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    • 1. 发明授权
    • Apparatus for controlling ignition timing in internal combustion engine
    • 用于控制内燃机发动机点火时间的装置
    • US5070842A
    • 1991-12-10
    • US552811
    • 1990-07-16
    • Noriyuki InoueSatoru OhkuboToshio IwataAkira Demizu
    • Noriyuki InoueSatoru OhkuboToshio IwataAkira Demizu
    • F02P5/15F02P17/00
    • F02P5/151F02P17/00Y02T10/46
    • An apparatus for controlling ignition timing in an internal combustion engine wherein the ignition timing is controlled such that a crank angle at which an increased rate of pressure in a cylinder is maximized coincides with a target value, e.g., an MBT point or the like. The apparatus detects an occurrence of incorrect ignition in response to a signal indicative of pressure in the cylinder and inhibits feedback control from being carried out for the ignition timing when an occurrence of incorrect ignition is detected. The crank angle, at which an increased rate of pressure in the cylinder is maximized, is calculated in response to a signal indicative of pressure in the cylinder, a reference pulse transmitted from a crank angle sensor and a pulse transmitted per 1.degree. of a crank angle of the crankshaft. The target value is set to a value by which a maximum torque is obtainable within a range where no knocking occurs.
    • 一种用于控制内燃机中的点火正时的装置,其中控制点火正时,使得气缸中的增加的压力最大化的曲柄角与目标值一致。 例如MBT点等。 该装置响应于指示气缸中的压力的​​信号来检测到不正确的点火发生,并且当检测到发生不正确的点火时,禁止对点火正时进行反馈控制。 响应于指示气缸中的压力的​​信号,从曲柄角传感器传递的参考脉冲和每1°曲柄传递的脉冲来计算气缸中的压力增加率最大化的等级角 曲轴角度。 将目标值设定为在不发生爆震的范围内可获得最大扭矩的值。
    • 2. 发明授权
    • Ignition timing controlling apparatus for internal combustion engine
    • 内燃机点火正时控制装置
    • US5063902A
    • 1991-11-12
    • US493670
    • 1990-03-15
    • Noriyuki InoueSatoru OhkuboToshio IwataAkira Demizu
    • Noriyuki InoueSatoru OhkuboToshio IwataAkira Demizu
    • F02P5/145F02P5/15
    • F02P5/1502F02P5/1455Y02T10/46
    • An ignition timing controlling apparatus which calculates a crank angle when the pressure building-up rate in a cylinder of an internal combustion engine is the maximum, and feedback-controls an ignition timing so as to make the deviation value between the crank angle and the target value thereof be zero. The apparatus does not feedback-control in the predetermined running region where the crank angle at which pressure building-up rate in the cylinder at the time of light loading, idling and so on is the maximum is unstabilized, and ignites a plug at a basic ignition timing determined by running state of the engine as well as makes the gain of feedback-control differ from each other according to whether the deviation is in the advanced angle side or delayed angle side, and is capable of controlling ignition timing so that the maximum torque can be obtained regardless of elapsing change and dispersion in manufacturing.
    • 一种点火正时控制装置,其在内燃机的气缸中的压力增加率最大时计算曲柄角度,并且对点火正时进行反馈控制,以使曲柄角与目标之间的偏差值 其值为零。 该装置在轻载,空转等时的气缸内的压力建立速度最大的曲柄角度不稳定的预定行驶区域中不进行反馈控制,并且以基准 根据发动机的运行状态确定的点火正时以及反馈控制的增益根据偏差是否在提前角侧或延迟角度侧彼此不同,并且能够控制点火正时,使得最大值 可以获得扭矩,而不管制造中的经过变化和分散。
    • 3. 发明授权
    • Pressure detecting apparatus
    • 压力检测装置
    • US4936137A
    • 1990-06-26
    • US461891
    • 1990-01-08
    • Toshio IwataSatoru Ohkubo
    • Toshio IwataSatoru Ohkubo
    • F02D35/02F02D41/24
    • F02D41/28F02D35/023
    • The present invention relates to a pressure detecting apparatus which detects the peak of combustion pressure in a cylinder of an internal combustion engine and the timing of that peak. The apparatus according to the present invention can be constructed in two alternative ways. That is, in one way, once stored data of combustion pressure in the cylinder is read out in reverse order, thus the difference between the read-out data and the data of combustion pressure in the cylinder is obtained, and the peak of combustion pressure in the cylinder and the timing of the peak are detected in accordance with the difference. In another way, the inflection points of the differentiated result of the data of combustion pressure in the cylinder are detected, and the peak of combustion pressure and the timing of the peak are detected in accordance with the inflection points. Consequently, the peak of combustion pressure in the cylinder and the timing of the peak can be detected easily even in the case where the internal combustion engine is idling and the peak of combustion pressure in the cylinder has comb to be less than the maximum pressure value of the motoring, for example. As a result, it is possible to accurately detect the combustion condition in the cylinder of the internal combustion engine.
    • 本发明涉及一种检测内燃机的气缸中的燃烧压力的峰值和该峰值的定时的压力检测装置。 根据本发明的装置可以以两种可选方式构造。 也就是说,以一种方式,一旦以相反的顺序读出存储在气缸中的燃烧压力的数据,则获得读取数据与气缸中的燃烧压力数据之间的差异,并且燃烧压力的峰值 在气缸中并根据差异来检测峰值的定时。 另一方面,检测气缸内燃烧压力数据差分结果的拐点,根据拐点检测燃烧压力峰值和峰值定时。 因此,即使在内燃机怠速的情况下,也能够容易地检测出气缸中的燃烧压力的峰值和峰值的正时,并且气缸中的燃烧压力的峰值梳至小于最大压力值 的驾驶,例如。 结果,能够精确地检测内燃机的气缸内的燃烧状态。
    • 4. 发明授权
    • Controller for internal combustion engine
    • 内燃机控制器
    • US4944271A
    • 1990-07-31
    • US334505
    • 1989-04-07
    • Toshio IwataSatoru Ohkubo
    • Toshio IwataSatoru Ohkubo
    • F02D45/00F02D35/02F02D41/12F02D41/14
    • F02D35/023F02D41/1497F02D35/024F02D41/123
    • This invention provides a controller for controlling the combustion of an internal combustion engine. The controller comprises pressure sensors for detecting the pressure in a set of cylinders. The detected pressure profile in the cylinders is used to determine the combustion parameters, based on which the drive control parameters are determined. The combustion of the engine is normally controlled with those drive control parameters while the control is performed by means of predetermined parameters in the event of no combustion occurring. In determining the combustion parameters, the controller in accordance with this invention calibrates the pressure profile detected by the pressure sensor to eliminate the modulus and the offset of the pressure sensor from the pressure profile. The modulus and the offset are renewed on a proper basis to make up for the drawback that the modulus and the offset fluctuate in response to changes in temperature.
    • 本发明提供一种用于控制内燃机的燃烧的控制器。 控制器包括用于检测一组气缸中的压力的​​压力传感器。 气缸中检测到的压力分布用于确定燃烧参数,基于此确定驱动控制参数。 发动机的燃烧通常由这些驱动控制参数控制,而在没有发生燃烧的情况下通过预定参数进行控制。 在确定燃烧参数时,根据本发明的控制器校准由压力传感器检测到的压力分布,以消除压力传感器与压力分布的模量和偏移。 模量和偏移在适当的基础上更新以弥补模量和偏移响应于温度变化而波动的缺点。
    • 5. 发明授权
    • Air-fuel ratio control device for an internal combustion engine
    • 用于内燃机的空燃比控制装置
    • US4928653A
    • 1990-05-29
    • US329287
    • 1989-03-27
    • Satoru OhkuboToshio Iwata
    • Satoru OhkuboToshio Iwata
    • F02D35/02F02D41/00F02D41/14
    • F02D35/023F02D41/1498F02D2200/1015
    • An air-to-fuel ratio control device for an internal combustion engine is disclosed, which comprises a pressure sensor for detecting the pressure P within a cylinder of the engine, and means for computing an actual value of the ratio (dP/d.theta.)max/Pmax, wherein (dP/d.theta.)max is the maximum rate of change in pressure P within the cylinder with respect to the crank angle .theta. and Pmax is the maximum pressure in the cylinder during a predetermined interval in a cycle of the cylinder. A target value of the ratio (dP/d.theta.)max/Pmax is obtained by converting the optimum air-to-fuel ratio corresponding to the operating condition of the engine, the conversion being effected by means of a relationship established between the values of the air-to-fuel ratio and those of the ratio (dP/d.theta.)max/Pmax. A control element controls the amount of injected fuel to reduce the deviation of the actual value of the ratio (dP/d.theta.)max/Pmax with respect to the target value thereof.
    • 公开了一种用于内燃机的空燃比控制装置,其包括用于检测发动机气缸内的压力P的压力传感器和用于计算比率(dP /dθ)的实际值的装置, max / Pmax,其中(dP /dθ)max是圆筒内相对于曲柄角θ的压力P的最大变化率,Pmax是在圆筒的循环中的预定间隔期间气缸中的最大压力 。 通过转换对应于发动机的运行状态的最佳空燃比获得比率(dP /dθ)max / Pmax的目标值,该转换通过在 空气 - 燃料比和比率(dP /dθ)max / Pmax。 控制元件控制喷射燃料量以减小比率(dP /dθ)max / Pmax相对于其目标值的实际值的偏差。
    • 9. 发明授权
    • Apparatus for reducing quantization distortion
    • 减少量化失真的装置
    • US5852566A
    • 1998-12-22
    • US712557
    • 1996-09-13
    • Toshio Iwata
    • Toshio Iwata
    • H03H17/02H03M1/06H03M1/08H03M1/66H03M7/36G06F17/10G06F7/38G06F17/15
    • H03M1/661
    • An apparatus for fully reducing quantization distortion of a digital signal, which includes at least one digital low-pass filter, a counter, a selector and a corrector. Each of the digital low-pass filter(s) operates to pick up predetermined low frequency components from an input digital signal while expanding downward its bit length so as to obtain an output digital signal having the expanded bit length. The counter counts the number of consecutive samples having a same quantized level before and after each sample point of the input digital signal. And, in accordance with the count value of this counter, the selector selects and outputs either the input digital signal whose bit length was expanded downward or a digital signal passed through any one of the digital low-pass filters. Further, the corrector operates to make a discontinuous point (contained in the output of the selector) continuous. Thus, the apparatus allows its output signal to smoothly vary without unnecessarily attenuating the high frequency components.
    • 一种用于完全减少数字信号的量化失真的装置,其包括至少一个数字低通滤波器,计数器,选择器和校正器。 每个数字低通滤波器操作以从输入数字信号中提取预定的低频分量,同时向下扩展其位长度,以便获得具有扩展位长度的输出数字信号。 计数器对输入数字信号的每个采样点之前和之后具有相同量化电平的连续样本的数量进行计数。 并且,根据该计数器的计数值,选择器选择并输出其位长度向下扩展的输入数字信号或通过数字低通滤波器中的任一个的数字信号。 此外,校正器操作以使不连续点(包含在选择器的输出中)连续。 因此,该装置允许其输出信号平滑地变化,而不会不必要地衰减高频分量。
    • 10. 发明授权
    • Method for detecting misfiring in an internal combustion engine
    • US5505077A
    • 1996-04-09
    • US413629
    • 1995-03-30
    • Wataru FukuiToshio Iwata
    • Wataru FukuiToshio Iwata
    • F02B3/06G01M15/08G01M15/11G01M15/00
    • G01M15/08G01M15/11F02B3/06
    • Misfiring in an engine cylinder can be detected based on the pressure therein as sensed by a pressure sensor with a high degree of reliability at any time even if the output signal of the pressure sensor contains an offset component superposed on a pressure component representative of the actual cylinder pressure. In one form, the pressure sensor output is differentiated to eliminate the influence of the offset component and then processed to generate a power stroke pressure information signal in the form of the time of a pressure-change peak in the differentiated pressure sensor output or an integrated value of the differentiated output, which is then compared with a threshold so as to determine whether misfiring took place in the cylinder. In another form, the offset component is calculated based on the pressure in the cylinder at two different crank angles during a compression stroke, and it is then removed from the pressure sensor output and compared with a threshold or it may be integrated for a prescribed crank angle range around TDC before comparison with the threshold. In a further form, an expected pressure in the cylinder at a third crank angle during a power stroke is calculated based on the cylinder pressures at first and second crank angles during a compression stroke preceding the power stroke, and then compared with the cylinder pressure as sensed by the pressure sensor at the third crank angle for misfiring determination.