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公开(公告)号：US06997161B2
公开(公告)日：2006-02-14
申请号：US10854292
申请日：2004-05-27
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
CPC分类号： F02D41/18 , F02D13/0211 , F02D41/0002 , F02D41/042 , F02D41/08 , F02D41/123 , F02D41/2464 , F02D2041/001 , F02D2200/0402 , F02D2200/0406 , Y02T10/18 , Y02T10/42
摘要： A control apparatus for controlling an internal combustion engine includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change in the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a control unit capable of correcting a control amount of the internal combustion engine so as to compensate the characteristic change thereof in accordance with an estimation performed by the characteristic change estimation unit. The control unit updates a correction amount representative of the control amount corrected by the control unit when the internal combustion engine is in a predetermined operation state.
摘要翻译： 用于控制内燃机的控制装置包括：流量传感器，其检测表示进入内燃机的燃烧室的空气的流量的进气流量;检测进入的空气的压力的压力传感器 特征变化估计单元，其根据由流量传感器检测到的进气流量和由压力传感器检测到的进气压力来估计内燃机的特性变化， 以及控制单元，其能够根据由特征变化估计单元执行的估计来校正内燃机的控制量以便补偿其特性变化。 当内燃机处于预定操作状态时，控制单元更新表示由控制单元校正的控制量的校正量。
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公开(公告)号：US20050010354A1
公开(公告)日：2005-01-13
申请号：US10854712
申请日：2004-05-27
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
IPC分类号： F02M25/08 , F01L13/00 , F02D13/02 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/14 , F02D41/18 , F02D41/30 , F02D43/00 , F02D45/00
CPC分类号： F02D41/182 , F01L3/00 , F01L9/04 , F01L13/0015 , F01L2009/0426 , F01L2800/00 , F02D41/0002 , F02D41/0055 , F02D41/2422 , F02D41/2464 , F02D2041/001
摘要： A control apparatus for an internal combustion engine provided with a fuel supply mechanism capable of adjusting a fuel supply amount includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change of the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a fuel supply mechanism control unit that controls the fuel supply mechanism. The fuel supply mechanism control unit controls the fuel supply mechanism such that the characteristic change in the internal combustion engine is compensated in accordance with an estimation performed by the characteristic change estimation unit.
摘要翻译： 具有能够调节燃料供给量的燃料供给机构的内燃机的控制装置包括流量传感器，其检测表示进入内燃机的燃烧室的空气的流量的进气流量 检测进入到内燃机的燃烧室的空气的压力的压力传感器，根据由流量检测出的进气流量来估计内燃机的特性变化的特性变化估计单元 传感器和由压力传感器检测到的进气压力，以及控制燃料供给机构的燃料供给机构控制单元。 燃料供给机构控制单元控制燃料供给机构，使得根据由特征变化估计单元执行的估计来补偿内燃机的特性变化。
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公开(公告)号：US20050000489A1
公开(公告)日：2005-01-06
申请号：US10854292
申请日：2004-05-27
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
IPC分类号： F02D45/00 , F02D13/02 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/08 , F02D41/12 , F02D41/14 , F02D41/18 , F02D41/24
CPC分类号： F02D41/18 , F02D13/0211 , F02D41/0002 , F02D41/042 , F02D41/08 , F02D41/123 , F02D41/2464 , F02D2041/001 , F02D2200/0402 , F02D2200/0406 , Y02T10/18 , Y02T10/42
摘要： A control apparatus for controlling an internal combustion engine includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change in the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a control unit capable of correcting a control amount of the internal combustion engine so as to compensate the characteristic change thereof in accordance with an estimation performed by the characteristic change estimation unit. The control unit updates a correction amount representative of the control amount corrected by the control unit when the internal combustion engine is in a predetermined operation state.
摘要翻译： 用于控制内燃机的控制装置包括：流量传感器，其检测表示进入内燃机的燃烧室的空气的流量的进气流量;检测进入的空气的压力的压力传感器 特征变化估计单元，其根据由流量传感器检测到的进气流量和由压力传感器检测到的进气压力来估计内燃机的特性变化， 以及控制单元，其能够根据由特征变化估计单元执行的估计来校正内燃机的控制量以便补偿其特性变化。 当内燃机处于预定操作状态时，控制单元更新表示由控制单元校正的控制量的校正量。
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公开(公告)号：US20090044611A1
公开(公告)日：2009-02-19
申请号：US12232236
申请日：2008-09-12
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
IPC分类号： G01M15/04
CPC分类号： F02D41/182 , F01L3/00 , F01L9/04 , F01L13/0015 , F01L2009/0426 , F01L2800/00 , F02D41/0002 , F02D41/0055 , F02D41/2422 , F02D41/2464 , F02D2041/001
摘要： A control apparatus for an internal combustion engine provided with a fuel supply mechanism capable of adjusting a fuel supply amount includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change of the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a fuel supply mechanism control unit that controls the fuel supply mechanism. The fuel supply mechanism control unit controls the fuel supply mechanism such that the characteristic change in the internal combustion engine is compensated in accordance with an estimation performed by the characteristic change estimation unit.
摘要翻译： 具有能够调节燃料供给量的燃料供给机构的内燃机的控制装置包括流量传感器，其检测表示进入内燃机的燃烧室的空气的流量的进气流量 检测进入到内燃机的燃烧室的空气的压力的压力传感器，根据由流量检测出的进气流量来估计内燃机的特性变化的特性变化估计单元 传感器和由压力传感器检测到的进气压力，以及控制燃料供给机构的燃料供给机构控制单元。 燃料供给机构控制单元控制燃料供给机构，使得根据由特征变化估计单元执行的估计来补偿内燃机的特性变化。
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公开(公告)号：US20070021900A1
公开(公告)日：2007-01-25
申请号：US11527689
申请日：2006-09-27
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
CPC分类号： F02D41/182 , F01L3/00 , F01L9/04 , F01L13/0015 , F01L2009/0426 , F01L2800/00 , F02D41/0002 , F02D41/0055 , F02D41/2422 , F02D41/2464 , F02D2041/001
摘要： A control apparatus for an internal combustion engine provided with a fuel supply mechanism capable of adjusting a fuel supply amount includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change of the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a fuel supply mechanism control unit that controls the fuel supply mechanism. The fuel supply mechanism control unit controls the fuel supply mechanism such that the characteristic change in the internal combustion engine is compensated in accordance with an estimation performed by the characteristic change estimation unit.
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公开(公告)号：US07162356B2
公开(公告)日：2007-01-09
申请号：US10854712
申请日：2004-05-27
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
CPC分类号： F02D41/182 , F01L3/00 , F01L9/04 , F01L13/0015 , F01L2009/0426 , F01L2800/00 , F02D41/0002 , F02D41/0055 , F02D41/2422 , F02D41/2464 , F02D2041/001
摘要： A control apparatus for an internal combustion engine provided with a fuel supply mechanism capable of adjusting a fuel supply amount includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change of the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a fuel supply mechanism control unit that controls the fuel supply mechanism. The fuel supply mechanism control unit controls the fuel supply mechanism such that the characteristic change in the internal combustion engine is compensated in accordance with an estimation performed by the characteristic change estimation unit.
摘要翻译： 具有能够调节燃料供给量的燃料供给机构的内燃机的控制装置包括流量传感器，其检测表示进入内燃机的燃烧室的空气的流量的进气流量 检测进入到内燃机的燃烧室的空气的压力的压力传感器，根据由流量检测出的进气流量来估计内燃机的特性变化的特性变化估计单元 传感器和由压力传感器检测到的进气压力，以及控制燃料供给机构的燃料供给机构控制单元。 燃料供给机构控制单元控制燃料供给机构，使得根据由特征变化估计单元执行的估计来补偿内燃机的特性变化。
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公开(公告)号：US07451036B2
公开(公告)日：2008-11-11
申请号：US11527689
申请日：2006-09-27
申请人： Naohide Fuwa , Hisayo Dohta
发明人： Naohide Fuwa , Hisayo Dohta
CPC分类号： F02D41/182 , F01L3/00 , F01L9/04 , F01L13/0015 , F01L2009/0426 , F01L2800/00 , F02D41/0002 , F02D41/0055 , F02D41/2422 , F02D41/2464 , F02D2041/001
摘要： A control apparatus for an internal combustion engine provided with a fuel supply mechanism capable of adjusting a fuel supply amount includes a flow rate sensor that detects an intake air flow rate that represents a flow rate of air admitted into a combustion chamber of the internal combustion engine, a pressure sensor that detects a pressure of the air admitted into the combustion chamber of the internal combustion engine, a characteristic change estimation unit that estimates a characteristic change of the internal combustion engine in accordance with the intake air flow rate detected by the flow rate sensor and the intake air pressure detected by the pressure sensor, and a fuel supply mechanism control unit that controls the fuel supply mechanism. The fuel supply mechanism control unit controls the fuel supply mechanism such that the characteristic change in the internal combustion engine is compensated in accordance with an estimation performed by the characteristic change estimation unit.
摘要翻译： 具有能够调节燃料供给量的燃料供给机构的内燃机的控制装置包括流量传感器，其检测表示进入内燃机的燃烧室的空气的流量的进气流量 检测进入到内燃机的燃烧室的空气的压力的压力传感器，根据由流量检测出的进气流量来估计内燃机的特性变化的特性变化估计单元 传感器和由压力传感器检测到的进气压力，以及控制燃料供给机构的燃料供给机构控制单元。 燃料供给机构控制单元控制燃料供给机构，使得根据由特征变化估计单元执行的估计来补偿内燃机的特性变化。
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公开(公告)号：US6082337A
公开(公告)日：2000-07-04
申请号：US113281
申请日：1998-07-10
申请人： Takeshi Fujimoto , Masaaki Nakayama , Yasuo Mukai , Hisayo Dohta , Keiji Wakahara , Junya Morikawa , Makoto Miwa
发明人： Takeshi Fujimoto , Masaaki Nakayama , Yasuo Mukai , Hisayo Dohta , Keiji Wakahara , Junya Morikawa , Makoto Miwa
CPC分类号： F02M25/0809
摘要： When a diagnosis execution condition is established, a canister closure valve is closed, thereafter, a purge control valve is opened, a purge control valve is closed in a state where negative pressure is introduced into an evaporated gas system to thereby maintain the evaporated gas system in a hermetically-sealed state and the hermetically-sealed state is continued until abnormality diagnosis is finished. Time period for maintaining the evaporated gas system in the hermetically-sealed state is divided into three time periods of a pressure change determining time period at a first time, an awaiting time period and a pressure change determining time period at a second time. After determining a pressure change amount DPT1 of the evaporated gas system in the pressure change determining time period at the first time, the evaporated gas system is successively maintained in the hermetically-sealed state, after the predetermined awaiting time period has elapsed, the pressure change determination at the second time is carried out by which a pressure change amount DPT2 of the evaporated gas system is determined. Further, presence or absence of leakage of the evaporated gas system is diagnosed by comparing the pressure change amount DPT1 at the first time with the pressure change amount DPT2 at the second time.
摘要翻译： 当建立诊断执行条件时，关闭罐关闭阀，此后打开净化控制阀，在将负压引入蒸发气体系统中的状态下关闭净化控制阀，从而保持蒸发气体系统 在气密密封状态下，气密密封状态持续直到异常诊断完成。 用于将蒸发气体系统保持在气密密封状态的时间段被分为在第一时间的压力变化确定时间段，等待时间段和第二时间的压力变化确定时间段的三个时间段。 在第一次在压力变化确定时间段内确定蒸发气体系统的压力变化量DPT1之后，蒸发气体系统依次保持在气密密封状态，在经过预定的等待时间之后，压力变化 进行第二次的测定，确定蒸发气体系统的压力变化量DPT2。 此外，通过将第一次的压力变化量DPT1与第二次的压力变化量DPT2进行比较来诊断蒸发气体系统的泄漏的存在或不存在。
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公开(公告)号：US5845489A
公开(公告)日：1998-12-08
申请号：US743741
申请日：1996-11-07
申请人： Hisayo Dohta , Shigenori Isomura , Katsuhiko Kawai
发明人： Hisayo Dohta , Shigenori Isomura , Katsuhiko Kawai
CPC分类号： F02D41/1441 , F01N11/00 , F01N11/007 , F01N2550/02 , F01N2550/14 , F01N2900/0421 , F02D41/1456 , Y02T10/47
摘要： An inflow quantity of an exhaust gas component flowing into a catalyst is calculated based upon air fuel ratio detected by an upstream air fuel ratio sensor which is provided on the upstream side of the catalyst. In addition, an outflow quantity of an exhaust gas component flowing out of the catalyst is calculated based upon air fuel ratio detected by a downstream air fuel ratio sensor which is provided on the downstream side of the catalyst. The quantity of an exhaust gas component absorbed by the catalyst can be detected in real time based upon a difference between the inflow quantity and outflow quantity. Thus, a state of the catalyst can be precisely detected in real time.
摘要翻译： 基于设置在催化剂的上游侧的上游空燃比传感器检测出的空燃比，计算流入催化剂的废气成分的流入量。 此外，基于设置在催化剂下游侧的下游空燃比传感器检测出的空燃比，计算出从催化剂流出的废气成分的流出量。 可以基于流入量和流出量之间的差异实时地检测催化剂吸收的废气成分的量。 因此，可以实时精确地检测催化剂的状态。
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10.发明授权公开(公告)号：US06397830B1
公开(公告)日：2002-06-04
申请号：US09645493
申请日：2000-08-25
申请人： Hisayo Dohta
发明人： Hisayo Dohta
IPC分类号： F02D4118
CPC分类号： F02D41/1402 , F02D41/1473 , F02D41/187 , F02D2041/1422 , F02D2041/1433 , F02D2200/0402 , F02D2250/12
摘要： An internal combustion engine is simulated as a control model that covers from a fuel injection point to an air-fuel ratio detection point. A response time constant of the control model is calculated as a continuous function of the amount of intake air, and a control gain of the control model is calculated as a continuous function of the response time constant. Control parameters of the control model are calculated using a calculation interval, the response time constant, an attenuation coefficient and the control gain. Thus, the control parameters are varied continuously in response to changes in the intake air amount. The air-fuel correction coefficient is calculated using the control parameters a0, a1, a2, b1 and b2 as well as a deviation of an actual air-fuel ratio from a target air-fuel ratio. The amount of fuel supplied to the engine is calculated using the air-fuel ratio correction coefficient.
摘要翻译： 内燃机被模拟为从燃料喷射点到空燃比检测点的控制模型。 将控制模型的响应时间常数计算为进气量的连续函数，并将控制模型的控制增益计算为响应时间常数的连续函数。 使用计算间隔，响应时间常数，衰减系数和控制增益来计算控制模型的控制参数。 因此，响应于进气量的变化，控制参数连续变化。 使用控制参数a0，a1，a2，b1，b2以及实际空燃比与目标空燃比的偏差来计算空燃比校正系数。 使用空燃比校正系数计算供给发动机的燃料量。
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