-
公开(公告)号：US07299784B2
公开(公告)日：2007-11-27
申请号：US11378123
申请日：2006-03-17
申请人： Takefumi Uchida , Yutaka Iwami , Takeo Kondo , Hideyuki Ishiyama
发明人： Takefumi Uchida , Yutaka Iwami , Takeo Kondo , Hideyuki Ishiyama
IPC分类号： F02D41/40
CPC分类号： F02D41/40 , F02D41/2422 , F02D41/3094 , F02D2200/0602 , F02D2200/0606 , Y02T10/44
摘要： An internal combustion engine is provided in which fuel pressure is changed and fuel injection is controlled in accordance with engine operating conditions. The internal combustion engine comprises a cylinder, a direct injection injector, a detection unit, and a control unit. The control unit includes two maps describing two factors of a fuel injection characteristic coefficient and an invalid injection period with respect to the fuel pressure of the direct injection injector. A first calculating section calculates a required fuel injection quantity. A second calculating section calculates a required fuel injection period in accordance with the required fuel injection quantity and the two factors of the fuel injection characteristic coefficient and the invalid injection period with respect to the fuel pressure. A controlling section controls the fuel injection such that the fuel is injected for the required fuel injection period.
摘要翻译： 提供内燃机，其中燃料压力改变并根据发动机运行条件来控制燃料喷射。 内燃机包括气缸，直喷式喷射器，检测单元和控制单元。 控制单元包括描述燃料喷射特性系数和相对于直接喷射喷射器的燃料压力的无效喷射周期的两个因素的两个图。 第一计算部分计算所需的燃料喷射量。 第二计算部根据所需的燃料喷射量和燃料喷射特性系数和无效喷射期间的两个因素相对于燃料压力来计算所需燃料喷射期间。 控制部分控制燃料喷射，使得燃料喷射所需的燃料喷射周期。
-
公开(公告)号：US20060212208A1
公开(公告)日：2006-09-21
申请号：US11378123
申请日：2006-03-17
申请人： Takefumi Uchida , Yutaka Iwami , Takeo Kondo , Hideyuki Ishiyama
发明人： Takefumi Uchida , Yutaka Iwami , Takeo Kondo , Hideyuki Ishiyama
IPC分类号： F02D41/40
CPC分类号： F02D41/40 , F02D41/2422 , F02D41/3094 , F02D2200/0602 , F02D2200/0606 , Y02T10/44
摘要： There is provided an internal combustion engine, in which a fuel pressure is changed and a fuel injection quantity is controlled in accordance with an engine operating condition when fuel is injected. The internal combustion engine comprises a cylinder, a direct injection injector arranged so as to supply the fuel to the cylinder, a detection unit for detecting an operating condition of the internal combustion engine, and a control unit for controlling the fuel injection. The control unit includes two maps describing tow factors of a fuel injection characteristic coefficient and an invalid injection period with respect to the fuel pressure of the direct injection injector, a first calculating section for calculating a required fuel injection quantity necessary for injecting the fuel into the cylinder in accordance with an information from the detection unit, and a second calculating section for calculating a required fuel injection period in accordance with the required fuel injection quantity and the two factors of the fuel injection characteristic coefficient and the invalid injection period with respect to the fuel pressure both of which are obtained from the two maps, a controlling section for controlling the fuel injection such that the fuel is injected for the required fuel injection period (T) through the direct injection injector.
摘要翻译： 提供了一种内燃机，其中燃料压力改变并且当喷射燃料时根据发动机运行状态来控制燃料喷射量。 内燃机包括气缸，配置成向气缸供给燃料的直接喷射喷射器，用于检测内燃机的运转状况的检测单元和控制燃料喷射的控制单元。 控制单元包括描述相对于直接喷射喷射器的燃料压力的燃料喷射特性系数和无效喷射周期的牵引因素的两个图，第一计算部分，用于计算将燃料喷射到 以及第二计算部分，用于根据所需的燃料喷射量和燃料喷射特性系数和无效喷射周期的两个因素来计算所需的燃料喷射周期，相对于 燃料压力都是从两个图中获得的，控制部分用于控制燃料喷射，使得燃料通过直接喷射注射器注入所需的燃料喷射周期（T）。
-
3.发明申请公开(公告)号：US20120297866A1
公开(公告)日：2012-11-29
申请号：US13477647
申请日：2012-05-22
IPC分类号： G01M15/04
CPC分类号： G01M15/104
摘要： An apparatus for detecting an abnormal air-fuel ratio variation, includes an abnormality detecting unit that detects an abnormal variation in each of a plurality of fuel injection valves on the basis of an injection ratio between the plurality of fuel injection valves, a fluctuation in the output before the injection ratio is changed and the fluctuation in the output after the injection ratio is changed; and a setting unit that corrects the abnormality determination threshold for each of the plurality of fuel injection valves on the basis of the injection ratio.
摘要翻译： 用于检测异常空燃比变化的装置包括异常检测单元，其基于多个燃料喷射阀之间的喷射比来检测多个燃料喷射阀中的每一个的异常变化， 在喷射比例变化之前的输出和喷射比之后的输出变化; 以及设定单元，其基于喷射率校正所述多个燃料喷射阀中的每一个的异常判定阈值。
-
4.发明授权Air/fuel ratio variation abnormality detection apparatus, and abnormality detection method 有权空气/燃料比变化异常检测装置和异常检测方法公开(公告)号：US08548718B2
公开(公告)日：2013-10-01
申请号：US13455812
申请日：2012-04-25
申请人： Toshihiro Kato , Isao Nakajima , Yoshihisa Oda , Takefumi Uchida
发明人： Toshihiro Kato , Isao Nakajima , Yoshihisa Oda , Takefumi Uchida
IPC分类号： F02D41/22
CPC分类号： F02D41/0085 , F02D41/182 , F02D41/221 , F02D41/3094 , F02D2041/224 , F02D2200/101
摘要： In an abnormality detection apparatus and an abnormality detection method for a construction in which each of cylinders is provided with a plurality of fuel injection valves, if it is discerned that a cause of the inter-cylinder variation abnormality exists in one of the fuel injection valves, an air/fuel ratio fluctuation parameter as an index value that represents the degree of the abnormality is calculated by normalizing the air/fuel ratio fluctuation parameter regarding that fuel injection valve on the basis of the injection proportion used when the parameter is measured.
摘要翻译： 在各气缸设有多个燃料喷射阀的异常检测装置和异常检测方法中，如果在一个燃料喷射阀中存在缸间变化异常的原因， 通过基于在测定参数时使用的喷射比例，对与该燃料喷射阀对应的空气/燃料比变动参数进行归一化来计算表示异常度的指标值的空燃比变动参数。
-
5.发明授权Apparatus and method for estimating internal EGR amount in internal combustion engine 有权用于估计内燃机内部EGR量的装置和方法公开(公告)号：US06904356B2
公开(公告)日：2005-06-07
申请号：US10778542
申请日：2004-02-17
申请人： Takefumi Uchida , Harufumi Muto
发明人： Takefumi Uchida , Harufumi Muto
CPC分类号： F02D13/0219 , F02D13/0261 , F02D41/0062 , F02M26/01 , F02M26/48 , Y02T10/18 , Y02T10/47
摘要： An electronic control unit of an internal combustion engine computes a remaining combusted gas amount Megr1, which exists in a cylinder immediately before an intake valve is opened, based on an intake pipe pressure Pm, an engine speed NE, and an intake valve opening timing Topen. At the same time, the control unit computes a backflow combusted gas amount Megr2, which is the amount of combusted gas that flows back into the cylinder from an exhaust pipe after the intake valve is opened, based on the intake pipe pressure Pm, the engine speed NE and a valve overlap amount OL. The control unit computes the sum of the remaining combusted gas amount Megr1 and the backflow combusted gas amount Megr2, and sets the sum as an estimated internal EGR amount MegrALL. As a result, the internal EGR amount is readily and accurately estimated.
摘要翻译： 内燃机的电子控制单元基于进气管压力Pm，发动机转速NE，计算存在于进气门打开前的气缸中的剩余燃烧气体量M egr1 < ，并且进气门打开正时T开启。 同时，控制单元计算回流燃烧气体量M egr2，其是基于进气门打开之后从排气管回流到气缸中的燃烧气体量，基于 进气管压力Pm，发动机转速NE和阀重叠量OL。 控制单元计算剩余燃烧气体量M egr1和回流燃烧气体量M egr2的总和，并将该和设定为估计的内部EGR量M egrALL 。 结果，容易且准确地估计内部EGR量。
-
公开(公告)号：US08805609B2
公开(公告)日：2014-08-12
申请号：US13477647
申请日：2012-05-22
CPC分类号： G01M15/104
摘要： An apparatus for detecting an abnormal air-fuel ratio variation, includes an abnormality detecting unit that detects an abnormal variation in each of a plurality of fuel injection valves on the basis of an injection ratio between the plurality of fuel injection valves, a fluctuation in the output before the injection ratio is changed and the fluctuation in the output after the injection ratio is changed; and a setting unit that corrects the abnormality determination threshold for each of the plurality of fuel injection valves on the basis of the injection ratio.
摘要翻译： 用于检测异常空燃比变化的装置包括异常检测单元，其基于多个燃料喷射阀之间的喷射比来检测多个燃料喷射阀中的每一个的异常变化， 在喷射比例变化之前的输出和喷射比之后的输出变化; 以及设定单元，其基于喷射率校正所述多个燃料喷射阀中的每一个的异常判定阈值。
-
7.发明申请AIR/FUEL RATIO VARIATION ABNORMALITY DETECTION APPARATUS, AND ABNORMALITY DETECTION METHOD 有权空气/燃料比变异异常检测装置和异常检测方法公开(公告)号：US20120277979A1
公开(公告)日：2012-11-01
申请号：US13455812
申请日：2012-04-25
申请人： Toshihiro Kato , Isao Nakajima , Yoshihisa Oda , Takefumi Uchida
发明人： Toshihiro Kato , Isao Nakajima , Yoshihisa Oda , Takefumi Uchida
CPC分类号： F02D41/0085 , F02D41/182 , F02D41/221 , F02D41/3094 , F02D2041/224 , F02D2200/101
摘要： In an abnormality detection apparatus and an abnormality detection method for a construction in which each of cylinders is provided with a plurality of fuel injection valves, if it is discerned that a cause of the inter-cylinder variation abnormality exists in one of the fuel injection valves, an air/fuel ratio fluctuation parameter as an index value that represents the degree of the abnormality is calculated by normalizing the air/fuel ratio fluctuation parameter regarding that fuel injection valve on the basis of the injection proportion used when the parameter is measured.
摘要翻译： 在各气缸设有多个燃料喷射阀的异常检测装置和异常检测方法中，如果在一个燃料喷射阀中存在缸间变化异常的原因， 通过基于在测定参数时使用的喷射比例，对与该燃料喷射阀对应的空气/燃料比变动参数进行归一化来计算表示异常度的指标值的空燃比变动参数。
-
公开(公告)号：US06917874B2
公开(公告)日：2005-07-12
申请号：US10778110
申请日：2004-02-17
申请人： Takefumi Uchida , Harufumi Muto
发明人： Takefumi Uchida , Harufumi Muto
CPC分类号： F02D13/0219 , F02D13/0207 , F02D13/0261 , F02D41/0062 , F02D2041/001 , F02M26/01 , F02P5/1516 , Y02T10/18 , Y02T10/46 , Y02T10/47
摘要： An electronic control unit corrects ignition timing according to changes in an internal EGR amount accompanying actuation of a variable valve actuation mechanism used in an internal combustion engine. The electronic control unit computes a base correction amount AVVTb based on an engine speed NE and an engine load ratio KL. The control unit multiplies the base correction amount AVVTb by the ratio of a square number of an actual valve overlap amount realOL to a square number of a target valve overlap amount tOL, thereby computing a VVT correction amount AVVT of ignition timing. As result, the engine is easily and properly controlled based on the relationship between the state of the variable valve actuation mechanism and changes in the internal EGR amount.
摘要翻译： 电子控制单元根据内燃机中使用的可变气门致动机构的动作，根据内部EGR量的变化来修正点火正时。 电子控制单元基于发动机转速NE和发动机负荷比KL计算基准校正量AVVTb。 控制单元将基准校正量AVVTb乘以实际阀重叠量realOL的平方数与目标阀重叠量tOL的平方数的比，从而计算点火正时的VVT校正量AVVT。 结果，基于可变气门致动机构的状态与内部EGR量的变化之间的关系容易且适当地控制发动机。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.017 秒)
