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    • 2. 发明授权
    • Simulation method of an electron device
    • US11354476B2
    • 2022-06-07
    • US16682187
    • 2019-11-13
    • Hiroshi Watanabe
    • Nobuyuki SanoHiroshi WatanabeChih-Wei Yao
    • G06F17/10G06F30/367G06F111/08
    • There is a significant precaution when performing random dopant fluctuation by using the drift-diffusion model that is the basis of the conventional device simulation. Because the continuation by a long wavelength approximation was done to derive said drift-diffusion model. That is how to recover the location dependence of discrete impurity ions in the long wavelength approximation. For example, in the case that there is an impurity ion near to the interface to an insulating film, the charge density of an impurity ion, which was made continuous in the conventional method, is unable to catch the charge density change due to polarization at the interface. Because this polarization is dependent of the location of a discrete impurity ion near to the interface.
      A method for simply implementing the effect of polarization to the device simulation is provided by appending an image charge inside the insulating film to linearize the charge of discrete impurity ion which locates near to the interface to satisfy the consistency to the drift-diffusion model while keeping the location dependency of the discrete ion.
    • 8. 发明授权
    • Control device for internal combustion engine
    • 内燃机控制装置
    • US09470169B2
    • 2016-10-18
    • US13979217
    • 2011-01-20
    • Hiroshi WatanabeYasumichi Inoue
    • Hiroshi WatanabeYasumichi Inoue
    • F02D41/30F02D41/12F02D41/04F02D41/10
    • F02D41/30F02D41/047F02D41/107F02D41/12F02D41/123F02D41/126F02D41/307F02D41/3094
    • An object of the present invention is to enhance precision of air-fuel ratio control after return from fuel cut in a control device for an internal combustion engine that has a plurality of fuel injection modes, and performs calculation of a fuel injection amount by a method corresponding to an injection mode in use. For this object, the control device for an internal combustion engine the present invention provides normally determines the injection mode in response to an operation state, but designates a specific injection mode with a higher priority than the injection mode determined in response to the operation state at a time of return from fuel cut. For a predetermined time period after the return from fuel cut, the control device prohibits the injection mode from being changed in response to the operation state, and keeps fuel injection according to the designated specific injection mode.
    • 本发明的目的是在具有多个燃料喷射模式的内燃机的控制装置中从燃料切断返回后提高空燃比控制的精度,并且通过方法进行燃料喷射量的计算 对应于使用中的喷射模式。 为此目的,本发明提供的内燃机控制装置通常响应于操作状态而确定喷射模式,而是指定具有比响应于操作状态所确定的喷射模式更高优先级的特定喷射模式 从燃料切断返回的时间。 在从燃料切断返回后的预定时间段内,控制装置禁止喷射模式响应于操作状态而改变,并且根据指定的特定喷射模式保持喷射燃料。