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公开(公告)号：US5747677A
公开(公告)日：1998-05-05
申请号：US766936
申请日：1996-12-16
申请人： Naoki Tomisawa , Kenichi Mori
发明人： Naoki Tomisawa , Kenichi Mori
CPC分类号： G01L23/22 , F02D35/023 , F02P13/00 , G01L23/10 , F02D2041/281
摘要： An apparatus for detecting pressure in an engine cylinder comprises a cylinder pressure sensor inserted between an ignition plug screwed into an engine cylinder head and a bearing surface on which the ignition plug is mounted. The sensor outputs a detection signal depending upon a change in the sensor load corresponding to a change in the pressure in the cylinder, to detect the pressure in the cylinder based on a detection signal from the cylinder pressure sensor. The detection signal from the cylinder pressure sensor is invalidated for only a predetermined period based on an ignition signal that controls the ignition of the ignition plug so that the S/N ratio in the sensor output will not be deteriorated by the ignition noise.
摘要翻译： 用于检测发动机气缸中的压力的装置包括插入在发动机气缸盖中的火花塞和安装火花塞的支承表面之间的气缸压力传感器。 传感器根据与气缸中的压力变化相对应的传感器负载的变化输出检测信号，以根据来自气缸压力传感器的检测信号检测气缸中的压力。 来自气缸压力传感器的检测信号基于控制火花塞的点火的点火信号仅使预定时间段无效，使得传感器输出中的S / N比不会因点火噪声而劣化。
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2.发明授权
公开(公告)号：US5701868A
公开(公告)日：1997-12-30
申请号：US783291
申请日：1997-01-10
申请人： Naoki Tomisawa
发明人： Naoki Tomisawa
CPC分类号： F02D41/0025 , F02D19/0634 , F02D19/0636 , F02D41/024 , F02D41/0255 , F02P5/1506 , F02D19/0649 , F02D2200/0611 , F02P5/045 , Y02T10/26 , Y02T10/36 , Y02T10/46
摘要： The heavy/light grade of fuel supplied to an internal combustion engine is detected, for example with a sensor or by detecting fluctuations in combustion pressure, and a retard angle correction amount for control of an ignition timing retard angle for activating an exhaust gas purification catalytic converter during a predetermined interval after engine start-up, is set based on the detected properties of the fuel. The time required for activating the exhaust gas purification catalytic converter can thus be shortened by retarding the ignition timing, corresponding to the heavy/light grade of the fuel, to increase the exhaust temperature while maintaining combustion stability.
摘要翻译： 检测供给内燃机的重/轻等级的燃料，例如用传感器或通过检测燃烧压力的波动，以及用于控制用于启动废气净化催化剂的点火正时延迟角的延迟角修正量 在发动机启动之后的预定间隔期间，基于检测到的燃料特性设定转换器。 因此，可以通过延迟对应于燃料的重/轻等级的点火正时来缩短启动废气净化催化转化器所需的时间，从而在保持燃烧稳定性的同时增加排气温度。
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3.发明授权
公开(公告)号：US5679892A
公开(公告)日：1997-10-21
申请号：US692974
申请日：1996-08-07
申请人： Naoki Tomisawa , Hajime Hosoya
发明人： Naoki Tomisawa , Hajime Hosoya
IPC分类号： G01P5/12 , F02D35/00 , F02D41/18 , F02D45/00 , G01F1/68 , G01F1/696 , G01F1/698 , G01F1/699 , G01M15/00
CPC分类号： F02D41/187 , G01F1/698 , G01F1/699
摘要： A pull-down resistor is connected to a power source line between power source connectors and a detector circuit in an apparatus in which a power source is connected via the power source connectors to the detector circuit, which includes a temperature-sensitive resistor and which outputs a voltage signal to a control unit via signal connectors. The pull-down resistor increases current flow to the power source connectors thus to suppress oxide formation thereon. A pull-up resistor or a pull-down resistor is connected to a signal line between the signal connectors and a filter circuit in the control unit, in order to increase an electric current that flows into the signal connector terminals thereby to prevent the formation of an oxide film on the signal connector terminals.
摘要翻译： 下拉电阻器连接到电源连接器和检测器电路之间的电源线，其中电源通过电源连接器连接到检测器电路，该检测器电路包括温度敏感电阻器，并且其输出 通过信号连接器向控制单元施加电压信号。 下拉电阻增加了电流连接器的电流，从而抑制其上的氧化物形成。 上拉电阻器或下拉电阻器连接到信号连接器和控制单元中的滤波器电路之间的信号线，以便增加流入信号连接器端子的电流，从而防止形成 信号连接器端子上的氧化膜。
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4.发明授权
公开(公告)号：US5617833A
公开(公告)日：1997-04-08
申请号：US577461
申请日：1995-12-21
申请人： Naoki Tomisawa , Kenichi Machida
发明人： Naoki Tomisawa , Kenichi Machida
摘要： In apparatus and method for diagnosing an EGR (Exhaust Gas Recirculation) system in an internal combustion engine, a combustion time duration (MT) in one combustion stroke is measured, the combustion time duration including at least an approximately combustion end period, a predictive (reference) combustion time duration (MTA) in one combustion stroke is derived on the basis of engine driving condition and a target EGR rate to be carried out by the EGR system, and the measured combustion time duration (MT) is compared with the predictive (reference) combustion time duration (MTA). Depending on a result of the comparison, the diagnosing apparatus and method determine whether a failure in the EGR system occurs.
摘要翻译： 在用于诊断内燃机中的EGR（排气再循环）系统的装置和方法中，测量一个燃烧行程中的燃烧持续时间（MT），燃烧持续时间至少包括近似燃烧结束时段，预测（ 参考）一个燃烧冲程中的燃烧持续时间（MTA）是基于由EGR系统执行的发动机驱动条件和目标EGR率导出的，并且将测量的燃烧持续时间（MT）与预测（ 参考）燃烧持续时间（MTA）。 根据比较的结果，诊断装置和方法确定EGR系统中的故障是否发生。
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公开(公告)号：US5590633A
公开(公告)日：1997-01-07
申请号：US434391
申请日：1995-05-03
申请人： Naoki Tomisawa , Hajime Hosoya
发明人： Naoki Tomisawa , Hajime Hosoya
CPC分类号： F02D41/345 , F02D41/061 , F02D41/062 , Y02T10/44
摘要： A fuel injection control system for an internal combustion engine equipped with a fuel injection system includes fuel injector valves. The fuel injection control system comprises a control unit for controlling fuel injection for each fuel injector valve. The control unit has a function to control the fuel injection in accordance with a first characteristic required for engine starting before occurrence of an initial explosion in an engine cylinder, and in accordance with a second characteristic required for normal engine operation after occurrence of the initial explosion.
摘要翻译： 配备有燃料喷射系统的内燃机的燃料喷射控制系统包括燃料喷射阀。 燃料喷射控制系统包括用于控制每个燃料喷射阀的燃料喷射的控制单元。 控制单元具有根据在发动机气缸中发生初始爆炸之前发动机起动所需的第一特性来控制燃料喷射的功能，并且根据在发生初始爆炸之后的正常发动机操作所需的第二特性 。
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6.发明授权
公开(公告)号：US5469827A
公开(公告)日：1995-11-28
申请号：US189745
申请日：1994-02-01
申请人： Naoki Tomisawa
发明人： Naoki Tomisawa
CPC分类号： F02D41/062 , F02D41/221 , F02D2041/225 , F02D41/144
摘要： The air/fuel ratio of an intake mixture of an internal combustion engine becomes excessively rich due to fuel leaked from the fuel injection valve into the intake system during a period from shut-down until restart. To overcome the resultant poor starting, the amount of leakage is estimated based on the engine temperature at shut down, and an elapsed time from shut-down until restart which is determined for example based on a difference between the engine shut-down temperature and the engine temperature at restart. The start-up fuel injection amount or the start-up intake flow rate is then corrected corresponding to this leakage amount.As a result, since a suitable start-up air/fuel ratio can be obtained in spite of fuel leakage from the fuel injection valve into the intake system, good engine starting can be ensured.
摘要翻译： 内燃机的进气混合气体的空气/燃料比由于从关闭至再起动的时段期间从燃料喷射阀泄漏到进气系统中的燃料变得过多。 为了克服所得到的差的启动，基于关闭时的发动机温度以及从关闭到再起动的经过时间，例如基于发动机关闭温度和发动机关闭温度之间的差异来确定泄漏量 发动机温度在重启时。 然后根据该泄漏量校正启动燃料喷射量或起动进气流量。 结果，由于尽管燃料从燃料喷射阀泄漏到进气系统中，因此可以获得合适的启动空燃比，可以确保良好的发动机启动。
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7.发明授权
公开(公告)号：US5429098A
公开(公告)日：1995-07-04
申请号：US193753
申请日：1994-02-03
申请人： Naoki Tomisawa
发明人： Naoki Tomisawa
CPC分类号： F02D41/004 , F02M25/08
摘要： The open and close frequency of an intake control valve 30 for controlling an intake amount at an open and close time proportion, is variably controlled in accordance with engine rotational speed or elapsed time. As a result, during control of fuel vapor treatment, biased supply to a specific cylinder of fuel vapor drawn into the engine from an absorption device 29 is suppressed, so that an averaged air-fuel ratio can be obtained for each cylinder. Therefore, combustion variation between the cylinders can be avoided, the increased engine vibration due to the resultant increase in combustion pressure variation reduced, and the deterioration in exhaust composition and vehicle driving performance can be minimized.
摘要翻译： 根据发动机转速或经过时间可变地控制用于以开闭时间比例控制进气量的进气控制阀30的打开和关闭频率。 结果，在燃料蒸气处理的控制中，抑制了从吸收装置29向发动机吸入的燃料蒸汽的特定气缸的偏压供给，从而可以获得每个气缸的平均空燃比。 因此，可以避免气缸之间的燃烧变化，由于燃烧压力变化的增加导致的发动机振动增加，并且可以使排气组成和车辆驾驶性能的劣化最小化。
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8.发明授权
公开(公告)号：US5095743A
公开(公告)日：1992-03-17
申请号：US540616
申请日：1990-06-20
申请人： Naoki Tomisawa
发明人： Naoki Tomisawa
CPC分类号： F02D41/187 , F02D41/222 , F02D41/2474 , Y02T10/40
摘要： Sucked air flow quantities are preliminarily alloted and stored for respective areas of predetermined ranges of the driving state of an engine, and every time a new sucked air flow quantity is detected, the stored value is renewed based on the previously stored value and the newly detected value. In the method and apparatus for detecting deterioration of a sucked air flow quantity-detecting device of an engine according to the present invention, the engine driving state is detected and the stored value of the sucked air flow quantity in the corresponding area is retrieved, the retrieved stored value is compared with the sucked air flow quantity actually detected by the detecting device, and deterioration is judged when the difference therebetween is larger than a predetermined value.
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9.发明授权Fuel supply control system for internal combustion engine with feature providing engine stability in low engine load condition 失效内燃机燃料供应控制系统，具有发动机在低发动机负荷条件下的稳定性
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
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。
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10.发明授权
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
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。
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