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    Fuel injection control system for internal combustion engine
    1.
    发明授权
    Fuel injection control system for internal combustion engine 失效
    内燃机燃油喷射控制系统

    公开(公告)号：US5188082A

    公开(公告)日：1993-02-23

    申请号：US846665

    申请日：1992-03-05

    申请人： Hiroshi Udo ,  Hatsuo Nagaishi ,  Tadaoki Takasaki ,  Kou Ido

    发明人： Hiroshi Udo ,  Hatsuo Nagaishi ,  Tadaoki Takasaki ,  Kou Ido

    IPC分类号： F02D41/06 ,  F02D41/18

    CPC分类号： F02D41/06 ,  F02D41/187

    摘要： An electronically controlled fuel injection control system for an automotive internal combustion engine equipped with a hot wire mass air flow sensor to detect an intake air flow amount. The fuel injection control system is comprised of a microcomputer adapted to control the amount of fuel to be injected from a fuel injector mainly in accordance with an engine speed and the intake air flow amount. In the control by the microcomputer, a compensation for time lag is applied onto an intermediate variable which is calculated from the intake air flow amount and used for calculating the fuel injection amount. During an engine starting time period from an engine starting to the time immediately after the engine starting, the compensation for time lag is prohibited until the engine speed has reached a predetermined level, thereby preventing engine control from becoming different between a case when the engine starting is made immediately after the instant of an electric power supply and another case when the engine starting is made upon waiting a little while after the engine starting.

    摘要翻译： 一种用于汽车内燃机的电控燃料喷射控制系统，其配备有热线质量空气流量传感器以检测进气流量。 燃料喷射控制系统包括微型计算机，其适于主要根据发动机转速和进气流量来控制从燃料喷射器喷射的燃料量。 在微型计算机的控制中，对由从进气流量计算并用于计算燃料喷射量的中间变量应用时滞补偿。 在从发动机起动到发动机起动之后的发动机起动时间段期间，禁止对发动机转速达到预定值的时间延迟，从而防止发动机起动时的发动机控制变得不同 是在电力供应之后马上产生的，而在发动机启动后稍等一会儿发动机启动的情况下也是这样。

    Unthrottled intake air control with partial delay for requested engine response performance
    4.
    发明授权
    Unthrottled intake air control with partial delay for requested engine response performance 有权
    无节制的进气控制，部分延迟要求发动机响应性能

    公开(公告)号：US06513490B2

    公开(公告)日：2003-02-04

    申请号：US09727787

    申请日：2000-12-04

    申请人： Takao Kawasaki ,  Masahiro Arai ,  Hatsuo Nagaishi

    发明人： Takao Kawasaki ,  Masahiro Arai ,  Hatsuo Nagaishi

    IPC分类号： F02D4100

    CPC分类号： F02D13/0234 ,  F01L9/04 ,  F01L2201/00 ,  F02D13/0203 ,  F02D13/0253 ,  F02D41/0002 ,  F02D41/083 ,  F02D43/00 ,  F02D45/00 ,  F02D2041/001 ,  F02D2041/002 ,  Y02T10/18 ,  Y02T10/42

    摘要： A system and method for unthrottled intake air control for an internal combustion engine. The engine has at least one combustion chamber provided with electromagnetic intake means. The opening and closing times of the intake means are adjustable entirely independently from the crankshaft position to control intake air supplied to the combustion chamber. A control unit is used to implement instructions for determining a first portion of requested intake airflow, which first portion requests a first engine response performance, and instructions for determining a second portion of requested intake airflow, which second portion requests a second engine response performance. The control unit implements instructions for processing the first and second airflow portions to make contributions to the first and second engine response performances, respectively, instructions for determining an intake means activation command, and instructions for providing the intake means activation command to the intake means to provide an engine response performance combining the first engine response performance with the second engine response performance.

    摘要翻译： 一种用于内燃机的无节流进气调节的系统和方法。 发动机具有设置有电磁进气装置的至少一个燃烧室。 进气装置的打开和关闭时间可以完全独立于曲轴位置进行调节，以控制供给燃烧室的进气。 控制单元用于实现用于确定所请求的进气量的第一部分的指令，该第一部分请求第一发动机响应性能，以及用于确定所请求的进气流的第二部分的指令，该第二部分请求第二发动机响应性能。 控制单元执行用于处理第一和第二气流部分以分别对第一和第二发动机响应性能做出贡献的指令，分别用于确定进气装置启动命令的指令和用于将进气装置启动命令提供给进气装置的指令 提供将第一发动机响应性能与第二发动机响应性能相结合的发动机响应性能。

    Apparatus and method for controlling intake air quantity for internal combustion engine
    5.
    发明授权
    Apparatus and method for controlling intake air quantity for internal combustion engine 有权
    用于控制内燃机进气量的装置和方法

    公开(公告)号：US06397814B1

    公开(公告)日：2002-06-04

    申请号：US09299098

    申请日：1999-04-26

    申请人： Hatsuo Nagaishi ,  Keisuke Fujiwara

    发明人： Hatsuo Nagaishi ,  Keisuke Fujiwara

    IPC分类号： F02D1110

    CPC分类号： F02D13/0234 ,  F01L25/08 ,  F02D11/105 ,  F02D13/0207 ,  F02D13/0253 ,  F02D41/0002 ,  F02D2041/001 ,  F02D2041/002 ,  Y02T10/18 ,  Y02T10/42

    摘要： In a control apparatus and method for controlling an intake air quantity for an internal combustion engine, a throttle position of a throttle valve installed in an intake system of the engine is controlled in such a manner that an intake pressure around the throttle valve (pressure difference between upstream and downstream sides of the throttle valve or a ratio of a pressure between the upstream and downstream sides of the throttle valve) is maintained constant at an approximately predetermined negative pressure under a predetermined (low) engine load condition and a valve closure timing of at least one intake valve installed to open and close each corresponding combustion chamber of the engine is simultaneously controlled to regulate an intake air quantity supplied to the engine under the predetermined (low) engine load condition.

    摘要翻译： 在用于控制内燃机的进气量的控制装置和方法中，安装在发动机的进气系统中的节流阀的节气门位置被控制为使得节气门周围的进气压力（压力差 在节气门的上游侧和下游侧之间或节流阀的上游侧和下游侧之间的压力比）在预定的（低）发动机负载条件下保持恒定在大致预定的负压，并且阀闭合正时 同时控制安装以打开和关闭发动机的每个对应的燃烧室的至少一个进气门，以调节在预定（低）发动机负载条件下供应到发动机的进气量。

    Air/fuel ratio control apparatus
    6.
    发明授权
    Air/fuel ratio control apparatus 失效
    空燃比控制装置

    公开(公告)号：US5690086A

    公开(公告)日：1997-11-25

    申请号：US716844

    申请日：1996-09-10

    申请人： Akihiro Kawano ,  Hatsuo Nagaishi ,  Yoshiaki Yoshioka

    发明人： Akihiro Kawano ,  Hatsuo Nagaishi ,  Yoshiaki Yoshioka

    IPC分类号： F02D41/00 ,  F02D41/14 ,  F02M25/08

    CPC分类号： F02D41/1483 ,  F02D41/0045 ,  F02D41/0042 ,  F02M25/08

    摘要： An apparatus for use with an internal combustion engine having a fuel vapor trap from which fuel vapor is purged into the engine through a purge passage having a purge control valve provided therein. The purge control valve is controlled to permit fuel vapor purge through the purge passage based on the existing engine operating conditions. An air/fuel ratio feedback control correction factor is calculated to correct the air/fuel ratio within a predetermined range based on the air/fuel ratio of the mixture supplied to the engine. A gain value is calculated based on a deviation between the air/fuel ratio feedback correction factor calculated with the fuel vapor purge and the air/fuel ratio feedback correction factor calculated without the fuel vapor purge and a purge rate of the fuel vapor flow rate to the intake air flow rate. The calculated gain values are stored in a memory in respective memory locations addressable by different fuel vapor amounts. The calculated gain value is stored in the memory in a memory location corresponding to the sensed fuel vapor amount to update a gain value stored previously in the memory location. A gain value is read from the memory location corresponding to the fuel vapor amount. The amount of fuel supplied to the engine is controlled according to a target value calculated based on the read gain value and the engine operating conditions.

    摘要翻译： 一种与具有燃料蒸气阱的内燃机一起使用的装置，燃料蒸气通过具有设置在其中的清洗控制阀的吹扫通道从燃料蒸气排出到发动机中。 根据现有的发动机工作条件，控制清洗控制阀以允许通过吹扫通道的燃料蒸汽吹扫。 计算空气/燃料比反馈控制校正系数，以基于供给到发动机的混合物的空燃比来校正在预定范围内的空燃比。 基于由燃料蒸气吹扫计算出的空燃比反馈校正因子与没有燃料蒸气吹扫计算出的空燃比反馈校正因子和燃料蒸汽流量的吹扫率之间的偏差计算增益值 进气流量。 所计算的增益值被存储在可由不同燃料蒸汽量寻址的相应存储器位置的存储器中。 将计算出的增益值存储在与检测到的燃料蒸汽量对应的存储位置的存储器中，以更新先前存储在存储器位置中的增益值。 从对应于燃料蒸气量的存储位置读取增益值。 根据基于读取增益值和发动机工作条件计算的目标值来控制供给发动机的燃料量。

    Signal processor
    7.
    发明授权
    Signal processor 失效
    信号处理器

    公开(公告)号：US5529043A

    公开(公告)日：1996-06-25

    申请号：US275359

    申请日：1994-07-15

    申请人： Hatsuo Nagaishi ,  Kenji Ohta ,  Hiroyuki Itoyama

    发明人： Hatsuo Nagaishi ,  Kenji Ohta ,  Hiroyuki Itoyama

    IPC分类号： F02D45/00 ,  F02D9/10 ,  F02D31/00 ,  F02D41/10 ,  F02D41/18 ,  F02M51/00

    CPC分类号： F02D41/10 ,  F02D31/005 ,  F02D41/187 ,  F02D2011/102 ,  F02D9/1055

    摘要： This invention relates to a signal processor for processing a signal and outputting a processed value. The processor comprises a mechanism for determining whether or not the signal exceeds a preset value, a mechanism for outputting the signal as the processed value when the signal does not exceed the preset value, and a mechanism for outputting the preset value as the processed value when the signal exceeds the preset value. This invention further provides a mechanism for computing a difference between the signal and the preset value when the signal exceeds the preset value, a memory for storing this difference as a postponed correction amount, and a mechanism for adding the postponed correction amount to said signal when the signal no longer exceeds the preset value. In this way, by compensating at a later time for errors arising from modifications made when the signal exceeded said preset value, the precision of operations and controls based on the processed value is improved. Further, in control systems using the integral of said signal, the precision of integral values is also improved. This invention therefore provides effective correction of signal processing errors when applied to the output of an air flow meter having a heating element wound on a bobbin, or to the control of a flowrate control valve installed in an intake air passage of a lean burn engine.

    摘要翻译： 本发明涉及用于处理信号并输出​​处理值的信号处理器。 处理器包括用于确定信号是否超过预设值的机构，当信号不超过预设值时输出信号作为处理值的机构，以及用于输出预设值作为处理值的机构， 信号超过预设值。 本发明还提供了一种用于当信号超过预设值时计算信号与预设值之间的差异的机构，用于将该差异存储为延迟校正量的存储器，以及用于将延迟校正量添加到所述信号的机制， 信号不再超过预设值。 以这种方式，通过在信号超过所述预设值时进行的修改产生的错误在稍后的时间内进行补偿，提高了基于处理值的操作和控制的精度。 此外，在使用所述信号的积分的控制系统中，积分值的精度也得到改善。 因此，本发明提供了当应用于具有缠绕在筒管上的加热元件的空气流量计的输出或安装在稀薄燃烧发动机的进气通道中的流量控制阀的控制时信号处理误差的有效校正。

    Engine fuel injection controller
    8.
    发明授权
    Engine fuel injection controller 失效
    发动机燃油喷射控制器

    公开(公告)号：US5425349A

    公开(公告)日：1995-06-20

    申请号：US117929

    申请日：1993-09-08

    申请人： Hatsuo Nagaishi ,  Kenji Ohta ,  Hiroshi Iwano

    发明人： Hatsuo Nagaishi ,  Kenji Ohta ,  Hiroshi Iwano

    IPC分类号： F02D41/14 ,  F02D41/00 ,  F02D45/00 ,  F02M25/08

    CPC分类号： F02D41/0045 ,  F02D41/0042

    摘要： Fuel injection controller is provided for an engine having a purge passage for purging fuel vapor from the fuel tank into the intake passage, a purge valve which opens and closes the purge passage and a mechanism for feedback correcting a fuel injection amount based on a detected air-fuel ratio, The controller learns a feedback correction amount when the purge valve opens or closes, stores and updates a learning value according to the variation of the correction amount. When the variation of the learning value has converged to within certain region, the controller clamps the learning value, and corrects the fuel injection amount during purge based on this clamped value. Air-fuel ratio errors due to purging can therefore be rapidly reduced.

    摘要翻译： 为具有净化通道的发动机提供燃料喷射控制器，该净化通道用于将燃料蒸气从燃料箱吹入进气通道，打开和关闭净化通道的净化阀以及基于检测到的空气反馈校正燃料喷射量的机构 - 燃料比率，当清除阀打开或关闭时，控制器学习反馈校正量，根据校正量的变化存储和更新学习值。 当学习值的变化已经收敛到特定区域内时，控制器将钳位学习值，并根据该钳位值来校正吹扫过程中的燃油喷射量。 因此，能够迅速地减少由于清洗引起的空燃比误差。

    Air-fuel ratio controller for engine
    9.
    发明授权
    Air-fuel ratio controller for engine 失效
    发动机空燃比控制器

    公开(公告)号：US5271374A

    公开(公告)日：1993-12-21

    申请号：US913689

    申请日：1992-07-15

    申请人： Hatsuo Nagaishi ,  Hiroshi Iwano

    发明人： Hatsuo Nagaishi ,  Hiroshi Iwano

    IPC分类号： F02D41/14

    CPC分类号： F02D41/2441 ,  F02D41/2454

    摘要： The first mixing ratio error in a transient state is sampled as a pre-transient error, the last mixing ratio error in the transient state is sampled as a post-transient error, and the peak value of the mixing ratio errors in the transient state is also sampled. The difference between either this pre-transient mixing ratio error or post-transient mixing ratio error depending on whichever is the nearer to a peak value, and the peak value of said mixing ratio errors, is computed. Injection fuel correction amounts in transient running states are learned and the learned values are stored in a memory so as to eliminate this difference. By correcting the injection fuel amounts based on these learned values in transient running states, the effect of steady state errors on the transient learning precision is eliminated and instantaneous lean peaks in the air-fuel ratio are smoothed out.

    摘要翻译： 将瞬态中的第一混合比误差作为预瞬态误差进行采样，将瞬态中的最后一个混合比误差作为瞬时误差进行采样，并将瞬态中混合比误差的峰值 也采样。 计算这种预瞬态混合比误差或取决于更接近峰值的瞬时混合比误差之间的差异以及所述混合比误差的峰值之间的差异。 学习瞬时运行状态下的喷射燃料校正量，并将学习值存储在存储器中，以消除该差异。 通过基于瞬态运行状态下的这些学习值来校正喷射燃料量，消除了稳态误差对瞬态学习精度的影响，并且平滑了空燃比中的瞬时精益峰值。