.

公开(公告)号：US09938923B2

公开(公告)日：2018-04-10

申请号：US15408928

申请日：2017-01-18

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Rintarou Tachibana ,  Tooru Suda ,  Masanao Idogawa

IPC分类号： F02B1/00 ,  F02D41/30 ,  F02D35/02 ,  F02M55/02 ,  F02D41/34 ,  F02D41/38

CPC分类号： F02D41/3094 ,  F02D35/028 ,  F02D41/34 ,  F02D2041/3881 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04 ,  F02M55/02 ,  Y02T10/44

摘要： A control system of an internal combustion engine includes a port injection valve and an electronic control unit. The electronic control unit is configured to: (i) obtain one of a start crank angle and an end crank angle, (ii) calculate the other of the start crank angle and the end crank angle, based on an equation for calculating a provisional injection amount of the case where the port injection valve provisionally injects the fuel with the one of the start crank angle and the end crank angle and a given crank angle range; (iii) convert a crank angle range from the start crank angle to the end crank angle, into a target energization period; and (iv) perform fuel injection by energizing the port injection valve for the target energization period.

公开(公告)号：US09835111B2

公开(公告)日：2017-12-05

申请号：US15397658

申请日：2017-01-03

申请人： Ford Global Technologies, LLC

发明人： Georg Louven ,  Jens Wojahn ,  Klemens Grieser ,  Marco Marceno ,  Helmut Hans Ruhland ,  Thomas Lorenz ,  Moritz Klaus Springer

IPC分类号： F02D41/04 ,  F02D41/30 ,  F02D41/40

CPC分类号： F02D41/402 ,  F02D41/008 ,  F02D41/3005 ,  F02D2250/04 ,  Y02T10/44

摘要： The disclosure relates to a method for operating an internal combustion engine having a plurality of cylinders, the method comprising, during one working cycle, distributing fuel for each cylinder of the plurality of cylinders among a plurality of injection processes according to settable split factors which respectively define a setpoint fuel mass and/or injection duration and time setting of each respective injection process for the plurality of individual injection processes, wherein random variation is carried out for at least one injection process.

公开(公告)号：US20170211501A1

公开(公告)日：2017-07-27

申请号：US15408928

申请日：2017-01-18

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Rintarou TACHIBANA ,  Tooru SUDA ,  Masanao IDOGAWA

IPC分类号： F02D41/30 ,  F02M55/02 ,  F02D35/02

CPC分类号： F02D41/3094 ,  F02D35/028 ,  F02D41/34 ,  F02D2041/3881 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04 ,  F02M55/02 ,  Y02T10/44

摘要： A control system of an internal combustion engine includes a port injection valve and an electronic control unit. The electronic control unit is configured to: (i) obtain one of a start crank angle and an end crank angle, (ii) calculate the other of the start crank angle and the end crank angle, based on an equation for calculating a provisional injection amount of the case where the port injection valve provisionally injects the fuel with the one of the start crank angle and the end crank angle and a given crank angle range; (iii) convert a crank angle range from the start crank angle to the end crank angle, into a target energization period; and (iv) perform fuel injection by energizing the port injection valve for the target energization period.

公开(公告)号：US09546941B2

公开(公告)日：2017-01-17

申请号：US14703587

申请日：2015-05-04

申请人： Caterpillar Inc.

发明人： Jason Rasmussen ,  Brett Zook ,  Baoyang Deng ,  Arvind Sivasubramanian

IPC分类号： F02D19/00 ,  G01N9/26 ,  F02B43/10 ,  F02D19/02 ,  G01N9/36 ,  G01N9/00

CPC分类号： G01N9/266 ,  F02B43/00 ,  F02B43/10 ,  F02B43/12 ,  F02B45/10 ,  F02B2043/103 ,  F02D19/026 ,  F02D19/029 ,  F02D19/061 ,  F02D19/0628 ,  F02D19/0636 ,  F02D19/10 ,  F02D41/0025 ,  F02D41/0027 ,  F02D2200/025 ,  F02D2200/0611 ,  F02D2200/0612 ,  F02D2250/04 ,  G01N9/24 ,  G01N9/26 ,  G01N9/36 ,  G01N2009/004 ,  Y02T10/32 ,  Y02T10/34 ,  Y02T10/36

摘要： A method for estimating a specific gravity of a gaseous fuel is described. The gaseous fuel may power an engine and the engine may include a cylinder, a gas valve configured to supply an intake port of the cylinder with the gaseous fuel, a gas rail configured to deliver the gaseous fuel to the gas valve, and a microprocessor adapted to perform the method. The method may comprise establishing a pressure wave in the gas rail by opening and closing the gas valve, wherein the pressure wave travels at the speed of sound in the gaseous fuel. The method may further comprise determining a frequency of the pressure wave in the gas rail, and estimating the specific gravity of the gaseous fuel based on the frequency of the pressure wave.

摘要翻译： 描述了用于估计气体燃料的比重的方法。 气体燃料可以为发动机供电，并且发动机可以包括气缸，构造成向汽缸的进气口供应气体燃料的气阀，构造成将气体燃料输送到气阀的气轨，以及微处理器 执行该方法。 该方法可以包括通过打开和关闭气阀来在气轨中建立压力波，其中压力波以气体燃料中的声速行进。 该方法还可以包括确定气轨中的压力波的频率，以及基于压力波的频率来估计气体燃料的比重。

公开(公告)号：US09534556B2

公开(公告)日：2017-01-03

申请号：US13901452

申请日：2013-05-23

申请人： Ford Global Technologies, LLC

发明人： Georg Louven ,  Jens Wojahn ,  Klemens Grieser ,  Marco Marceno ,  Helmut Hans Ruhland ,  Thomas Lorenz ,  Moritz Klaus Springer

IPC分类号： F02D41/04 ,  F02D41/30 ,  F02D41/00 ,  F02D41/40

CPC分类号： F02D41/402 ,  F02D41/008 ,  F02D41/3005 ,  F02D2250/04 ,  Y02T10/44

摘要： The disclosure relates to a method for operating an internal combustion engine having a plurality of cylinders, the method comprising, during one working cycle, distributing fuel for each cylinder of the plurality of cylinders among a plurality of injection processes according to settable split factors which respectively define a setpoint fuel mass and/or injection duration and time setting of each respective injection process for the plurality of individual injection processes, wherein random variation is carried out for at least one injection process.

摘要翻译： 本发明涉及一种用于操作具有多个气缸的内燃机的方法，所述方法包括在一个工作循环期间根据可分离的分流因子在多个喷射过程中分配多个气缸的每个气缸的燃料， 为多个单独喷射过程定义每个相应喷射过程的设定点燃料质量和/或喷射持续时间和时间设置，其中对至少一个喷射过程进行随机变化。

公开(公告)号：US20160327464A1

公开(公告)日：2016-11-10

申请号：US14703587

申请日：2015-05-04

申请人： Caterpillar Inc.

发明人： Jason Rasmussen ,  Brett Zook ,  Baoyang Deng ,  Arvind Sivasubramanian

IPC分类号： G01N9/26 ,  F02B43/10

CPC分类号： G01N9/266 ,  F02B43/00 ,  F02B43/10 ,  F02B43/12 ,  F02B45/10 ,  F02B2043/103 ,  F02D19/026 ,  F02D19/029 ,  F02D19/061 ,  F02D19/0628 ,  F02D19/0636 ,  F02D19/10 ,  F02D41/0025 ,  F02D41/0027 ,  F02D2200/025 ,  F02D2200/0611 ,  F02D2200/0612 ,  F02D2250/04 ,  G01N9/24 ,  G01N9/26 ,  G01N9/36 ,  G01N2009/004 ,  Y02T10/32 ,  Y02T10/34 ,  Y02T10/36

摘要： A method for estimating a specific gravity of a gaseous fuel is described. The gaseous fuel may power an engine and the engine may include a cylinder, a gas valve configured to supply an intake port of the cylinder with the gaseous fuel, a gas rail configured to deliver the gaseous fuel to the gas valve, and a microprocessor adapted to perform the method. The method may comprise establishing a pressure wave in the gas rail by opening and closing the gas valve, wherein the pressure wave travels at the speed of sound in the gaseous fuel. The method may further comprise determining a frequency of the pressure wave in the gas rail, and estimating the specific gravity of the gaseous fuel based on the frequency of the pressure wave.

摘要翻译： 描述了用于估计气体燃料的比重的方法。 气体燃料可以为发动机供电，并且发动机可以包括气缸，构造成向汽缸的进气口供应气体燃料的气阀，构造成将气体燃料输送到气阀的气轨，以及微处理器 执行该方法。 该方法可以包括通过打开和关闭气阀来在气轨中建立压力波，其中压力波以气体燃料中的声速行进。 该方法还可以包括确定气轨中的压力波的频率，以及基于压力波的频率来估计气体燃料的比重。

公开(公告)号：US09436916B2

公开(公告)日：2016-09-06

申请号：US13808060

申请日：2011-06-27

申请人： Guenter Veit

发明人： Guenter Veit

IPC分类号： F02D41/14 ,  G06N99/00 ,  F02D41/24 ,  F02D41/38 ,  F02M63/02 ,  F02D41/30

CPC分类号： G06N99/005 ,  F02D41/1402 ,  F02D41/2422 ,  F02D41/2464 ,  F02D41/2467 ,  F02D41/2477 ,  F02D41/3082 ,  F02D41/3845 ,  F02D41/3854 ,  F02D2041/1409 ,  F02D2041/141 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04 ,  F02D2250/31 ,  F02M63/0225

摘要： A method for determining a correction characteristic curve for adapting a characteristic curve of an injection system, in which the correction characteristic curve includes at least one deviation of a measured characteristic curve from a setpoint characteristic curve, the at least one deviation including a sum tolerance of at least two components of the injection system, which have an effect on the characteristic curve.

摘要翻译： 一种用于确定用于调整注射系统的特性曲线的校正特性曲线的方法，其中所述校正特性曲线包括测得的特性曲线与设定点特性曲线的至少一个偏差，所述至少一个偏差包括 喷射系统的至少两个部件，其对特性曲线具有影响。

公开(公告)号：US08849592B2

公开(公告)日：2014-09-30

申请号：US13214402

申请日：2011-08-22

申请人： Yoshimitsu Takashima

发明人： Yoshimitsu Takashima

IPC分类号： G01F23/14 ,  F02D41/38

CPC分类号： F02D41/3863 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04

摘要： A fuel-injection condition detector includes a first approximate portion which approximates a plurality of fuel pressure values representing the descent pressure waveform or the ascent pressure waveform into a least-squares approximate line by least-squares method; and a weighting portion which applies a weight to the fuel pressure value. The weight is set greater as a difference between the fuel pressure and the least-squares approximate line is larger. Then, the weighted values are approximated into a weighted approximate line by the least-squares method.

摘要翻译： 一种燃料喷射状态检测器，其包括：通过最小二乘法近似将表示下降压力波形或上升压力波形的多个燃料压力值逼近最小二乘法近似线的第一近似部分; 以及对燃料压力值施加重量的加权部。 燃料压力与最小二乘法近似线之间的差值越大，重量越大。 然后，加权值通过最小二乘法逼近加权近似线。

公开(公告)号：US08640670B2

公开(公告)日：2014-02-04

申请号：US13161777

申请日：2011-06-16

申请人： Naoyuki Yamada ,  Yoshiharu Nonoyama

发明人： Naoyuki Yamada ,  Yoshiharu Nonoyama

IPC分类号： F02B3/00

CPC分类号： F02D41/402 ,  F02D2041/1432 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04 ,  Y02T10/44

摘要： A fuel-pressure waveform detector has a detect-waveform obtaining unit for obtaining a multi-stage injection pressure waveform by means of a fuel-pressure sensor while performing a multi-stage fuel injection during one combustion cycle. A model waveform memory stores a reference model pressure waveform of when a single fuel injection is performed. A waveform extracting unit extracts a pressure waveform due to the subject fuel injection by subtracting the reference model pressure waveform from the multi-stage injection pressure waveform. A correction unit corrects the reference model pressure waveform in such a manner that its attenuation degree becomes larger as a fuel injection period of the subject fuel injection is longer.

摘要翻译： 燃料压力波形检测器具有检测波形获取单元，用于在一个燃烧循环期间执行多级燃料喷射，借助于燃料压力传感器获得多级喷射压力波形。 模型波形存储器存储执行单次燃料喷射时的参考模型压力波形。 波形提取单元通过从多级注入压力波形中减去参考模型压力波形来提取由于目标燃料喷射引起的压力波形。 校正单元以这样的方式校正参考模型压力波形，使得当目标燃料喷射的燃料喷射周期较长时，其衰减程度变大。