公开(公告)号：US20150354487A1

公开(公告)日：2015-12-10

申请号：US14763592

申请日：2013-01-29

申请人： Takanori SASAKI ,  Go HAYASHITA ,  Yuji MIYOSHI

发明人： Takanori SASAKI ,  Go HAYASHITA ,  Yuji MIYOSHI

IPC分类号： F02D41/14 ,  F01N3/22

CPC分类号： F02D41/1444 ,  F01N3/225 ,  F01N2900/0402 ,  F01N2900/0416 ,  F02D41/0295 ,  F02D41/1402 ,  F02D41/1439 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1473 ,  F02D41/1475 ,  F02D41/1477 ,  F02D2041/1422 ,  F02D2200/0814 ,  G01N27/41

摘要： A control device for an internal combustion engine, equipped with: an exhaust purification catalyst provided in the exhaust passage of the internal combustion engine and capable of absorbing oxygen; a downstream air-fuel ratio sensor provided downstream from the exhaust purification catalyst in the direction of the exhaust flow; and an engine control device that controls the internal combustion engine in response to the output from the downstream air-fuel ratio sensor. The downstream air-fuel ratio sensor is configured such that the applied voltage for which the output current is zero changes in response to the exhaust air-fuel ratio, and such that when the exhaust air-fuel ratio equals the theoretical air-fuel ratio and the applied voltage in the downstream air-fuel ratio sensor is increased, the output current increases in conjunction therewith. When the air-fuel ratio of the exhaust gas is detected by the downstream air-fuel ratio sensor, the applied voltage in the downstream air-fuel ratio sensor is fixed at a constant voltage, with this constant voltage being a voltage for which the output current is zero when the exhaust air-fuel ratio is a predetermined air-fuel ratio that is leaner than the theoretical air-fuel ratio.

摘要翻译： 一种内燃机的控制装置，具备：排气净化催化剂，其设置在内燃机的排气通路中，能够吸收氧气; 下游空燃比传感器，其设置在所述排气净化催化剂的排出流动方向的下游; 以及发动机控制装置，其响应于来自下游空燃比传感器的输出来控制内燃机。 下游空燃比传感器被配置为使得输出电流为零的施加电压响应于排气空燃比而变化，并且当排气空燃比等于理论空燃比时，以及 下游空燃比传感器中的施加电压增加，输出电流随之增加。 当通过下游空燃比传感器检测到排气的空燃比时，下游空燃比传感器中的施加电压被固定为恒定电压，该恒定电压为输出 当排气空燃比是比理论空燃比稀的预定空燃比时，电流为零。

公开(公告)号：US20160017828A1

公开(公告)日：2016-01-21

申请号：US14763555

申请日：2013-01-29

申请人： Go HAYASHITA ,  Keiichiro AOKI

发明人： Go HAYASHITA ,  Keiichiro AOKI

IPC分类号： F02D41/14

CPC分类号： F02D41/1454 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  G01N27/4065 ,  G01N27/419

摘要： This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor provided to the exhaust passage of an internal combustion engine; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is equipped with: a gas chamber to be measured, into which exhaust gas flows; a pump cell that pumps oxygen into or out of the gas chamber to be measured according to the pump current; and a reference cell of which the reference cell output current detected varies according to the air/fuel ratio inside the gas chamber to be measured. The reference cell is equipped with: a first electrode that is exposed to the exhaust gas in the gas chamber to be measured; a second electrode exposed to a reference atmosphere; and a solid electrolyte layer arranged between the electrodes. The air/fuel ratio sensor is equipped with: a reference cell voltage applying device that applies a sensor applied voltage between the electrodes; and a reference cell output current detection device that detects, as the reference cell output current, the current flowing between the electrodes.

摘要翻译： 该内燃机用控制装置具备：设置于内燃机的排气通路的空气/燃料比传感器; 以及根据空燃比传感器的输出来控制内燃机的发动机控制装置。 空气/燃料比传感器配备有：待测量的气体室，废气流动到其中; 泵电池根据泵浦电流将氧气输入或流出待测量的气室; 并且根据待测量的气体室内的空气/燃料比，检测出参考单元输出电流的参考单元变化。 参考电池配备有：暴露于要测量的气室中的废气的第一电极; 暴露于参考气氛的第二电极; 以及设置在电极之间的固体电解质层。 空气/燃料比传感器配备有：在电极之间施加传感器施加电压的参考电池电压施加装置; 以及参考单元输出电流检测装置，其检测在电极之间流动的电流作为参考单元输出电流。

公开(公告)号：US20160017829A1

公开(公告)日：2016-01-21

申请号：US14763566

申请日：2013-01-29

申请人： Go HAYASHITA ,  Keiichiro AOKI

发明人： Go HAYASHITA ,  Keiichiro AOKI

IPC分类号： F02D41/14

CPC分类号： F02D41/1454 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  G01N27/403 ,  G01N27/4065 ,  G01N27/4076

摘要： This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio. When the air/fuel ratio of exhaust gas is to be detected by the air/fuel ratio sensor, the applied voltage at the air/fuel ratio sensor is fixed at a constant voltage, said constant voltage being different to the voltage at which the output current reaches zero when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio, and being the voltage at which the output current reaches zero when the exhaust air/fuel ratio is different to the stoichiometric air/fuel ratio. Thus provided is a control device for an internal combustion engine that uses an air/fuel ratio sensor capable of detecting an absolute value for the air/fuel ratio of exhaust gas even if the air/fuel ratio of the exhaust gas is not the stoichiometric air/fuel ratio.

摘要翻译： 该内燃机的控制装置配备有：空燃比传感器; 以及根据空燃比传感器的输出来控制内燃机的发动机控制装置。 空气/燃料比传感器被配置为使得输出电流达到零的施加电压根据排气/燃料比而变化，并且如果当空气/燃料比传感器的施加电压增加时，输出电流增加 排气/燃料比是理论空燃比。 当空燃比传感器检测排气的空气/燃料比时，将空气/燃料比传感器的施加电压固定为恒定电压，所述恒定电压与输出的电压不同 当排气/燃料比是化学计量空气/燃料比时，当排气/燃料比不同于理论空燃比时，电流达到零时，电流达到零。 因此，即使废气的空气/燃料比不是化学计量空气，也可以使用能够检测废气的空气/燃料比的绝对值的空气/燃料比传感器的内燃机的控制装置 /燃料比。

公开(公告)号：US20150337752A1

公开(公告)日：2015-11-26

申请号：US14441681

申请日：2013-05-24

申请人： Keiichiro AOKI ,  Go HAYASHITA

发明人： Keiichiro AOKI ,  Go HAYASHITA

IPC分类号： F02D41/14

CPC分类号： F02D41/1454 ,  F02D41/1456 ,  G01N27/4065 ,  G01N27/4072

摘要： A sensor for detecting oxygen concentration in exhaust gas or an air-fuel ratio provided with a solid electrolyte body, an exhaust gas side electrode being disposed on one side of the solid electrolyte body and being in contact with the exhaust gas, an atmosphere side electrode being disposed on the other side of the solid electrolyte body and being in contact with the atmosphere, and an electric circuit applying a reference voltage between these electrodes is arranged in an engine exhaust passage. The sensor for detecting the oxygen concentration in the exhaust gas or the air-fuel ratio has a characteristic in which an output current continues to increase without having a limiting current region when the voltage applied between the electrodes is increased while the air-fuel ratio is constant. The air-fuel ratio is controlled based on the output current of the sensor for detecting the oxygen concentration in the exhaust gas or the air-fuel ratio.

摘要翻译： 一种用于检测废气中的氧浓度的传感器或设置有固体电解质体的空燃比，排气侧电极设置在固体电解质体的一侧并与废气接触的气体侧电极 设置在固体电解质体的另一侧并与大气接触，并且在这些电极之间施加参考电压的电路布置在发动机排气通道中。 用于检测排气中的氧浓度的传感器或空燃比具有当电极之间施加的电压增加时输出电流继续增加而不具有限制电流区域的特性，而空燃比为 不变。 基于用于检测排气中的氧浓度的传感器的输出电流或空燃比来控制空燃比。

公开(公告)号：US20150369156A1

公开(公告)日：2015-12-24

申请号：US14763022

申请日：2013-01-29

申请人： Keiichiro AOKI ,  Go HAYASHITA

发明人： Go HAYASHITA ,  Keiichiro AOKI

IPC分类号： F02D41/14 ,  F02D41/02

CPC分类号： F02D41/1455 ,  F02D41/0235 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1473 ,  G01N27/41

摘要： This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor provided to the exhaust passage of an internal combustion engine; and an engine control device that controls the internal combustion engine on the basis of the sensor output current of the air/fuel ratio sensor. The air/fuel ratio sensor is equipped with: a gas chamber to be measured, into which exhaust gas flows; a reference cell for which the reference cell output current varies according to the air/fuel ratio of the exhaust gas inside the gas chamber to be measured; and a pump cell that, according to the pump current, pumps oxygen into or out of the exhaust gas in the gas chamber to be measured. The reference cell is configured so that the applied voltage, at which the reference cell output current reaches zero, varies according to the air/fuel ratio of the exhaust gas in the gas chamber to be measured. The applied voltage in the reference cell is fixed at a constant voltage, said constant voltage being set to a voltage different to the voltage at which the reference cell output current reaches zero when the air/fuel ratio of the exhaust gas in the gas chamber to be measured is the stoichiometric air/fuel ratio.

摘要翻译： 该内燃机用控制装置具备：设置于内燃机的排气通路的空气/燃料比传感器; 以及基于空燃比传感器的传感器输出电流来控制内燃机的发动机控制装置。 空气/燃料比传感器配备有：待测量的气体室，废气流动到其中; 参考单元，其参考单元输出电流根据待测量的气室内的排气的空燃比而变化; 以及泵电池，其根据泵浦电流将氧气输入或输出待测量的气室中的废气。 参考单元被配置为使得参考单元输出电流达到零的施加电压根据待测气室中的排气的空燃比而变化。 参考单元中的施加电压被固定为恒定电压，所述恒定电压被设定为与气体室中的废气的空气/燃料比相对于参考单元的输出电流达到零的电压不同的电压 测量的是化学计量空气/燃料比。