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    • 84. 发明授权
    • Air-fuel ratio control system for internal combustion engines
    • 内燃机空燃比控制系统
    • US5845491A
    • 1998-12-08
    • US833131
    • 1997-04-04
    • Yuji YasuiShusuke AkazakiKohei Hanada
    • Yuji YasuiShusuke AkazakiKohei Hanada
    • F02D45/00F01N3/24F02D41/14G05B13/02
    • G05B13/0255F02D41/1403F02D41/1441F02D2041/1409F02D2041/1415F02D2041/1416F02D2041/1418F02D2041/142F02D2041/1426F02D2041/1431F02D2041/1433F02D2250/12F02D41/1402F02D41/1456
    • An air-fuel control system for use with an internal combustion engine has a catalytic converter in an exhaust system of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, and a second exhaust gas sensor in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter. A sliding mode controller determines a correction quantity at a first period to correct the air-fuel ratio of the engine so as to equalize the concentration of the component downstream of the catalytic converter to a predetermined appropriate value, according to a sliding mode control process based on the output from the second exhaust gas sensor. A feedback controller determines a correction quantity at a second period for a rate at which fuel is supplied to the engine so as to converge the concentration of the component downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity to correct the air-fuel ratio and the output from the first exhaust gas sensor, and feedback-controls the rate at which fuel is supplied to the engine with the determined correction quantity. The first and second periods are established separately from each other.
    • 一种与内燃机一起使用的空气燃料控制系统,在发动机的排气系统中具有催化转化器,用于净化从发动机排出的废气,用于检测空气燃料的排气系统中的第一废气传感器 催化转化器上游排气的比例和排气系统中的第二废气传感器,用于检测催化转化器下游已经通过催化转化器的废气的组分浓度。 滑动模式控制器在第一时段确定校正量,以校正发动机的空燃比,以使催化转化器下游的组分的浓度相等于预定的适当值,根据滑动模式控制过程为基础 在第二排气传感器的输出上。 反馈控制器基于校正量确定燃料被提供给发动机的速率的第二时间段的校正量,以便将催化转化器下游的组分的浓度朝向预定的适当值收敛,以校正 空燃比和第一废气传感器的输出,并且以确定的校正量反馈控制向发动机供应燃料的速率。 第一和第二个时期是彼此分开建立的。
    • 85. 发明授权
    • Fuel supply control system for internal combustion engines
    • 内燃机燃油供应控制系统
    • US5701871A
    • 1997-12-30
    • US575070
    • 1995-12-19
    • Hiroki MunakataYoichi NishimuraHiroshi KitagawaShusuke Akazaki
    • Hiroki MunakataYoichi NishimuraHiroshi KitagawaShusuke Akazaki
    • F02D41/04F02D41/06F02D41/14
    • F02D41/047
    • A fuel supply control system for an internal combustion engine calculates a basic amount of fuel to be supplied to the engine, based on the rotational speed of the engine and load on the engine. An amount of fuel adhering to the inner wall surface of the intake passage of the engine is estimated to calculate an adherent fuel-dependent correction amount. An amount of fuel carried off from the inner wall surface of the intake passage into at least one combustion chamber of the engine is estimated to calculate a carried-off fuel-dependent correction amount. The basic amount of fuel is corrected such that the air-fuel ratio of a mixture supplied to the engine becomes equal to a desired air-fuel ratio determined depending on operating conditions of the engine to obtain a corrected basic fuel amount, and at the same time the corrected basic fuel amount is corrected by the use of the adherent fuel-dependent correction amount and the carried-off fuel-dependent correction amount to calculate an amount of fuel to be supplied to the engine. At least one of the adherent fuel-dependent correction amount and the carried-off fuel-dependent correction amount is corrected according to the desired air-fuel ratio.
    • 用于内燃机的燃料供给控制系统基于发动机的转速和发动机的负荷来计算供给发动机的基本燃料量。 估计附着在发动机的进气通路的内壁面上的燃料的量来计算粘附燃料相关的校正量。 从进气通道的内壁表面传送到发动机的至少一个燃烧室中的燃料量被估计为计算取决于燃料的燃料相关校正量。 燃料的基本量被校正为使得提供给发动机的混合物的空燃比变得等于根据发动机的操作条件确定的期望的空燃比以获得校正的基本燃料量,并且在相同的情况下 通过使用粘附燃料依赖性校正量和排除燃料相关校正量来校正校正的基本燃料量,以计算要供给到发动机的燃料量。 根据所需的空燃比校正粘附燃料依赖性校正量和排除燃料依赖校正量中的至少一个。
    • 86. 发明授权
    • Air-fuel ratio control system for internal combustion engines
    • 内燃机空燃比控制系统
    • US5657627A
    • 1997-08-19
    • US517857
    • 1995-08-22
    • Shusuke AkazakiKotaro MiyashitaKen OgawaYoshihisa Hara
    • Shusuke AkazakiKotaro MiyashitaKen OgawaYoshihisa Hara
    • F02D41/14
    • F02D41/1441F02B2275/18F02D41/1456
    • An air-fuel ratio control system for an internal combustion engine having at least one catalytic converter arranged in the exhaust passage, comprises an ECU which changes air intake characteristics of the engine, based on operating conditions of the engine, and a plurality of exhaust gas component concentration sensors including at least upstream and downstream exhaust gas component concentration sensors arranged in the exhaust passage at respective locations upstream and downstream of the at least one catalytic converter. The air-fuel ratio of an air-fuel mixture to be supplied to the engine is controlled to a desired air-fuel ratio in a feedback manner responsive to an output from the upstream exhaust gas component concentration sensor. A feedback control parameter for use in the air-fuel ratio feedback control is calculated based on an output from the downstream exhaust gas component concentration sensor. The updating rate of the feedback control parameter is changed when the feedback control parameter is calculated, according to the air intake characteristics of the engine.
    • 一种用于内燃机的空燃比控制系统,其具有布置在排气通道中的至少一个催化转化器,包括基于发动机的运行条件改变发动机的进气特性的ECU,以及多个废气 组分浓度传感器至少包括在所述至少一个催化转化器的上游和下游的相应位置处布置在所述排气通道中的上游和下游排气组分浓度传感器。 供应到发动机的空气燃料混合物的空燃比以响应于上游排气组分浓度传感器的输出的反馈方式被控制到期望的空燃比。 基于来自下游侧废气成分浓度传感器的输出,计算用于空燃比反馈控制的反馈控制参数。 根据发动机的进气特性,计算反馈控制参数时,反馈控制参数的更新率发生变化。
    • 87. 发明授权
    • In-cylinder pressure detecting device of direct injection type internal combustion engine
    • 直喷式内燃机缸内压力检测装置
    • US09587612B2
    • 2017-03-07
    • US13985143
    • 2012-02-20
    • Shusuke AkazakiYuji YamamotoToshitaka HachiroGaku Sato
    • Shusuke AkazakiYuji YamamotoToshitaka HachiroGaku Sato
    • F02M69/00F02D35/02F02M57/00F02B23/10G01L23/10F02M61/14F02B75/12
    • F02M69/00F02B23/104F02B2075/125F02D35/023F02M57/005F02M61/14F02M2200/247G01L23/10Y02T10/123Y02T10/125
    • An in-cylinder pressure detecting device of a direct injection type internal combustion engine is provided in which a ring-shaped pressure detection element (34) surrounding a fuel injection hole (33b) is provided in the vicinity of an extremity of an injector (20) that injects fuel into a combustion chamber. Since the pressure detection element is provided on the injector, not only is it unnecessary to change the shape or structure of the cylinder head or the combustion chamber in order to provide the pressure detection element, but it is also possible to cool the pressure detection element (34) by fuel passing through the inside of the injector to thus enhance the precision of pressure detection and the durability. Further, since the ring-shaped pressure detection element (34) surrounds the periphery of the fuel injection hole (33b), it is possible to maximize the dimensions of the pressure detection element (34) to thus further enhance the precision of pressure detection while avoiding interference between the pressure detection element (34) and fuel injected via the fuel injection hole (33b).
    • 提供一种直喷式内燃机的缸内压力检测装置,其中,在喷射器(20)的末端附近设置围绕燃料喷射孔(33b)的环状压力检测元件(34) )将燃料喷射到燃烧室中。 由于压力检测元件设置在喷射器上,为了提供压力检测元件,不仅不需要改变气缸盖或燃烧室的形状或结构,而且还可以将压力检测元件 (34)通过喷射器内部的燃料,从而提高压力检测的精度和耐久性。 此外,由于环状压力检测元件34围绕燃料喷射孔33b的周围,所以能够使压力检测元件34的尺寸最大化,能够进一步提高压力检测的精度, 避免压力检测元件(34)与经由燃料喷射孔(33b)喷射的燃料之间的干扰。
    • 88. 发明授权
    • Ignition timing control system for internal combustion engine
    • 内燃机点火正时控制系统
    • US08024107B2
    • 2011-09-20
    • US11896203
    • 2007-08-30
    • Takahide MizunoShusuke AkazakiTetsuya Ishiguro
    • Takahide MizunoShusuke AkazakiTetsuya Ishiguro
    • F02P5/153
    • F02P5/153F02D35/023F02D35/028F02D2041/1432F02P5/1504Y02T10/46
    • An ignition timing control system for an internal combustion engine, which is capable of ensuring both stability of control in a steady operating condition of the engine, and an excellent follow-up property of a controlled variable to a target value in a transient operating condition of the engine, even when the controlled variable contains a lot of high-frequency noise components. In the ignition timing control system, a maximum pressure angle-calculating section calculates a maximum pressure angle based on an in-cylinder pressure and a crank angle position. A target angle-calculating section calculates a target angle. A maximum pressure angle controller calculates a maximum pressure angle correction term with a control algorithm to which is applied a sliding mode control algorithm, using a value obtained by performing ε-filtering on a switching function, such that the maximum pressure angle converges to the target angle. The ignition timing is calculated by adding corrected ignition timing to the value.
    • 一种用于内燃机的点火正时控制系统,其能够确保在发动机的稳定运行状态下的控制的稳定性,以及在瞬态运行状态下控制变量与目标值的良好追随性 发动机,即使受控变量包含大量的高频噪声分量。 在点火正时控制系统中,最大压力角计算部根据缸内压力和曲柄角位置来计算最大压力角。 目标角度计算部分计算目标角度。 最大压力角控制器利用控制算法计算最大压力角校正项,该控制算法应用滑动模式控制算法,使用通过对切换功能进行过滤获得的值,使得最大压力角收敛于 目标角度。 通过将校正的点火正时与该值相加来计算点火正时。
    • 90. 发明申请
    • Control for determining a firing timing of an internal-combustion engine
    • 用于确定内燃机的点火正时的控制
    • US20090055074A1
    • 2009-02-26
    • US12222782
    • 2008-08-15
    • Tetsuya IshiguroShusuke AkazakiYuji Yamamoto
    • Tetsuya IshiguroShusuke AkazakiYuji Yamamoto
    • F02D45/00
    • F02D35/024F02D35/023F02D35/028F02D41/2416F02D41/34F02P5/00F02P7/06
    • A control for determining a firing timing of an engine is provided. An in-cylinder pressure is detected at a predetermined time interval. An in-cylinder pressure for every predetermined crank angle is calculated based on the detected in-cylinder pressure. A motoring pressure in a case where combustion is not performed in the engine is estimated. It is detected that a pressure difference between the calculated in-cylinder pressure and the motoring pressure has exceeded a determination value. A time point is identified, as a firing timing, at which the pressure difference has exceeded a determination value with a finer resolution than the resolution of the predetermined crank angle interval through an interpolation calculation. The interpolation calculation uses a first crank angle when it is detected that the pressure difference has exceeded the determination value, the pressure difference corresponding to the first crank angle, a second crank angle previous to the first crank angle by the predetermined crank angle and a pressure difference corresponding to the second crank angle.
    • 提供了一种用于确定发动机的点火正时的控制。 以预定的时间间隔检测缸内压力。 基于检测到的缸内压力计算每个预定曲柄角的缸内压力。 估计在发动机不进行燃烧的情况下的驾驶压力。 检测出计算出的缸内压力和驾驶压力之间的压力差超过了确定值。 通过内插计算,将时间点识别为具有比通过预定的曲柄角间隔的分辨率更精细的分辨率的压力差超过确定值的点火时刻。 当检测到压力差已经超过确定值,对应于第一曲柄角的压力差,第一曲柄角之前的预定曲柄角的第二曲柄角和压力时,插值计算使用第一曲柄角 差异对应于第二曲柄角度。