公开(公告)号：US07040307B2

公开(公告)日：2006-05-09

申请号：US11209049

申请日：2005-08-23

申请人： Wataru Nagashima ,  Yukihiro Yamashita ,  Naoki Yoshiume

发明人： Wataru Nagashima ,  Yukihiro Yamashita ,  Naoki Yoshiume

IPC分类号： F02B75/08 ,  G01M19/00

CPC分类号： F02D41/222 ,  F01N11/00 ,  F01N2550/00 ,  F02D2041/1431 ,  Y02T10/40

摘要： An air-fuel ratio detected by an air-fuel ratio sensor is periodically varied by executing a PI control. During the PI control, a time period in which the detected air-fuel ratio passes through a predetermined rich-side range is defined as a rich-side time constant, and a time period in which the detected air fuel ratio passes through a predetermined lean-side range is defined as a lean-side time constant. A rich-side time delay represents a time period in which an air-fuel correction amount is increasingly corrected to exceed a rich-side threshold, and a lean-side time delay represents a time period in which the air-fuel correction amount is decreasingly corrected to exceed a lean-side threshold. These time constants and time delays are compared with a determining value to diagnose degradation of an air-fuel ratio sensor.

摘要翻译： 通过执行PI控制来周期性地改变由空燃比传感器检测的空燃比。 在PI控制期间，将检测出的空燃比通过规定的浓侧范围的时间段定义为浓侧时间常数，检测出的空燃比通过规定的稀薄时间 边范围被定义为瘦侧时间常数。 富侧时间延迟表示空燃比校正量越来越多地校正为超过浓侧阈值的时间段，稀侧时间延迟表示空燃比校正量逐渐减少的时间段 修正为超过瘦侧阈值。 将这些时间常数和时间延迟与确定值进行比较以诊断空燃比传感器的劣化。

公开(公告)号：US20060037305A1

公开(公告)日：2006-02-23

申请号：US11209049

申请日：2005-08-23

申请人： Wataru Nagashima ,  Yukihiro Yamashita ,  Naoki Yoshiume

发明人： Wataru Nagashima ,  Yukihiro Yamashita ,  Naoki Yoshiume

IPC分类号： F01N3/00 ,  G01N7/00 ,  G01N33/497

CPC分类号： F02D41/222 ,  F01N11/00 ,  F01N2550/00 ,  F02D2041/1431 ,  Y02T10/40

摘要： An air-fuel ratio detected by an air-fuel ratio sensor is periodically varied by executing a PI control. During the PI control, a time period in which the detected air-fuel ratio passes through a predetermined rich-side range is defined as a rich-side time constant, and a time period in which the detected air fuel ratio passes through a predetermined lean-side range is defined as a lean-side time constant. A rich-side time delay represents a time period in which an air-fuel correction amount is increasingly corrected to exceed a rich-side threshold, and a lean-side time delay represents a time period in which the air-fuel correction amount is decreasingly corrected to exceed a lean-side threshold. These time constants and time delays are compared with a determining value to diagnose degradation of an air-fuel ratio sensor.

摘要翻译： 通过执行PI控制来周期性地改变由空燃比传感器检测的空燃比。 在PI控制期间，将检测出的空燃比通过规定的浓侧范围的时间段定义为浓侧时间常数，检测出的空燃比通过规定的稀薄时间 边范围被定义为瘦侧时间常数。 富侧时间延迟表示空燃比校正量越来越多地校正为超过浓侧阈值的时间段，稀侧时间延迟表示空燃比校正量逐渐减少的时间段 修正为超过瘦侧阈值。 将这些时间常数和时间延迟与确定值进行比较以诊断空燃比传感器的劣化。

公开(公告)号：US07248960B2

公开(公告)日：2007-07-24

申请号：US11520812

申请日：2006-09-14

申请人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

发明人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

IPC分类号： G06G7/70 ,  G06F19/00 ,  G01M15/04

CPC分类号： F02D41/1495 ,  F02D41/1456

摘要： An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.

公开(公告)号：US20070012086A1

公开(公告)日：2007-01-18

申请号：US11520812

申请日：2006-09-14

申请人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

发明人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

IPC分类号： G01N33/497 ,  G01N27/26

CPC分类号： F02D41/1495 ,  F02D41/1456

摘要： An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.

摘要翻译： 提供了一种空燃比传感器监视器，其被设计成当混合物与内燃机的空燃比变为富侧时，监测空燃比传感器的反应特性或响应速率， 侧。 在确定传感器是否故障时，在确定混合物的空燃比或发动机的空燃比控制中，使用监测响应速率。

公开(公告)号：US20050056266A1

公开(公告)日：2005-03-17

申请号：US10938815

申请日：2004-09-13

申请人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

发明人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

IPC分类号： F02D41/14

CPC分类号： F02D41/1495 ,  F02D41/1456

摘要： An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.

摘要翻译： 提供了一种空燃比传感器监视器，其被设计成当混合物与内燃机的空燃比变为富侧时，监测空燃比传感器的反应特性或响应速率， 侧。 在确定传感器是否故障时，在确定混合物的空燃比或发动机的空燃比控制中，使用监测响应速率。

公开(公告)号：US07201160B2

公开(公告)日：2007-04-10

申请号：US10938815

申请日：2004-09-13

申请人： Naoki Yoshiume ,  Yukihiro Yamashita

发明人： Naoki Yoshiume ,  Yukihiro Yamashita

IPC分类号： F02D41/14

CPC分类号： F02D41/1495 ,  F02D41/1456

摘要： An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.

公开(公告)号：US5785025A

公开(公告)日：1998-07-28

申请号：US928401

申请日：1997-09-12

申请人： Naoki Yoshiume ,  Makoto Miwa ,  Shigenori Isomura

发明人： Naoki Yoshiume ,  Makoto Miwa ,  Shigenori Isomura

IPC分类号： F02D33/00 ,  F02D41/12 ,  F02D41/22 ,  F02D41/30 ,  F02D41/38 ,  F02M37/00 ,  F02M37/08 ,  F02M37/10 ,  F02M69/46 ,  F02M69/54 ,  F02M41/00 ,  F02M37/04

CPC分类号： F02D33/003 ,  F02D41/22 ,  F02D41/3082 ,  F02D41/3818 ,  F02M37/0029 ,  F02M37/0058 ,  F02M37/10 ,  F02M69/462 ,  F02M69/54 ,  F02D2200/0602 ,  F02D2250/31 ,  F02D41/123

摘要： In a fuel supply system employing a returnless fuel pipe arrangement, a relief valve is provided at a discharge side of a fuel pump. The relief valve is opened when fuel pressure in the fuel pipe arrangement becomes no less than a system protective pressure, so as to relieve the fuel pressure to protect the system. The relief valve is also arranged to be open when the fuel pressure in the fuel pipe arrangement becomes higher than a target fuel pressure by a predetermined value or when the fuel cut is performed. Thus, the fuel pressure in the fuel pipe arrangement is lowered. Thereafter, when the fuel pressure in the fuel pipe arrangement is lowered to a pressure near the target fuel pressure, the relief valve is arranged to be closed so that the fuel pressure in the fuel pipe arrangement is held substantially at the target fuel pressure.

摘要翻译： 在采用无回流燃料管路装置的燃料供给系统中，在燃料泵的排出侧设置有安全阀。 当燃料管装置中的燃料压力变得不小于系统保护压力时，安全阀打开，以便减轻燃料压力以保护系统。 当燃料管道装置中的燃料压力高于目标燃料压力预定值时或者当执行燃料切断时，安全阀也被布置成打开。 因此，燃料管路装置中的燃料压力降低。 此后，当燃料管路装置中的燃料压力降低到接近目标燃料压力的压力时，安全阀被设置为关闭，使得燃料管路装置中的燃料压力基本上保持在目标燃料压力。

公开(公告)号：US20080135002A1

公开(公告)日：2008-06-12

申请号：US11946083

申请日：2007-11-28

申请人： Naoki Yoshiume ,  Toshifumi Hayami

发明人： Naoki Yoshiume ,  Toshifumi Hayami

IPC分类号： F01L1/34 ,  F01L9/02

CPC分类号： F01L1/3442 ,  F02D41/083 ,  F02D2041/001 ,  F02D2250/22

摘要： A controller is provided to an engine including a variable valve timing unit for manipulating a valve timing of an intake valve of the engine. The controller includes an idle-continuation determining unit for determining whether an idling operation of the engine is in a continued state. The controller further includes a torque reserve control unit for executing a torque reserve control to advance the valve timing and increase an intake air quantity of the engine within a combustion limit of the engine when the idle-continuation determining unit determines that the idling operation is in the continued state. The controller further includes a torque correction unit for executing a torque correction control to retard the valve timing in the torque reserve control in at least one of conditions where: an auxiliary device exerts a load; the load is increased; and a vehicle starts moving.

摘要翻译： 控制器提供给包括用于操纵发动机的进气门的气门正时的可变气门正时单元的发动机。 控制器包括用于确定发动机的空转操作是否处于连续状态的怠速继续确定单元。 控制器还包括扭矩储备控制单元，用于执行扭矩储备控制以提前气门正时，并且当怠速继续确定单元确定空转操作是在发动机的燃烧极限时，增加发动机的燃烧极限内的进气量 持续状态。 控制器还包括扭矩校正单元，用于执行扭矩校正控制以在至少一个以下条件中延迟转矩保持控制中的气门正时：辅助装置施加负载; 负载增加; 车辆开始移动。

公开(公告)号：US07103467B2

公开(公告)日：2006-09-05

申请号：US11089333

申请日：2005-03-25

申请人： Yuri Takahashi ,  Hisashi Iida ,  Shuujirou Morinaga ,  Naoki Yoshiume

发明人： Yuri Takahashi ,  Hisashi Iida ,  Shuujirou Morinaga ,  Naoki Yoshiume

IPC分类号： F02D45/00 ,  G06F17/00

CPC分类号： F02D41/222 ,  F02D41/1454 ,  Y02T10/40

摘要： When the output of the AFR ratio sensor is stable in a steady operating state, the amount of fuel is increased by step inputting to detect a point where the gradient of change in the sensor output exceeds a threshold value as a point of start of change. The time from the timing of increasing the fuel until the point of start of change is detected as a dead time. A response time is calculated until the amount of change in the sensor output reaches a predetermined ratio of the amount of change (AA−BA) of up to the steady value AA of the sensor output after the amount of the fuel is increased from the steady value BA of the sensor output before the amount of the fuel is increased. The fail condition in the AFR ratio sensor is determined based on the dead time TA and the response time TB.

摘要翻译： 当AFR比传感器的输出在稳定运行状态下稳定时，通过步进输入增加燃料量，以检测传感器输出的变化梯度超过阈值作为变化点的点。 从增加燃料的时间到变化开始的时间被检测为死区时间。 计算出响应时间，直到传感器输出的变化量达到预定量的变化量（AA-BA），直到传感器输出的稳定值AA从稳定值增加为止 在燃料量增加之前传感器输出的值BA。 基于死区时间TA和响应时间TB确定AFR比传感器的故障条件。

公开(公告)号：US06223731B1

公开(公告)日：2001-05-01

申请号：US08920728

申请日：1997-08-29

申请人： Naoki Yoshiume ,  Shigenori Isomura

发明人： Naoki Yoshiume ,  Shigenori Isomura

IPC分类号： F02M5704

CPC分类号： F02D41/3082 ,  F02D41/1401 ,  F02D41/3836 ,  F02D41/3845 ,  F02D2041/1433 ,  F02D2041/1434 ,  F02D2250/02

摘要： A fuel transfer model of a fuel supply system is used to set and control the fuel pump of a return less fuel injection system. The model simulates characteristics of the fuel pump, fuel pressure transfer delay of fuel supply conduits and fuel pressure variation characteristics such as caused by expansion and compression of the fuel supply conduit volume due to an elastic coefficient and the like. The fuel pump model simulates a torque applied to the fuel pump motor, inertia, and the relationships between pump rotational speed, fuel pressure and fuel pump discharge amounts. A compensation control arithmetic calculation model may be derived from inverse calculation based on this fuel transfer model. The compensating current obtained from such an arithmetic model provides compensation for control of the fuel pump by adding a first value obtained by waveform shaping (through a first differentiation of the fuel injection amount) and a second value obtained by waveform shaping (through a second differentiation of the fuel injection amount).

摘要翻译： 燃料供给系统的燃料传递模型用于设置和控制回流燃料喷射系统的燃料泵。 该模型模拟燃料泵的特性，燃料供应管道的燃料压力传递延迟以及由于弹性系数等导致的燃料供应管道体积的膨胀和压缩引起的燃料压力变化特性。 燃油泵型号模拟施加到燃油泵电机的转矩，惯性以及泵转速，燃料压力和燃油泵排出量之间的关系。 可以基于该燃料转移模型从逆计算导出补偿控制算术计算模型。 由这种算术模型获得的补偿电流通过将通过波形整形（通过燃料喷射量的第一微分）获得的第一值和通过波形整形获得的第二值（通过第二微分） 的燃料喷射量）。