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    • 3. 发明申请
    • CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 内燃机控制装置
    • US20140048038A1
    • 2014-02-20
    • US13884193
    • 2011-04-28
    • Hiromichi Yasuda
    • Hiromichi Yasuda
    • F02D45/00
    • F02D45/00F02D35/023F02D41/222F02D2200/1004Y02T10/40
    • An object of this invention is to accurately detect a sensitivity abnormality of an in-cylinder pressure sensor over a wide operating range without using other sensor outputs or the like. Based on only the output of an in-cylinder pressure sensor 44, an ECU 50 acquires a first parameter that is affected by an output sensitivity of the sensor, and a second parameter that is not affected by the output sensitivity. Specifically, the ECU 50 acquires a heat release quantity PVκ as the first parameter, and acquires an indicated torque ratio (A2/A1) as a second parameter. The ECU 50 also calculates a determination coefficient α that is a ratio between the first and second parameters, and determines that the output sensitivity of the in-cylinder pressure sensor 44 is abnormal when the determination coefficient α deviates from an allowable range. Thus, even without utilizing another sensor output or the like in an auxiliary manner or previously preparing a large amount of data or the like, a sensitivity abnormality of the in-cylinder pressure sensor 44 can be easily detected over a wide operating range.
    • 本发明的目的是在不使用其他传感器输出等的情况下,在宽的工作范围内精确地检测缸内压力传感器的灵敏度异常。 仅基于缸内压力传感器44的输出,ECU50获取受传感器的输出灵敏​​度影响的第一参数和不受输出灵敏度影响的第二参数。 具体而言,ECU50获取作为第一参数的散热量PVkappa,并且获取指定的扭矩比(A2 / A1)作为第二参数。 ECU50还计算作为第一和第二参数之间的比率的确定系数α,并且当确定系数α偏离允许范围时,确定缸内压力传感器44的输出灵敏​​度异常。 因此,即使没有以辅助方式利用另一传感器输出等或者预先准备大量数据等,也能够在宽的工作范围内容易地检测缸内压力传感器44的灵敏度异常。
    • 5. 发明授权
    • Controller for and method of controlling internal combustion engine
    • 内燃机控制器及其控制方法
    • US08862366B2
    • 2014-10-14
    • US13255647
    • 2010-03-09
    • Hiromichi YasudaYusuke Suzuki
    • Hiromichi YasudaYusuke Suzuki
    • F02D28/00F02D35/02F02D41/22
    • F02D35/02F02D35/023F02D35/024F02D35/028F02D41/222F02D2041/281Y02T10/40
    • Heat generation amount PVκ(θ) is calculated with the use of cylinder pressure P(θ), detected by a cylinder pressure sensor, cylinder volume V(θ), and specific heat ratio κ (steps 100 to 102). A crank angle θfix, at which the value of PVκ(θ) peaks, is determined as a start crank angle, at which an adiabatic process after combustion starts (step 104). A correction coefficient Kfix is calculated based on the variation of the value of PVκ(θ) after θfix (step 106). An actual heat generation amount PVκfix(θ) is calculated with the use of the correction coefficient Kfix (step 110). A cooling loss coefficient Kcool that determines a correlation between the cooling loss and crank angles may be calculated based on a water temperature and an engine speed and the actual heat generation amount PVκfix(θ) may be made to reflect the cooling loss coefficient Kcool.
    • 使用气缸压力传感器检测的气缸压力P(& tt)计算发热量PV&kgr((t)),气缸体积V(& t)和比热比kgr; (步骤100〜102)。 确定PV&kgr((t))峰值的曲柄角度和角度;确定燃烧开始之后的绝热过程的起始曲柄角(步骤104)。 修正系数Kfix是根据经过修正后的PV&kgr;(&thetas;)的值的变化计算的(步骤106)。 使用校正系数Kfix计算实际发热量PV&kgr; fix(&thetas)(步骤110)。 可以基于水温和发动机转速来计算确定冷却损失和曲柄角之间的相关性的冷却损失系数Kcool,并且可以使实际发热量PV&kgr;固定(& t)来反映冷却损失系数 Kcool。
    • 10. 发明授权
    • Stress measurement device and stress measurement method
    • 应力测量装置和应力测量方法
    • US07646190B2
    • 2010-01-12
    • US11727152
    • 2007-03-23
    • Kentaro MizunoShoji HashimotoHidenori MoriyaHiromichi Yasuda
    • Kentaro MizunoShoji HashimotoHidenori MoriyaHiromichi Yasuda
    • G01N19/00
    • G01L1/2281G01L9/065
    • A stress measurement device includes a current supply portion; a series circuit which is connected to the current supply portion and has a piezoresistive element that forms a single gauge resistance and a compensating diode that is connected in series to the piezoresistive element; and a voltage measuring portion that measures voltage between both ends of the series circuit. The single gauge resistance has a piezoresistive effect in which a resistance value changes according to applied stress, and a positive temperature characteristic in which the resistance value increases depending on an increase in temperature. The compensating diode is provided in a forward direction with respect to the current supply portion and has a negative temperature characteristic in which a voltage between an anode and a cathode of the compensating diode decreases depending on the increase in temperature.
    • 应力测量装置包括电流供应部分; 串联电路,其连接到电流供应部分,并具有形成单规格电阻的压阻元件和与压阻元件串联连接的补偿二极管; 以及测量串联电路的两端之间的电压的电压测量部。 单规格电阻具有压阻效应,其中电阻值根据施加的应力而变化,并且电阻值随着温度升高而增加的正温度特性。 补偿二极管相对于电流供给部分在正向方向上设置,并且具有负温度特性,其中补偿二极管的阳极和阴极之间的电压根据温度的升高而降低。