公开(公告)号：US5099817A

公开(公告)日：1992-03-31

申请号：US622237

申请日：1990-12-06

申请人： Shinpei Nakaniwa

发明人： Shinpei Nakaniwa

IPC分类号： F02D45/00 ,  F02D41/14

CPC分类号： F02D41/2477 ,  F02D41/2454

摘要： Disclosed are a process and apparatus for learning and controlling the air/fuel ratio in an internal combustion engine, in which a feedback correction value for correcting a basic fuel supply quantity to bring the air/fuel ratio of an air/fuel mixture sucked in the engine close to the target air/fuel ratio is set and a learning correction value for each of driving regions is learned so as to reduce the deviation of the feedback correction value from the target convergent value, and in this control of learning and correcting the air/fuel ratio, the target convergent value is variably set based on engine-driving conditions and the like so that the basic air/fuel ratio obtained without feedback correction can be optionally changed.

公开(公告)号：US4957083A

公开(公告)日：1990-09-18

申请号：US253532

申请日：1988-10-05

申请人： Shinpei Nakaniwa ,  Naoki Tomisawa

发明人： Shinpei Nakaniwa ,  Naoki Tomisawa

IPC分类号： F02D41/04 ,  F02D31/00 ,  F02D41/00 ,  F02D41/16

CPC分类号： F02D31/002 ,  F02D31/005 ,  F02D41/16

摘要： A fuel supply control system introducing the feature of learning in assuming or projecting an intake air flow rate while an engine driving condition is maintained in a sonic flow range, in which intake air path area is maintained substantially constant and intake air flow rate is varied linearly according to variation of an engine speed. The system also detects the engine driving condition in the sonic flow range and the engine speed maintained substantially constant to derive a basic fuel supply amount on the basis of boost pressure. The assumed intake air flow rate is derived on the basis of the basic fuel supply amount and the engine speed. The system derives the basic fuel supply amount on the basis of the assumed intake air flow rate and the engine speed when the engine speed varies within the sonic flow range.

摘要翻译： 一种燃料供给控制系统，其特征在于，在将发动机驱动条件保持在声音流动范围内，进气通路面积保持基本恒定，进气流量线性变化的情况下，引入学习的特征， 根据发动机转速的变化。 该系统还在声音流量范围内检测发动机驱动条件，并且发动机转速保持基本恒定，以基于增压压力导出基本燃料供给量。 假设的进气流量是基于燃料供应量和发动机转速而得出的。 当发动机转速在声波流量范围内变化时，该系统基于假设的进气流量和发动机转速得出基本燃料供给量。

公开(公告)号：US4889100A

公开(公告)日：1989-12-26

申请号：US135364

申请日：1987-12-21

申请人： Shinpei Nakaniwa ,  Seiichi Otani ,  Toru Hamada ,  Masanobu Osaki ,  Yukio Hoshino ,  Naoki Tomisawa

发明人： Shinpei Nakaniwa ,  Seiichi Otani ,  Toru Hamada ,  Masanobu Osaki ,  Yukio Hoshino ,  Naoki Tomisawa

IPC分类号： F02D41/10 ,  F02D41/34

CPC分类号： F02D41/105 ,  F02D41/345 ,  Y02T10/44

摘要： A fuel injection control system is directed for a sequential injection type fuel injection internal combustion engine for injecting fuel for each engine cylinder at different timing. Acceleration enrichment asynchroneous fuel injection is initiated in response to an acceleration demand. Acceleration enrichment is further performed for subsequent given injection cycles for compensation of smaller engine load indicative sensor signal than actual engine load due to error in an air flow meter.

摘要翻译： 燃料喷射控制系统针对用于在不同时刻为每个发动机气缸喷射燃料的顺序喷射型燃料喷射内燃机。 响应于加速需求启动加速浓缩异步燃料喷射。 对于随后给定的喷射周期，进一步执行加速度浓缩，以补偿由于空气流量计中的误差而导致的比发动机负载更小的发动机负荷指示传感器信号。

公开(公告)号：US5261078A

公开(公告)日：1993-11-09

申请号：US560774

申请日：1990-07-31

申请人： Shinpei Nakaniwa ,  Hirohisa Nashima

发明人： Shinpei Nakaniwa ,  Hirohisa Nashima

IPC分类号： G05B15/02 ,  G06F11/36 ,  G06F15/16

CPC分类号： G06F11/3664

摘要： A development computer or first computer provided with a program development-supporting tool for checking an operation of a new control program written by a high-level language is disposed independently from a computer to be developed or second computer. Control based on a new control program written in a high-level language for the computer to be developed or second computer is executed by outputting the result of processing of the new control program by the development computer into the computer to be developed or second computer.

公开(公告)号：US5227975A

公开(公告)日：1993-07-13

申请号：US599223

申请日：1990-10-18

申请人： Shinpei Nakaniwa

发明人： Shinpei Nakaniwa

IPC分类号： F02B75/02 ,  F02D41/14

CPC分类号： F02D41/1483 ,  F02D41/1474 ,  F02D41/1495 ,  F02B2075/027 ,  F02D2041/1409 ,  F02D41/1404 ,  F02D41/1456

摘要： An air/fuel ratio feedback control system for an internal combustion engine sets an air/fuel ratio feedback correction coefficient on the basis of an air/fuel ratio for an air/fuel mixture introduced into a combustion chamber of the engine, to cause the air/fuel ratio to approach a set point thereof. The correction coefficient consists of a rich control proportional component P.sub.R, a lean control proportional component P.sub.L and an integral component I. When the air/fuel ratio set by the feedback control system deviates from an initial set point (the stoichiometric value) due to deterioration of an oxygen sensor for detecting the air/fuel ratio, the feedback control system compensates for the deviation to cause the air/fuel ratio to approach the initial set point, by varying a ratio of the rich control proportional component P.sub.R to the lean control proportional component P.sub.L in accordance with magnitudes of rich and lean detection levels, or by correcting a balance between the rich and lean control proportional components P.sub.R and P.sub.L on the basis of a relationship between signal level varying speeds of the proportional components P.sub.R and P.sub.L, a relationship between rich and lean control times, a relationship between rich and lean detection levels or the like.

公开(公告)号：US5126943A

公开(公告)日：1992-06-30

申请号：US540008

申请日：1990-06-19

申请人： Shinpei Nakaniwa

发明人： Shinpei Nakaniwa

IPC分类号： F02D41/00 ,  F02D41/14 ,  F02D41/22 ,  F02D41/34 ,  F02D41/36

CPC分类号： F02D41/008 ,  F02D41/22 ,  F02D41/2445 ,  F02D41/2454 ,  F02D41/248 ,  F02D41/0085 ,  F02D41/1456

摘要： In a fuel supply control system of an internal combustion engine having a function of feedback-controlling the air-fuel ratio, dispersions of the fuel supply characteristics in respective cylinders are corrected by changes of the air-fuel ratio by the correction of the fuel supply quantity. Factors causing the deviations of the air-fuel ratio are independently compensated by learning the correction value for correcting the fuel supply quantity only at a certain ratio and the correction value for correcting the fuel supply quantity only by a certain quantity so that these correction values are commonly fit for at least two different driving conditions.

摘要翻译： 在具有反馈控制空燃比的功能的内燃机的燃料供给控制系统中，通过燃料供给的校正来校正各气缸中的燃料供给特性的分散 数量。 通过仅以一定比例学习用于校正燃料供给量的校正值和仅校正燃料供给量的一定量的校正值来独立地补偿导致空燃比偏差的因素，使得这些校正值为 通常适合至少两种不同的驾驶条件。

公开(公告)号：US4951635A

公开(公告)日：1990-08-28

申请号：US217861

申请日：1988-07-12

申请人： Shinpei Nakaniwa ,  Akihiko Araki ,  Yukio Hoshino

发明人： Shinpei Nakaniwa ,  Akihiko Araki ,  Yukio Hoshino

IPC分类号： F02D41/00 ,  F02D41/04 ,  F02D41/10

CPC分类号： F02D41/045 ,  F02D41/10

摘要： A fuel injection control system derives a correction coefficient for compensating overshooting component in measurement of an engine load indicative parameter, such as an intake air flow rate. The correction coefficient may be variable in such a manner that it increases according to increasing of the engine load. The correction coefficient may be used for correcting either the measured engine load parameter or the fuel injection amount derived taking the measured engine load.

摘要翻译： 燃料喷射控制系统导出用于补偿发动机负载指示参数（例如进气流量）的测量中的过冲分量的校正系数。 校正系数可以根据发动机负载的增加而增加。 校正系数可以用于校正所测量的发动机负载参数或者根据测量的发动机负载导出的燃料喷射量。

公开(公告)号：US5050084A

公开(公告)日：1991-09-17

申请号：US473032

申请日：1990-01-31

申请人： Shinpei Nakaniwa

发明人： Shinpei Nakaniwa

IPC分类号： F02D41/00 ,  F02D41/04 ,  F02D41/10 ,  F02D41/12 ,  F02D41/34 ,  F02D41/36

CPC分类号： F02D41/008 ,  F02D41/045 ,  F02D41/107 ,  F02D41/126

摘要： In the control of the sequential fuel injection in an internal combustion engine, where the engine load is set based on the opening of the throttle valve and the engine revolution number and the quantity of correction of the fuel supply quantity is determined based on the ratio of the change of this engine load and the time up to a predetermined time during the intake stroke, this time is computed for each cylinder and the correction quantity is set individually for the respective cylinders.

摘要翻译： 在根据节流阀的开度设定发动机负荷和发动机转速的内燃机的顺序燃料喷射的控制中，根据燃料供给量的校正量来确定燃料供给量的修正量 该引擎负载的变化和在进气冲程期间达到预定时间的时间，对于每个气缸计算此次，并且针对各个气缸分别设定校正量。

公开(公告)号：US5048490A

公开(公告)日：1991-09-17

申请号：US537630

申请日：1990-06-14

申请人： Shinpei Nakaniwa

发明人： Shinpei Nakaniwa

IPC分类号： F02D41/14

CPC分类号： F02D41/1495

摘要： In a fuel supply control apparatus constructed so that a fuel supply quantity is feedback-controlled to bring a detected value of an air-fuel ratio of an air-fuel mixture sucked in an engine to a target air-fuel ratio, a disorder of air-fuel ratio-detecting means is diagnosed based on a change of the balance of the response characteristic of the air-fuel ratio-detecting means in both the change directions of the air-fuel ratio, a change of an output value of the air-fuel ratio-detecting means or a change of the frequency of the feedback control.

摘要翻译： 在燃料供给控制装置中，构成为使燃料供给量进行反馈控制，将吸入发动机的空气燃料混合物的空燃比的检测值设定为目标空燃比，空气无序 燃料比检测装置基于空燃比改变方向上的空燃比检测装置的响应特性的平衡的变化进行诊断，空燃比检测装置的输出值的变化， 燃料比检测装置或反馈控制的频率的变化。

公开(公告)号：US5031450A

公开(公告)日：1991-07-16

申请号：US473036

申请日：1990-01-31

申请人： Shinpei Nakaniwa ,  Junichi Furuya ,  Masuo Kashiwabara

发明人： Shinpei Nakaniwa ,  Junichi Furuya ,  Masuo Kashiwabara

IPC分类号： F02D41/18 ,  F02D41/04 ,  G01L23/24

CPC分类号： F02D41/045 ,  G01L23/24

摘要： A method for detecting an intake pressure in an internal combustion engine which comprises detecting the intake pressure in the engine and at least one engine driving condition, variably setting a sampling period of the intake pressure to a sampling period, according to the engine driving condition, which is substantially different from a pulsation period of the intake pressure, sampling processing the intake pressure according to the sampling period set to set the value obtained by the sampling processing as a final detected value of the intake pressure, whereby the reliable sampling of the intake pressure is performed even if the intake pressure is pulsated.

摘要翻译： 一种用于检测内燃机中的进气压力的方法，包括检测发动机中的进气压力和至少一个发动机驱动条件，根据发动机驱动条件将进气压力的采样周期可变地设定到采样周期， 其与进气压力的脉动周期基本上不同，根据设定的采样周期对进气压力进行采样处理，以将通过采样处理获得的值设置为进气压力的最终检测值，从而可靠地取样进气口 即使进气压力被脉动也执行压力。