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公开(公告)号：US07690339B2
公开(公告)日：2010-04-06
申请号：US11713750
申请日：2007-03-05
Applicant: Naohide Fuwa , Masashi Kishimoto
Inventor： Naohide Fuwa , Masashi Kishimoto
IPC: F01L1/34
CPC classification number: F01L13/0063 , F01L1/34 , F01L1/34403 , F01L1/352 , F01L13/0015 , F01L13/0031 , F01L2013/0073
Abstract: A variable valve timing and lift mechanism includes an actuator that adjusts the period in which an intake valve is held open by moving a drive element. When a control unit switches the duration, the control unit controls the actuator so that the duration is changed at a first speed when the duration is equal to a first value, and at a second speed when the duration is equal to a second value that is smaller than the first value. The absolute value of the second speed is smaller than the absolute value of the first speed. In effect, the actuator is controlled so that when the duration is in a short-duration range, the duration changes more slowly than when the duration is in a long-duration range.
Abstract translation: 可变气门正时和提升机构包括致动器，其通过移动驱动元件来调节进气门保持打开的时段。 当控制单元切换持续时间时，控制单元控制致动器，使得持续时间在持续时间等于第一值时以第一速度改变持续时间，并且当持续时间等于第二值时 小于第一个值。 第二速度的绝对值小于第一速度的绝对值。 实际上，致动器被控制，使得当持续时间处于短持续时间范围时，持续时间变化比持续时间长于持续时间范围的变化更慢。
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公开(公告)号：US07685978B2
公开(公告)日：2010-03-30
申请号：US11646272
申请日：2006-12-28
Applicant: Naohide Fuwa , Takashi Yanagizawa
Inventor： Naohide Fuwa , Takashi Yanagizawa
IPC: F01L1/34
CPC classification number: F01L13/0063 , F01L1/185 , F01L1/2405 , F01L1/344 , F01L2001/0537 , F01L2105/00 , F01L2800/00 , F01L2820/032 , F02D13/0207 , Y02T10/18
Abstract: A control device for a variable valve mechanism that avoids the overheating an actuator while reducing adverse effects on the driveability of a vehicle. The actuator adjusts the lift of an intake valve by moving a drive element, and a sensor is used to determine whether the actuator will overheat. A control unit stops the drive element if the lift adjusted by the actuator is equal to or larger than a first predetermined value, when the control unit determines that the actuator will overheat. The actuator may be an electric actuator. In this case, the actuator maintains the drive element in a fixed position when supply of electric power to the actuator is interrupted. The control unit stops the drive element, and interrupts the supply of electric power to the actuator.
Abstract translation: 一种用于可变气门机构的控制装置，其避免了致动器的过热，同时减少对车辆的驾驶能力的不利影响。 致动器通过移动驱动元件来调节进气阀的升程，并且使用传感器来确定执行器是否会过热。 如果由致动器调节的升程等于或大于第一预定值，则控制单元停止驱动元件，当控制单元确定致动器将过热时。 致动器可以是电致动器。 在这种情况下，当致动器的电力供应中断时，致动器将驱动元件保持在固定位置。 控制单元停止驱动元件，并中断对致动器的电力供应。
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3.发明授权公开(公告)号：US07424872B2
公开(公告)日：2008-09-16
申请号：US11035078
申请日：2005-01-14
Applicant: Naohide Fuwa , Harufumi Muto
Inventor： Naohide Fuwa , Harufumi Muto
IPC: F01L1/34
CPC classification number: F01L13/0063 , F01L1/185 , F01L13/0005 , F01L2105/00 , F01L2800/00 , F01L2800/01 , F01L2800/12 , F01L2820/033 , F01L2820/041 , F01L2820/042
Abstract: A failure diagnosis for a slide sensor of a variable valve mechanism is performed when a valve working angle is at a value in the initial state. The initial state is set to a valve characteristic state where the valve working angle is at the maximum value. The maximum valve working angle corresponds to the refuge running performable region in which an engine can be started and refuge running can be performed. Therefore, even when it is difficult to adjust the valve working angle using rotation of a spiral cam due to a failure in the slide sensor, the refuge running can be performed only by maintaining the initial state by maintaining control. It is thus possible to increase reliability of the refuge running in the case where a failure has occurred in the variable valve mechanism.
Abstract translation: 当阀工作角度处于初始状态的值时，执行可变气门机构的滑动传感器的故障诊断。 初始状态被设定为阀工作角为最大值的阀特性状态。 最大阀工作角度对应于能够启动发动机并可进行避难运行的避难所运行区域。 因此，即使由于滑动传感器的故障而难以通过螺旋凸轮的旋转来调节阀的工作角度，所以只能通过维持控制来维持初始状态来进行避难运行。 因此，在可变气门机构发生故障的情况下，可以提高避难运行的可靠性。
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4.发明授权公开(公告)号：US07316210B2
公开(公告)日：2008-01-08
申请号：US11360763
申请日：2006-02-24
Applicant: Naohide Fuwa
Inventor： Naohide Fuwa
IPC: F01L1/34
CPC classification number: F01L13/0015 , F01L2800/01 , F02D13/023 , F02D13/0261 , F02D41/042 , F02D41/06 , F02D2013/0292 , F02N19/004 , Y02T10/18
Abstract: An electronic control unit sets a target valve actuation parameter in accordance with an operating state of an internal combustion engine, and controls a variable valve actuation mechanism such that an actual valve actuation parameter of an intake valve becomes equal to the target valve actuation parameter. The variable valve actuation mechanism changes a valve actuation parameter of the intake valve. From before an initial fuel injection is performed to when a starting process of the engine is completed, the electronic control unit sets the target valve actuation parameter to an engine starting valve actuation parameter at which the valve closing timing of the intake valve coincides with or is close to a bottom dead center of the intake valve.
Abstract translation: 电子控制单元根据内燃机的运转状态来设定目标阀致动参数，并控制可变气门致动机构，使得进气门的实际气门致动参数等于目标气门致动参数。 可变阀致动机构改变进气门的阀致动参数。 从执行初始燃料喷射到发动机的起动过程完成之前，电子控制单元将目标阀致动参数设定为进气门关闭正时重合的发动机起动阀启动参数，或者是 靠近进气阀的下止点。
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公开(公告)号：US20070163525A1
公开(公告)日：2007-07-19
申请号：US11646272
申请日：2006-12-28
Applicant: Naohide Fuwa , Takashi Yanagizawa
Inventor： Naohide Fuwa , Takashi Yanagizawa
IPC: F01L1/34
CPC classification number: F01L13/0063 , F01L1/185 , F01L1/2405 , F01L1/344 , F01L2001/0537 , F01L2105/00 , F01L2800/00 , F01L2820/032 , F02D13/0207 , Y02T10/18
Abstract: A control device for a variable valve mechanism that avoids the overheating an actuator while reducing adverse effects on the driveability of a vehicle. The actuator adjusts the lift of an intake valve by moving a drive element, and a sensor is used to determine whether the actuator will overheat. A control unit stops the drive element if the lift adjusted by the actuator is equal to or larger than a first predetermined value, when the control unit determines that the actuator will overheat. The actuator may be an electric actuator. In this case, the actuator maintains the drive element in a fixed position when supply of electric power to the actuator is interrupted. The control unit stops the drive element, and interrupts the supply of electric power to the actuator.
Abstract translation: 一种用于可变气门机构的控制装置，其避免了致动器的过热，同时减少对车辆的驾驶能力的不利影响。 致动器通过移动驱动元件来调节进气阀的升程，并且使用传感器来确定执行器是否会过热。 如果由致动器调节的升程等于或大于第一预定值，则控制单元停止驱动元件，当控制单元确定致动器将过热时。 致动器可以是电致动器。 在这种情况下，当致动器的电力供应中断时，致动器将驱动元件保持在固定位置。 控制单元停止驱动元件，并中断对致动器的电力供应。
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Patent Agency Ranking
公开(公告)号：US07201139B2
公开(公告)日：2007-04-10
申请号：US11250429
申请日：2005-10-17
Applicant: Naohide Fuwa , Masanobu Kanamaru , Masaaki Konishi , Akinori Osanai , Satoru Watanabe , Masato Ehara
Inventor： Naohide Fuwa , Masanobu Kanamaru , Masaaki Konishi , Akinori Osanai , Satoru Watanabe , Masato Ehara
CPC classification number: F02D13/0215 , F01L1/022 , F01L1/34 , F01L1/3442 , F01L13/0042 , F01L2001/0537 , F01L2800/00 , F01L2820/041 , F02B2275/18 , F02D13/0253 , F02D13/0261 , F02D35/024 , F02D35/026 , F02D37/02 , F02D41/006 , F02D41/0062 , F02D2041/001 , F02D2041/0015 , F02M26/01 , F02P5/1504 , F02P5/1516 , Y02T10/18 , Y02T10/46 , Y02T10/47
Abstract: A device for controlling an internal combustion engine, comprising a variable valve mechanism for varying opening areas (valve lift) or the working angles (valve-opening periods) of at least either the intake valves or the exhaust valves, wherein a pressure in the cylinder is calculated based on the opening area or the working angle of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the pressure in the cylinder. Upon calculating the pressure in the cylinder based on the opening areas or the working angles of the intake and exhaust valves, it is possible to more suitably control the internal combustion engine based not only upon the peak combustion pressure in the cylinder like when a combustion pressure sensor is used but also upon a pressure in the cylinder at a moment other than the peak combustion pressure.
Abstract translation: 一种用于控制内燃机的装置，包括用于改变进气门或排气门中的至少任一个的开口面积（气门升程）或工作角度（阀打开周期）的可变气门机构，其中气缸中的压力 基于由可变气门机构变化的进气门或排气门中的至少一个的开口面积或工作角度来计算，并且基于气缸中的压力来控制内燃机。 在基于进气门和排气门的开口面积或工作角度计算气缸中的压力时，不仅可以基于气缸中的峰值燃烧压力更适当地控制内燃机，如同燃烧压力 传感器，而且在除了峰值燃烧压力之外的时刻，气缸中的压力也被使用。
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公开(公告)号：US07066146B2
公开(公告)日：2006-06-27
申请号：US11131404
申请日：2005-05-18
Applicant: Naohide Fuwa , Masanobu Kanamaru , Masaaki Konishi , Akinori Osanai , Satoru Watanabe , Masato Ehara
Inventor： Naohide Fuwa , Masanobu Kanamaru , Masaaki Konishi , Akinori Osanai , Satoru Watanabe , Masato Ehara
IPC: F02P5/00
CPC classification number: F02D13/0215 , F01L1/022 , F01L1/34 , F01L1/3442 , F01L13/0042 , F01L2001/0537 , F01L2800/00 , F01L2820/041 , F02B2275/18 , F02D13/0253 , F02D13/0261 , F02D35/024 , F02D35/026 , F02D37/02 , F02D41/006 , F02D41/0062 , F02D2041/001 , F02D2041/0015 , F02M26/01 , F02P5/1504 , F02P5/1516 , Y02T10/18 , Y02T10/46 , Y02T10/47
Abstract: A device for controlling an internal combustion engine, comprising a variable valve mechanism for varying opening areas (valve lift) or the working angles (valve-opening periods) of at least either the intake valves or the exhaust valves, wherein a pressure in the cylinder is calculated based on the opening area or the working angle of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the pressure in the cylinder. Upon calculating the pressure in the cylinder based on the opening areas or the working angles of the intake and exhaust valves, it is possible to more suitably control the internal combustion engine based not only upon the peak combustion pressure in the cylinder like when a combustion pressure sensor is used but also upon a pressure in the cylinder at a moment other than the peak combustion pressure.
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8.发明申请公开(公告)号：US20060081217A1
公开(公告)日：2006-04-20
申请号：US11249308
申请日：2005-10-14
Applicant: Naohide Fuwa , Harufumi Muto
Inventor： Naohide Fuwa , Harufumi Muto
CPC classification number: F02D13/023 , F01L1/34 , F01L13/0015 , F01L2800/00 , F02D13/0238 , F02D13/0261 , F02D41/18 , F02D41/222 , F02D2200/0402 , F02D2200/0408 , Y02T10/18 , Y02T10/40
Abstract: A valve characteristic estimation device applied to an internal combustion engine provided with a valve characteristic adjustment mechanism for varying a valve characteristic including at least one of a valve open period and a lift amount of an intake valve. The estimation device detects intake air amount and intake air pressure of the engine, and calculates an estimated value for the valve characteristic based on the detected values of the intake air amount and the intake air pressure. Accordingly, the valve characteristic of the intake valve is accurately estimated.
Abstract translation: 一种阀特性估计装置，其应用于具有阀特性调节机构的内燃机，所述阀特性调整机构用于改变阀特性，所述阀特性包括阀打开期间和进气阀的提升量中的至少一个。 估计装置检测发动机的进气量和进气压力，并且基于检测到的进气量和进气压力值来计算阀特性的估计值。 因此，准确地估计进气门的阀特性。
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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
Applicant: Naohide Fuwa , Hisayo Dohta
Inventor： Naohide Fuwa , Hisayo Dohta
CPC classification number: F02D41/18 , F02D13/0211 , F02D41/0002 , F02D41/042 , F02D41/08 , F02D41/123 , F02D41/2464 , F02D2041/001 , F02D2200/0402 , F02D2200/0406 , Y02T10/18 , Y02T10/42
Abstract: 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.
Abstract translation: 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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10.发明授权公开(公告)号：US06986330B2
公开(公告)日：2006-01-17
申请号：US10664914
申请日：2003-09-22
Applicant: Naohide Fuwa , Akira Ohata
Inventor： Naohide Fuwa , Akira Ohata
IPC: F01L1/34
CPC classification number: F02D13/0226 , F02D2200/0402 , Y02T10/18
Abstract: An internal combustion engine has a variable valve actuation device for lifting an intake valve. The device is capable of changing the amount of opening of the intake valve. The device is configured to calculate a first estimated value Gao of the amount of intake air from a parameter regarding the operation state of the engine at the time of opening the intake valve; calculate a second estimated value Gac of the amount of intake air from a parameter regarding the operation state of the engine at the time of closing the intake valve; and calculate an actual amount of intake air Ga based on the first estimated value and the second estimated value.
Abstract translation: 内燃机具有用于提升进气门的可变气门致动装置。 该装置能够改变进气门的打开量。 该装置被配置为从打开进气阀时的发动机的运转状态的参数计算进气量的第一估计值Gao; 根据关于进气门关闭时的发动机的运转状态的参数计算出进气量的第二推定值Gac; 并且基于第一估计值和第二估计值计算实际的进气量Ga。
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