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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
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。
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公开(公告)号：US5474049A
公开(公告)日：1995-12-12
申请号：US119680
申请日：1993-09-13
申请人： Hatsuo Nagaishi , Kenji Ohta , Hiroshi Iwano
发明人： Hatsuo Nagaishi , Kenji Ohta , Hiroshi Iwano
CPC分类号： F02D41/0045 , F02M25/08 , F02D41/0032
摘要： An engine provided with a purge valve introducing fuel vapor from the fuel tank into the intake passage, a purge valve for opening and closing the passage, a device for setting a basic flowrate of the purge valve according to the engine running conditions, and a device for detecting the fuel concentration of the purge gas. Further, a device is provided for correcting the basic flowrate based on the fuel concentration of the purge gas so as to decrease the purge valve flowrate when the fuel concentration is high, and increase the purge valve flowrate when it is low. The purge valve opening is controlled according to this corrected flowrate, and purging can therefore be performed rapidly without adversely affecting the air-fuel ratio.
摘要翻译： 一种发动机，其具有将来自燃料箱的燃料蒸气引入进气通路的清洗阀，用于打开和关闭通道的清洗阀，根据发动机运行条件设定排气阀的基本流量的装置，以及装置 用于检测吹扫气体的燃料浓度。 此外，提供了一种用于基于净化气体的燃料浓度来校正基本流量的装置，以便当燃料浓度高时降低吹扫阀的流量，并且当其低时增加吹扫阀的流量。 根据该校正流量来控制排气阀开度，因此可以快速地进行清洗，而不会对空燃比产生不利影响。
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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。
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公开(公告)号：US5887568A
公开(公告)日：1999-03-30
申请号：US893717
申请日：1997-07-11
CPC分类号： F02P5/1502 , Y02T10/46
摘要： A predetermined firing delay time B.sub.1 is added to a value obtained by dividing a total gas weight Gcyl in a cylinder by an unburnt gas density basic value DENS and a laminar flow flame velocity basic value FLML. The value obtained by this calculation is unit converted and then set as a basic ignition timing for which a minimum ignition advance value or MBT is obtained. In this way, ignition timing control is optimized for various engine running conditions without preparing a plurality of maps.
摘要翻译： 将预定的点火延迟时间B1加到通过将气缸中的总气体重量Gcyl除以未燃气体密度基础值DENS和层流火焰速度基本值FLML而获得的值。 通过该计算获得的值被单位转换，然后设定为获得最小点火提前值或MBT的基本点火正时。 以这种方式，对于各种发动机运行条件，点火正时控制被优化，而不需要准备多个地图。
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公开(公告)号：US6058905A
公开(公告)日：2000-05-09
申请号：US108409
申请日：1998-07-01
申请人： Hatsuo Nagaishi , Takamasa Ueda , Hiroshi Iwano , Yuki Nakajima
发明人： Hatsuo Nagaishi , Takamasa Ueda , Hiroshi Iwano , Yuki Nakajima
CPC分类号： F02D41/307 , F02D33/00 , F02D41/3029 , F02D41/402 , F02D2041/389 , Y02T10/128 , Y02T10/44
摘要： A fuel injection control system for a cylinder direct injection spark-ignition internal combustion engine judges a homogeneous charge combustion condition which requires homogeneous charge combustion and a stratified charge combustion condition which requires stratified charge combustion, in accordance with an engine operating condition. Fuel is supplied on an intake stroke so as to form a rich equivalent ratio in the homogeneous charge combustion, and fuel is supplied on a compression stroke so as to form a lean equivalent ratio in the stratified charge combustion, with the rich equivalent ratio being richer in fuel than the lean equivalent ratio. The system then gradually changes over an equivalent ratio within a range between the rich and lean equivalent ratios when engine operation is changed over between the homogeneous charge combustion condition and the stratified charge combustion condition. The system then injects first and second quantities of fuel into a cylinder of the engine respectively on intake and compression strokes in each cycle of the cylinder at least at a predetermined time during a time period in which the equivalent ratio is gradually changed over.
摘要翻译： 用于气缸直喷式火花点火内燃机的燃料喷射控制系统根据发动机工作条件判断需要均匀充气燃烧的均匀充量燃烧条件和需要分层充气燃烧的分层充气燃烧条件。 在进气冲程中供给燃料以在均匀充气燃烧中形成丰富的当量比，并且在压缩冲程中供应燃料，以便在分层充气燃烧中形成稀薄当量比，富当量比更丰富 在燃料中比稀薄当量比。 当在均质充气燃烧条件和分层充气燃烧条件之间改变发动机运转时，系统在丰富和稀薄当量比之间的范围内逐渐变化超过当量比。 至少在等效比逐渐改变的时间段内，至少在预定的时间，系统分别在气缸的每个循环的进气和压缩冲程中将第一和第二数量的燃料分别注入发动机气缸中。
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公开(公告)号：US5345921A
公开(公告)日：1994-09-13
申请号：US128964
申请日：1993-09-30
申请人： Hiroshi Iwano , Hatsuo Nagaishi
发明人： Hiroshi Iwano , Hatsuo Nagaishi
CPC分类号： F02D41/061 , F02D41/1482 , F02D41/1483
摘要： A fuel supply amount is feedback controlled by a controller according to a feedback correction amount computed based on the output of an oxygen sensor installed in an exhaust pipe. An air-fuel ratio detected by this sensor is used to update a basic injection feedback correction amount which is a step fraction when there is a change-over of the air-fuel ratio, and an integral fraction when there is no change-over of the air-fuel ratio. This controller is further provided with a mechanism for detecting engine start-up, a mechanism for setting an initial value of a warm-up correction amount according to the engine temperature during start-up, a mechanism for computing a warm-up correction amount reduced according to the time elapsed after start-up, and a mechanism for adding this warm-up correction amount to said step fraction. The amplitude of the air-fuel ratio variation during engine warm-up is therefore maintained at or above a certain level, and the exhaust conversion efficiency of the three-way catalyst during the warm-up is improved.
摘要翻译： 燃料供给量由控制器根据基于安装在排气管中的氧传感器的输出计算出的反馈修正量反馈控制。 由该传感器检测到的空燃比用于更新作为空燃比转换时的步进分数的基本喷射反馈修正量，当不存在转换时的积分分数 空燃比。 该控制器还设置有用于检测发动机起动的机构，用于根据启动期间的发动机温度来设定预热校正量的初始值的机构，用于计算预热校正量的机构减少 根据启动后经过的时间，以及用于将该预热校正量添加到所述步骤分数的机构。 因此，发动机预热期间的空燃比变动的幅度保持在一定水平以上，并且提高了暖机期间三元催化剂的排气转化效率。
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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
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。
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公开(公告)号：US5535586A
公开(公告)日：1996-07-16
申请号：US55017
申请日：1993-04-30
申请人： Kenji Ohta , Hiroshi Twano , Hatsuo Nagaishi
发明人： Kenji Ohta , Hiroshi Twano , Hatsuo Nagaishi
CPC分类号： F02D41/0255 , F01N3/2006 , F02P5/1506 , Y02T10/26 , Y02T10/46
摘要： A mechanism for computing the basic ignition period of a spark plug from engine running conditions, a mechanism for judging whether or not the running conditions are within a delay correction region, and a mechanism for computing a basic delay amount if the running conditions are within the delay correction region, are provided. The accelerator opening or throttle opening are detected, and after the delay amount has been corrected according to the detected opening, the basic ignition period is corrected by the basic delay amount. The spark plug thereby ignites the fuel with the corrected ignition period, and the engine catalyst is activated early without impairing engine running performance after engine start-up.
摘要翻译： 一种用于从发动机运行条件计算火花塞的基本点火时间的机构，用于判断运行条件是否在延迟校正区域内的机构，以及如果运行条件在运行条件内的情况下计算基本延迟量的机构 延迟校正区域。 检测到加速器开度或节气门开度，并且在根据检测到的开度校正了延迟量之后，通过基本延迟量来校正基本点火期间。 火花塞因此在校正的点火期间点燃燃料，并且发动机催化剂在发动机起动之后不会损害发动机运转性能而被早期启动。
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公开(公告)号：US5404862A
公开(公告)日：1995-04-11
申请号：US122091
申请日：1993-09-16
申请人： Kenji Ohta , Ichiro Itonaga , Hatsuo Nagaishi
发明人： Kenji Ohta , Ichiro Itonaga , Hatsuo Nagaishi
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 comprises a device for detecting the fuel flowrate in the purge passage, a device for subtracting the fuel flowrate in the purge passage from the basic injection amount so as to correct the set injection amount, and a device for increasing a fuel feedback gain of the air-fuel ratio feedback correction. In this way, even if the air-fuel ratio feedback correction amount decreases due to purge, the air-fuel ratio feedback gain will not decrease and the response of the air-fuel ratio correction can be maintained.
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。 控制器包括用于检测净化通道中的燃料流量的装置，用于从基本喷射量减去净化通道中的燃料流量以校正设定的喷射量的装置，以及用于增加燃料反馈增益的装置 空燃比反馈校正。 以这种方式，即使空气 - 燃料比反馈校正量由于吹扫而降低，空燃比反馈增益也不会降低，能够维持空燃比校正的响应。
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公开(公告)号：US20060075996A1
公开(公告)日：2006-04-13
申请号：US11240641
申请日：2005-10-03
CPC分类号： F02D13/0238 , F01L1/022 , F01L1/344 , F01L13/0026 , F01L2013/0073 , F01L2800/00 , F01L2820/032 , F02D13/0207 , F02D41/0002 , F02D2041/001 , F02D2200/0402 , Y02T10/18 , Y02T10/42
摘要： An internal combustion engine control apparatus basically comprises a reference intake air quantity calculating section, a maximum intake air quantity calculating section and an engine control section. The reference intake air quantity calculating section is configured to calculate a reference intake air quantity corresponding to when an intake air is taken in as a sonic flow. The maximum intake air quantity calculating section is configured to calculate a theoretical maximum intake air quantity. The engine control section is configured to control the engine by using an intake air quantity function between a first value obtained by dividing the reference intake air quantity by the maximum intake air quantity and a second value obtained by dividing an actual intake air quantity corresponding to the valve characteristics of the intake valve by the maximum intake air quantity.
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