公开(公告)号：US4707241A

公开(公告)日：1987-11-17

申请号：US835031

申请日：1986-02-28

申请人： Toyoaki Nakagawa ,  Shisei Kai

发明人： Toyoaki Nakagawa ,  Shisei Kai

IPC分类号： G01N27/26 ,  F02D41/00 ,  F02D41/04 ,  F02D41/14 ,  G01N27/27 ,  G01N27/406 ,  G01N27/409 ,  G01N27/419 ,  G01N27/46

CPC分类号： G01N27/4065 ,  F02D41/1476 ,  F02D41/148 ,  F02D41/1456

摘要： The invention relates to a control system for feedback control of the air/fuel ratio in an internal combustion engine by using a solid electrolyte oxygen sensor to sense oxygen in the exhaust gas. The oxygen sensor is of the type having an oxygen concentration cell and an oxygen ion pump cell to which a pumping current is supplied to vary the partial pressure of oxygen in the exhaust gas admitted in a measurement space in the sensor. The pumping current is controlled so as to nullify a difference between the output voltage of the oxygen concentration cell and a target voltage. A signal derived from the controlled pumping current is used as an air/fuel ratio signal on the premise that a definite correlation exists between the magnitude of the pumping current and the oxygen concentration in the exhaust gas. To commence feedback control of the air/fuel ratio soon after starting the engine and after establishment of the definite correlation without unnecessary delay, the control system includes discrimination means for forming a judgment that the expected definite correlation has been established if the output voltage of the oxygen concentration cell surely falls within a predetermined tolerance range containing the target voltage. When such a judgment is formed the feedback control is immediately commenced.

摘要翻译： 本发明涉及一种用于通过使用固体电解质氧传感器来感测废气中的氧气来反馈控制内燃机中的空燃比的控制系统。 氧传感器是具有氧浓度单元和氧离子泵单元的类型，其中供给泵送电流以改变传感器中测量空间中允许的废气中的氧分压。 控制泵浦电流以消除氧浓度电池的输出电压与目标电压之间的差。 在受控的泵浦电流导出的信号作为空气/燃料比信号的前提下，在泵送电流的大小与废气中的氧浓度之间存在一定的相关性的前提下。 为了在起动发动机之后立即开始对空燃比进行反馈控制，并且在没有不必要的延迟的情况下建立确定的相关性之后，控制系统包括用于形成如果所确定的预定定相关已经确定的判断装置的鉴别装置， 氧浓度电池确实落在包含目标电压的预定公差范围内。 当形成这样的判断时，反馈控制立即开始。

公开(公告)号：US4913122A

公开(公告)日：1990-04-03

申请号：US141732

申请日：1988-01-11

申请人： Masaaki Uchida ,  Shisei Kai

发明人： Masaaki Uchida ,  Shisei Kai

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

CPC分类号： F02D41/2454 ,  F02D41/2445

摘要： An air-fuel ratio control system for controlling the air-fuel ratio of air-fuel mixture to be inducted into an automotive engine in order to accomplish feedback control of the air-fuel ratio into a stoichiometric level of feedforward control of the air-fuel ratio into a lean level. The air-fuel ratio control system is comprised of a control unit which is electrically connected to an oxygen sensor for detecting the air-fuel ratio and to a variety of sensors for detecting engine operating condition. The control unit is adapted to calculate an air-fuel ratio correction coefficient in accordance with the detected air-fuel ratio. The feedback control of the air-fuel ratio is accomplished in accordance with the air-fuel ratio correction coefficient. The control unit is further adapted to form a plurality of learning areas defined respectively by engine operating conditions. Learning is made in each learning area. At least a part of each learning area is under the feedback control. The control unit is adapted to further calculate a learning coefficient for the learning area corresponding to the detected engine operating condition, in accordance with the air-fuel ratio correction coefficient under the feedback control. The learning coefficient is memorized in the above-mentioned at least a part of each learning area. The feedforward control of the air-fuel ratio is accomplished in accordance with the learning coefficient in the learning area corresponding to the detected engine operating condition, thereby improving the precision of control in the feedforward control of the air-fuel ratio.

摘要翻译： 一种空燃比控制系统，用于控制要引入汽车发动机的空气燃料混合物的空燃比，以实现空燃比的反馈控制为空燃比的前馈控制的化学计量级 比例变为精益水平。 空燃比控制系统包括与用于检测空燃比的氧传感器电连接的控制单元和用于检测发动机工作状态的各种传感器。 控制单元适于根据检测到的空燃比计算空燃比校正系数。 空燃比的反馈控制是根据空燃比校正系数来实现的。 控制单元进一步适于形成分别由发动机操作条件限定的多个学习区域。 学习是在每个学习领域进行的。 每个学习领域的至少一部分都在反馈控制之下。 控制单元适于根据反馈控制下的空燃比校正系数进一步计算与检测到的发动机运转状况对应的学习区域的学习系数。 学习系数存储在上述每个学习区域的至少一部分中。 空燃比的前馈控制根据与检测到的发动机运转状况对应的学习区域的学习系数来实现，从而提高空燃比的前馈控制的控制精度。

公开(公告)号：US07797098B2

公开(公告)日：2010-09-14

申请号：US12091377

申请日：2006-10-26

申请人： Shisei Kai ,  Masao Okada

发明人： Shisei Kai ,  Masao Okada

IPC分类号： F02D29/00

CPC分类号： F02D41/021 ,  B60W10/06 ,  B60W10/30 ,  B60W30/188 ,  B60W2710/0616 ,  F02D29/04 ,  F02D29/06 ,  F02D41/40 ,  Y02T10/44

摘要： An engine control device, which is capable of preventing fuel from being consumed more than necessary when a PTO device is in operation, is provided. An engine control device (5), in which a PTO device (12) is connected to a vehicle engine (1) and which controls a fuel injection quantity of the vehicle engine (1) when the PTO device (12) is in operation, is provided with PTO switching means for switching between operation and non-operation of the PTO device (12), and PTO fuel limiting means (3) for limiting a fuel injection quantity of the vehicle engine (1) to be less than a predetermined fuel limit value that is set in advance, when the PTO device (12) is switched to an operational state by the PTO switching means.

摘要翻译： 提供了一种发动机控制装置，其能够在PTO装置运行时能够防止燃料消耗超过必要。 一种发动机控制装置（5），其中PTO装置（12）连接到车辆发动机（1）并且当PTO装置（12）运行时控制车辆发动机（1）的燃料喷射量， 设有用于在PTO装置（12）的操作和非操作之间切换的PTO切换装置和用于将车辆发动机（1）的燃料喷射量限制为小于预定燃料的PTO燃料限制装置（3） 当PTO装置（12）由PTO切换装置切换到运行状态时，预先设定的限制值。

公开(公告)号：US20090287395A1

公开(公告)日：2009-11-19

申请号：US12091377

申请日：2006-10-26

申请人： Shisei Kai ,  Masao Okada

发明人： Shisei Kai ,  Masao Okada

IPC分类号： F02D29/00

CPC分类号： F02D41/021 ,  B60W10/06 ,  B60W10/30 ,  B60W30/188 ,  B60W2710/0616 ,  F02D29/04 ,  F02D29/06 ,  F02D41/40 ,  Y02T10/44

摘要： An engine control device, which is capable of preventing fuel from being consumed more than necessary when a PTO device is in operation, is provided. An engine control device (5), in which a PTO device (12) is connected to a vehicle engine (1) and which controls a fuel injection quantity of the vehicle engine (1) when the PTO device (12) is in operation, is provided with PTO switching means for switching between operation and non-operation of the PTO device (12), and PTO fuel limiting means (3) for limiting a fuel injection quantity of the vehicle engine (1) to be less than a predetermined fuel limit value that is set in advance, when the PTO device (12) is switched to an operational state by the PTO switching means.

摘要翻译： 提供了一种发动机控制装置，其能够在PTO装置运行时能够防止燃料消耗超过必要。 一种发动机控制装置（5），其中PTO装置（12）连接到车辆发动机（1）并且当PTO装置（12）运行时控制车辆发动机（1）的燃料喷射量， 设有用于在PTO装置（12）的操作和非操作之间切换的PTO切换装置和用于将车辆发动机（1）的燃料喷射量限制为小于预定燃料的PTO燃料限制装置（3） 当PTO装置（12）由PTO切换装置切换到运行状态时，预先设定的限制值。

公开(公告)号：US5253547A

公开(公告)日：1993-10-19

申请号：US870907

申请日：1992-04-20

申请人： Sachkio Yoneyama ,  Hisao Ohkawa ,  Shisei Kai ,  Takeshi Houkita

发明人： Sachkio Yoneyama ,  Hisao Ohkawa ,  Shisei Kai ,  Takeshi Houkita

IPC分类号： F01M1/06 ,  F02B75/18 ,  F02B75/20 ,  F16F15/26 ,  F16F15/10 ,  F16H37/06

CPC分类号： F02B75/20 ,  F16F15/267 ,  F01M1/06 ,  F02B2075/1816 ,  Y10T74/2184

摘要： A balancer device installed to an in-line engine comprises a balance shaft which includes first and second journals at which the balance shaft is supported through first and second bearings. The first bearing is disposed near the front side of the engine and set in a retainer for rotatably fixing the balance shaft. The second bearing is disposed near a generally center portion in the axial direction of the crankshaft and secured to a cylinder block. A pair of unbalance portions are disposed near the second journal. The diameter of the first journal is formed smaller than that of the second journal to suppress the friction loss of the first journal.

摘要翻译： 安装到直列式发动机的平衡器装置包括平衡轴，该平衡轴包括第一和第二轴颈，平衡轴通过第一和第二轴颈支撑通过第一和第二轴承。 第一轴承设置在发动机的前侧附近，并设置在用于可旋转地固定平衡轴的保持器中。 第二轴承设置在曲轴的轴向方向上的大致中心部附近并固定在气缸体上。 一对不平衡部分设置在第二颈部附近。 第一轴颈的直径形成为小于第二轴颈的直径，以抑制第一轴颈的摩擦损失。