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公开(公告)号：US20060090456A1
公开(公告)日：2006-05-04
申请号：US11196422
申请日：2005-08-04
申请人： Hideaki Tani , Kuen Yehliu , Keiichi Enoki , Tadahiro Azuma
发明人： Hideaki Tani , Kuen Yehliu , Keiichi Enoki , Tadahiro Azuma
IPC分类号： F01N3/00
CPC分类号： F01N11/007 , Y02T10/22 , Y02T10/47
摘要： A control apparatus for an internal combustion engine can detect degradation of a three-way catalyst with high accuracy without causing deterioration in an exhaust. A pair of first and second air fuel ratio detectors are disposed in an exhaust system at locations upstream and downstream of the three-way catalyst for detecting a first and a second air fuel ratio of an exhaust gas. A target oxygen change amount calculator calculates a target oxygen change amount of the three-way catalyst, and an oxygen change amount calculator calculates an oxygen change amount of the three-way catalyst from an amount of exhaust gas passing through the three-way catalyst and the first air fuel ratio. An air fuel ratio operator inversely controls the air fuel ratio to a rich side and a lean side with a prescribed air fuel ratio width each time the oxygen change amount reaches a target oxygen change amount.
摘要翻译： 内燃机的控制装置可以高精度地检测三元催化剂的劣化，而不会引起排气的劣化。 一对第一和第二空燃比检测器设置在用于检测排气的第一和第二空气燃料比的三元催化剂的上游和下游的排气系统中。 目标氧气变化量计算器计算三元催化剂的目标氧气变化量，氧气变化量计算器根据通过三元催化剂的排气量和三元催化剂的氧气换算量， 第一空燃比。 每当氧气变化量达到目标氧气变化量时，空燃比运算符反向控制具有规定空燃比宽度的富侧和稀侧的空燃比。
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公开(公告)号：US07168240B2
公开(公告)日：2007-01-30
申请号：US11196422
申请日：2005-08-04
申请人： Hideaki Tani , Kuen Yehliu , Keiichi Enoki , Tadahiro Azuma
发明人： Hideaki Tani , Kuen Yehliu , Keiichi Enoki , Tadahiro Azuma
IPC分类号： F01N3/00
CPC分类号： F01N11/007 , Y02T10/22 , Y02T10/47
摘要： A control apparatus for an internal combustion engine can detect degradation of a three-way catalyst with high accuracy without causing deterioration in an exhaust. A pair of first and second air fuel ratio detectors are disposed in an exhaust system at locations upstream and downstream of the three-way catalyst for detecting a first and a second air fuel ratio of an exhaust gas. A target oxygen change amount calculator calculates a target oxygen change amount of the three-way catalyst, and an oxygen change amount calculator calculates an oxygen change amount of the three-way catalyst from an amount of exhaust gas passing through the three-way catalyst and the first air fuel ratio. An air fuel ratio operator inversely controls the air fuel ratio to a rich side and a lean side with a prescribed air fuel ratio width each time the oxygen change amount reaches a target oxygen change amount.
摘要翻译： 内燃机的控制装置可以高精度地检测三元催化剂的劣化，而不会引起排气的劣化。 一对第一和第二空燃比检测器设置在用于检测排气的第一和第二空气燃料比的三元催化剂的上游和下游的排气系统中。 目标氧气变化量计算器计算三元催化剂的目标氧气变化量，氧气变化量计算器根据通过三元催化剂的排气量和三元催化剂的氧气换算量， 第一空燃比。 每当氧气变化量达到目标氧气变化量时，空燃比运算符反向控制具有规定空燃比宽度的富侧和稀侧的空燃比。
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公开(公告)号：US07293404B2
公开(公告)日：2007-11-13
申请号：US11326403
申请日：2006-01-06
申请人： Keiichi Enoki , Kuen Yehliu
发明人： Keiichi Enoki , Kuen Yehliu
IPC分类号： F01N3/00
CPC分类号： F02D41/1441 , F01N11/007 , F01N2900/0422 , F02D41/0235 , F02D41/1488 , F02D41/22 , F02D41/2454 , Y02T10/47
摘要： A device includes: downstream air-fuel ratio feedback control unit that performs feedback control of an upstream target air-fuel ratio so that a downstream air-fuel ratio detected by a downstream air-fuel ratio detecting unit coincides with a downstream target air-fuel ratio; a target air-fuel ratio varying unit that varies the upstream target air-fuel ratio at the time of diagnosing degradation of a ternary catalyst; and a catalyst degradation judging unit that judges catalyst degradation from the behavior of the downstream air-fuel ratio at the time of diagnosing degradation of the ternary catalyst. When diagnosing degradation of the ternary catalyst, the downstream air-fuel ratio feedback control unit is stopped or its control constant is set at a smaller value. Thus, when varying the air-fuel ratio for diagnosing catalyst degradation, interference between downstream air-fuel ratio feedback and upstream air-fuel ratio feedback is prevented and catalyst degradation is accurately diagnosed.
摘要翻译： 一种装置包括：下游空燃比反馈控制单元，其执行上游目标空燃比的反馈控制，使得由下游空燃比检测单元检测的下游空燃比与下游目标空气燃料 比; 目标空燃比变化单元，其在诊断三元催化剂的劣化时改变上游目标空燃比; 以及催化剂劣化判定单元，其在诊断三元催化剂的劣化时，根据下游空燃比的行为来判定催化剂劣化。 当诊断三元催化剂的劣化时，下游空燃比反馈控制单元停止或将其控制常数设定为较小的值。 因此，当改变用于诊断催化剂劣化的空燃比时，防止下游空燃比反馈与上游空燃比反馈之间的干扰，并且精确地诊断催化剂劣化。
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公开(公告)号：US20070033924A1
公开(公告)日：2007-02-15
申请号：US11326403
申请日：2006-01-06
申请人： Keiichi Enoki , Kuen Yehliu
发明人： Keiichi Enoki , Kuen Yehliu
CPC分类号： F02D41/1441 , F01N11/007 , F01N2900/0422 , F02D41/0235 , F02D41/1488 , F02D41/22 , F02D41/2454 , Y02T10/47
摘要： A device includes: downstream air-fuel ratio feedback control unit that performs feedback control of an upstream target air-fuel ratio so that a downstream air-fuel ratio detected by a downstream air-fuel ratio detecting unit coincides with a downstream target air-fuel ratio; a target air-fuel ratio varying unit that varies the upstream target air-fuel ratio at the time of diagnosing degradation of a ternary catalyst; and a catalyst degradation judging unit that judges catalyst degradation from the behavior of the downstream air-fuel ratio at the time of diagnosing degradation of the ternary catalyst. When diagnosing degradation of the ternary catalyst, the downstream air-fuel ratio feedback control unit is stopped or its control constant is set at a smaller value. Thus, when varying the air-fuel ratio for diagnosing catalyst degradation, interference between downstream air-fuel ratio feedback and upstream air-fuel ratio feedback is prevented and catalyst degradation is accurately diagnosed.
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公开(公告)号：US06668813B2
公开(公告)日：2003-12-30
申请号：US10062444
申请日：2002-02-05
申请人： Tadahiro Azuma , Keiichi Enoki , Teruaki Kawakami
发明人： Tadahiro Azuma , Keiichi Enoki , Teruaki Kawakami
IPC分类号： F02D4100
CPC分类号： F02D41/027 , F01N3/28 , F01N13/009 , F02D41/1441 , F02D41/1454 , F02D41/40 , F02D2041/1422 , F02D2200/0408
摘要： An air-fuel ratio control device for an internal combustion engine is provided with: an air-fuel ratio sensor; an O2 sensor; a device for setting a reference air-fuel ratio target value; a device for setting a target value of an output value of the O2 sensor; a device for obtaining an air-fuel ratio target value correction value; a device for obtaining a forcible air-fuel ratio oscillation width target value; a device for computing an air-fuel ration target value; a device for computing a correction value; a device for obtaining a forcible air-fuel ratio oscillating width injector driving time correction value; and a device for setting injector driving time.
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公开(公告)号：US06640763B2
公开(公告)日：2003-11-04
申请号：US09964695
申请日：2001-09-28
申请人： Teruaki Kawakami , Tadahiro Azuma , Keiichi Enoki
发明人： Teruaki Kawakami , Tadahiro Azuma , Keiichi Enoki
IPC分类号： F02N1108
CPC分类号： F02N11/08 , F02N11/0848 , F02N2200/023 , F02N2300/2011
摘要： An apparatus for controlling starting of an internal combustion engine is arranged to reduce exhaust emissions and emission variations at engine startup. The starter is driven after a lapse of the predetermined period of time from the moment at which an engine starting command is operated, so that the engine can be started when sensors and actuators attached to the engine are in optimum conditions, thereby reducing exhaust emissions and emission variations. Also, after the engine has been cranked by driving the starter, the starter is stopped after a lapse of the predetermined time from the moment at which the number of engine revolutions becomes equal to or larger than a predetermined number of revolutions. Therefore the engine can be reliably set in a suitably started condition before the starter is turned off even if the engine is in a particular condition, e.g., an extremely-low-temperature condition such that combustion in the engine is unstable and the engine can stall easily.
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公开(公告)号：US06408825B1
公开(公告)日：2002-06-25
申请号：US09985854
申请日：2001-11-06
申请人： Keiichi Enoki , Tadahiro Azuma , Takeshi Kakigi
发明人： Keiichi Enoki , Tadahiro Azuma , Takeshi Kakigi
IPC分类号： F02M4100
CPC分类号： F02D41/042 , F02D41/3082 , F02D2041/225 , F02D2200/0602 , F02D2250/31
摘要： In an internal combustion engine system, a fuel injection control apparatus for preventing fuel leakage with high reliability in the engine-stopped state. The apparatus includes various types of sensors (5, 6, 14, 15) for detecting operation states of an internal combustion engine (1), a fuel pump (24) and a fuel supply pipe (22) for supplying a fuel from a fuel tank (23) to the engine (1), a fuel injector (8) for injecting the fuel into the engine, an engine stoppage detecting means for detecting a stopped state of the engine (1), a fuel temperature estimating means for estimating temperature of the fuel within the fuel supply pipe (22), and a fuel pressure lowering means for lowering pressure of the fuel within the fuel supply pipe (22). The fuel pressure lowering means is designed to lower pressure of the fuel within the fuel supply pipe (22) after the stoppage of operation of the engine (1) in dependence on an estimated fuel temperature determined by the fuel temperature estimating means.
摘要翻译： 在内燃机系统中，具有在发动机停止状态下以高可靠性防止燃料泄漏的燃料喷射控制装置。 该装置包括用于检测内燃机（1）的操作状态的各种类型的传感器（5,6,14,15），用于从燃料供给燃料的燃料泵（24）和燃料供给管（22） 发动机（1）的燃料箱（23），用于将燃料喷射到发动机中的燃料喷射器（8），用于检测发动机（1）的停止状态的发动机停止检测装置，用于估计温度的燃料温度估计装置 燃料供给管（22）内的燃料的燃料压力降低装置，以及用于降低燃料供给管（22）内的燃料的压力的燃料压力降低装置。 燃料压力降低装置被设计成根据由燃料温度估计装置确定的估计燃料温度，在发动机（1）停止运行之后降低燃料供给管（22）内的燃料的压力。
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公开(公告)号：US20070023021A1
公开(公告)日：2007-02-01
申请号：US11326334
申请日：2006-01-06
申请人： Tomohisa Shouda , Keiichi Enoki , Hideaki Tani
发明人： Tomohisa Shouda , Keiichi Enoki , Hideaki Tani
IPC分类号： F02D41/14
CPC分类号： F02D41/062 , F02D41/1454 , F02D41/148 , F02D41/1482 , F02D2200/602
摘要： At the time of start-up, fuel supply is made excessive. When air-fuel ratio feedback control is started while the fuel is excessive, the control is put into a state of overshoot or hunting, and it takes a long time to converge to the target air-fuel ratio. In an air-fuel ratio control apparatus, a selection switch is provided at the output of an integration calculation circuit to perform air-fuel ratio feedback control, and immediately after start-up of the engine, an upper/lower limit clip value for use immediately after start-up, which is smaller than a normal one, is selected to perform the air-fuel ratio feedback control. Even if the air-fuel ratio feedback control is started immediately after the start-up in a state where the fuel is excessive, the actual air-fuel ratio does not overshoot with respect to the target air-fuel ratio and is quickly converged to the target air-fuel ratio.
摘要翻译： 在启动时，供油过量。 当燃料过量时开始空燃比反馈控制时，控制进入过冲或起搏状态，并且需要很长时间才能达到目标空燃比。 在空燃比控制装置中，在积分计算电路的输出处设置选择开关，以执行空燃比反馈控制，并且在发动机启动之后立即使用上限/下限剪切值 选择小于正常启动后的起动后的空燃比反馈控制。 即使在燃料过大的状态下，在起动后立即开始空燃比反馈控制，实际空燃比相对于目标空燃比不会超调，并且迅速收敛于 目标空燃比。
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公开(公告)号：US07273040B2
公开(公告)日：2007-09-25
申请号：US11326334
申请日：2006-01-06
申请人： Tomohisa Shouda , Keiichi Enoki , Hideaki Tani
发明人： Tomohisa Shouda , Keiichi Enoki , Hideaki Tani
IPC分类号： F02D41/06
CPC分类号： F02D41/062 , F02D41/1454 , F02D41/148 , F02D41/1482 , F02D2200/602
摘要： At the time of start-up, fuel supply is made excessive. When air-fuel ratio feedback control is started while the fuel is excessive, the control is put into a state of overshoot or hunting, and it takes a long time to converge to the target air-fuel ratio. In an air-fuel ratio control apparatus, a selection switch is provided at the output of an integration calculation circuit to perform air-fuel ratio feedback control, and immediately after start-up of the engine, an upper/lower limit clip value for use immediately after start-up, which is smaller than a normal one, is selected to perform the air-fuel ratio feedback control. Even if the air-fuel ratio feedback control is started immediately after the start-up in a state where the fuel is excessive, the actual air-fuel ratio does not overshoot with respect to the target air-fuel ratio and is quickly converged to the target air-fuel ratio.
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公开(公告)号：US09628017B2
公开(公告)日：2017-04-18
申请号：US14429184
申请日：2012-10-11
CPC分类号： H02P29/67 , B60L3/12 , B60L2240/425 , B60L2240/427 , B60L2260/44 , H02P29/02 , H02P29/662 , Y02T10/642
摘要： In order to highly accurately estimate a temperature of a permanent magnet to be used for a rotor of a motor, provided is a motor control device for a vehicle including a motor as a drive power source, in which an estimation mode setting section sets, when a predetermined condition for estimating the temperature of the permanent magnet to be used for the rotor of the motor is established under a state in which the motor generates drive power to run the vehicle, a current flowing through the motor to 0, and a permanent magnet temperature estimation section estimates the temperature of the permanent magnet based on an induced voltage of the motor in a period during which the current flowing through the motor is 0.
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