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公开(公告)号：US08613219B2
公开(公告)日：2013-12-24
申请号：US13642820
申请日：2010-04-23
申请人： Koichi Kitaura , Takahiko Fujiwara , Yuuji Miyoshi , Ryota Onoe
发明人： Koichi Kitaura , Takahiko Fujiwara , Yuuji Miyoshi , Ryota Onoe
IPC分类号： G01M15/10
CPC分类号： F02D41/1441 , F01N3/101 , F01N11/007 , F01N2560/025 , F01N2560/14 , F01N2900/0416 , F01N2900/1402 , F01N2900/1624 , F02D41/1475 , Y02T10/22 , Y02T10/47
摘要： Active air-fuel ratio control is performed to alternately control an air-fuel ratio in an area located upstream of a catalyst between a lean side and a rich side. Switching is carried out between lean control and rich control at the same time when an output from a post-catalyst sensor reaches a threshold. Whether the catalyst is normal or abnormal is determined based on the rate of a change in the output from the post-catalyst sensor between a first point of time when a pre-catalyst air-fuel ratio reaches stoichiometry after the output from the post-catalyst sensor reaches the threshold and a second point of time when the output from the post-catalyst sensor reaches the threshold next time.
摘要翻译： 执行主动空燃比控制以交替地控制位于贫侧和富侧之间的催化剂上游的区域中的空燃比。 在后催化剂传感器的输出达到阈值的同时，在稀薄控制和浓控制之间进行切换。 基于催化剂后传感器的输出的变化率，在催化剂后催化剂的输出后催化剂前空燃比达到化学计量的第一时间点之后，确定催化剂是正常还是异常 传感器达到阈值，而后催化剂传感器的输出下一次达到阈值的第二时间点。
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公开(公告)号：US20130036808A1
公开(公告)日：2013-02-14
申请号：US13642820
申请日：2010-04-23
申请人： Koichi Kitaura , Takahiko Fujiwara , Yuuji Miyoshi , Ryota Onoe
发明人： Koichi Kitaura , Takahiko Fujiwara , Yuuji Miyoshi , Ryota Onoe
IPC分类号： G01M15/10
CPC分类号： F02D41/1441 , F01N3/101 , F01N11/007 , F01N2560/025 , F01N2560/14 , F01N2900/0416 , F01N2900/1402 , F01N2900/1624 , F02D41/1475 , Y02T10/22 , Y02T10/47
摘要： Active air-fuel ratio control is performed to alternately control an air-fuel ratio in an area located upstream of a catalyst between a lean side and a rich side. Switching is carried out between lean control and rich control at the same time when an output from a post-catalyst sensor reaches a threshold. Whether the catalyst is normal or abnormal is determined based on the rate of a change in the output from the post-catalyst sensor between a first point of time when a pre-catalyst air-fuel ratio reaches stoichiometry after the output from the post-catalyst sensor reaches the threshold and a second point of time when the output from the post-catalyst sensor reaches the threshold next time.
摘要翻译： 执行主动空燃比控制以交替地控制位于贫侧和富侧之间的催化剂上游的区域中的空燃比。 在后催化剂传感器的输出达到阈值的同时，在稀薄控制和浓控制之间进行切换。 基于催化剂后传感器的输出的变化率，在催化剂后催化剂的输出后催化剂前空燃比达到化学计量的第一时间点之后，确定催化剂是正常还是异常 传感器达到阈值，而后催化剂传感器的输出下一次达到阈值的第二时间点。
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公开(公告)号：US20110283959A1
公开(公告)日：2011-11-24
申请号：US12785034
申请日：2010-05-21
申请人： Koji ASO , Takahiko Fujiwara , Hiroshi Tanaka
发明人： Koji ASO , Takahiko Fujiwara , Hiroshi Tanaka
CPC分类号： F02M31/14 , F01N3/30 , F01N9/00 , F01N2240/30 , F01N2610/02 , F01N2610/03 , F02D19/0644 , F02D19/0671 , F02D19/081 , F02D41/0025 , F02D41/0235 , F02D2200/0802 , F02M23/10 , F02M31/18 , Y02T10/126
摘要： An ammonia burning internal combustion engine in which, in addition to ammonia, a reformed gas reformed at a reformer is fed into a combustion chamber. When a reforming ability of the reformer is less than a predetermined reforming ability, an ammonia ratio is increased to a ratio more than the ammonia ratio after completion of engine warmup set in advance in accordance with an operation state of the engine, and secondary air is fed from a secondary air feeding device into an engine exhaust passage upstream of an exhaust purification catalyst.
摘要翻译： 除了氨之外，在重整器中重整的重整气体中的氨燃烧内燃机被送入燃烧室。 当重整器的重整能力小于预定的重整能力时，根据发动机的运行状态，氨预测比例提高到预先设定的发动机预热完成后的氨比例，并且二次空气为 从二次空气供给装置进入排气净化催化剂上游的发动机排气通路。
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公开(公告)号：US20070089398A1
公开(公告)日：2007-04-26
申请号：US11583726
申请日：2006-10-20
申请人： Takahiko Fujiwara , Yasuyuki Takama
发明人： Takahiko Fujiwara , Yasuyuki Takama
CPC分类号： F01N11/007 , F01N2900/0421 , F01N2900/0422 , Y02T10/47
摘要： During deterioration detection of a catalyst, exhaust gas of a lean air/fuel ratio and exhaust gas of a rich air/fuel ratio are alternately supplied to the catalyst, and decrease of the O2 storage function is detected by obtaining the oxygen occlusion amount in the catalyst, based upon the timing at which, after changeover of the air/fuel ratio of the exhaust gas flowing into the catalyst, the air/fuel ratio of the exhaust gas passed through the catalyst changes to track that air/fuel ratio of the exhaust gas flowing into the catalyst. At this time, the rich air/fuel ratio of the exhaust gas and the lean air/fuel ratio of the exhaust gas supplied to the catalyst are set closer to the stoichiometric air/fuel ratio, the larger is the exhaust flow amount.
摘要翻译： 在催化剂的劣化检测期间，将稀空气/燃料比的废气和浓空气/燃料比的废气交替地供给到催化剂中，并且检测到O 2存储功能的降低 通过在催化剂中获得氧气吸留量，基于流过催化剂的废气的空气/燃料比的切换之后，通过催化剂的排气的空气/燃料比变化为轨迹 流入催化剂的废气的空气/燃料比。 此时，供给到催化剂的废气的浓空气/燃料比和稀空气/燃料比被设定为接近理论空燃比，废气流量越大。
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55.发明授权Video output circuit with wide bandwidth and low power consumption for high resolution display 失效视频输出电路具有宽带宽和低功耗，可实现高分辨率显示
公开(公告)号：US5337090A
公开(公告)日：1994-08-09
申请号：US986033
申请日：1992-12-04
CPC分类号： H03H7/06 , H03F3/191 , H03F3/45071 , H04N5/148 , H04N5/208
摘要： A video output circuit of a wide bandwidth comprises a bridged-T-type circuit, a first inductor connected in series to the bridged-T-type circuit, and a shunt circuit connected in series to the bridged-T-type circuit and including a second inductor and a first resistor connected in parallel with each other. The bridged-T-type circuit, the first inductor and the shunt circuit cooperate to constitute together with a plurality of stray capacitors a low-pass filter whose order is at least 4 and whose merit index is at least 3.
摘要翻译： 宽带宽的视频输出电路包括桥接T型电路，与桥接T型电路串联连接的第一电感器，以及与桥接T型电路串联连接的并联电路，包括： 第二电感器和第一电阻器彼此并联连接。 桥接T型电路，第一电感器和分流电路配合与多个杂散电容器一起构成低阶滤波器，其阶数至少为4，其优点指数至少为3。
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公开(公告)号：US09790873B2
公开(公告)日：2017-10-17
申请号：US13700248
申请日：2010-05-28
申请人： Makoto Tomimatsu , Ryota Onoe , Takahiko Fujiwara
发明人： Makoto Tomimatsu , Ryota Onoe , Takahiko Fujiwara
CPC分类号： F02D41/00 , F02D41/1441 , F02D41/1456 , F02D41/1479 , F02D41/1482 , F02D41/1483 , F02D41/2454 , F02D41/30
摘要： An air-fuel ratio control controls an air-fuel ratio (air-fuel ratio of an engine) of a mixture supplied to the engine, based on an output value of the downstream-side air-fuel ratio sensor disposed downstream of a catalyst. That is, the air-fuel ratio control apparatus sets the air-fuel ratio of the engine at a rich air-fuel ratio when the output Voxs is smaller than a reference value VREF (when a rich request is occurring). The air-fuel ratio control apparatus sets the air-fuel ratio of the engine at a lean air-fuel ratio when the output Voxs is larger than a reference value VREF (when a lean request is occurring). The air-fuel ratio control apparatus makes the target value VREF gradually come closer to a reference value VF (stoichiometric air-fuel ratio corresponding value) from a certain value, when the output value Voxs deviates greatly from the reference value Vf (points P1-P3).
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公开(公告)号：US09188072B2
公开(公告)日：2015-11-17
申请号：US13825705
申请日：2010-09-24
CPC分类号： F02D41/0235 , F01N13/008 , F01N13/0093 , F01N2560/025 , F02D17/02 , F02D41/0085 , F02D41/1441 , F02D41/1454 , F02D41/1458 , F02D41/1463 , F02D41/2454 , Y02T10/22
摘要： An embodiment (control apparatus) of an air-fuel ratio control apparatus according to the present invention determines, based on an output value Voxs of a downstream air-fuel ratio sensor 56 disposed at a position downstream of a three-way catalyst 43, which air-fuel request is occurring, a rich request or a lean request. The control apparatus sets an air-fuel ratio of each cylinder (cylinder-by-cylinder air-fuel ratio) to a rich air-fuel ratio when the rich request is occurring, and sets the cylinder-by-cylinder air-fuel ratio to a lean air-fuel ratio when the lean request is occurring. The control apparatus has a cylinder-by-cylinder air-fuel ratio of a specific cylinder different from a cylinder-by-cylinder air-fuel ratio of the other cylinder so as to obtain a fluctuation period correlated value indicative of a fluctuation of the output value Voxs of the downstream air-fuel ratio sensor 56, and determines an influence/impact degree on the output value of the downstream air-fuel ratio sensor of an exhaust gas discharged from each of a plurality of cylinders, based on the fluctuation period correlated value. Further, the control apparatus controls the air-fuel ratio of each cylinder in accordance with the influence degree.
摘要翻译： 根据本发明的空燃比控制装置的一个实施例（控制装置）基于设置在三元催化剂43下游的下游空燃比传感器56的输出值Voxs， 空气燃料请求正在发生，丰富的请求或精益请求。 控制装置在发生丰满请求时将各气缸的空燃比（气缸/空气比）逐个设定为浓空燃比，并且将逐缸空燃比设定为 在发生精益请求时的贫空燃比。 所述控制装置具有与所述另一个气缸的与所述气缸的空燃比不同的特定气缸的逐缸空燃比，以获得表示所述输出的波动的波动周期相关值 下游空燃比传感器56的Vox值，并且基于波动周期相关地确定对从多个气缸中的每一个排出的排气的下游空燃比传感器的输出值的影响/冲击程度 值。 此外，控制装置根据影响程度来控制各气缸的空燃比。
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公开(公告)号：US08712667B2
公开(公告)日：2014-04-29
申请号：US13320666
申请日：2009-05-21
申请人： Tomohiro Nakano , Takahiko Fujiwara
发明人： Tomohiro Nakano , Takahiko Fujiwara
IPC分类号： B60T7/12
CPC分类号： F02D41/0235 , F01N13/009 , F02D41/1441
摘要： A air-fuel ratio control apparatus, applied to an internal combustion engine having a catalyst disposed in an exhaust passage of the engine, includes a downstream air-fuel ratio sensor (oxygen concentration cell type oxygen concentration sensor) disposed at a position downstream of the catalyst, and air-fuel ratio control means for controlling, based on an output value of the downstream air-fuel ratio sensor, an air-fuel ratio of a mixture supplied to the engine so as to change an air-fuel ratio of a catalyst inflow gas. Further, the air-fuel ratio control means controls the air-fuel ratio of the mixture supplied to the engine.
摘要翻译： 应用于具有设置在发动机的排气通路中的催化剂的内燃机的空燃比控制装置包括下游空燃比传感器（氧浓度电池型氧浓度传感器），位于下游的位置 催化剂和空燃比控制装置，用于基于下游空燃比传感器的输出值控制供给发动机的混合物的空燃比，以改变催化剂的空燃比 流入气体。 此外，空燃比控制装置控制供给到发动机的混合物的空燃比。
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公开(公告)号：US20130231845A1
公开(公告)日：2013-09-05
申请号：US13821795
申请日：2010-09-09
IPC分类号： F02D41/02
CPC分类号： F02D41/0235 , F02D41/1441 , F02D41/1454 , F02D41/1475 , F02D41/2441 , F02D41/2454
摘要： An air-fuel ratio control apparatus of the present invention comprises an inverse direction spike introducing section and an inverse direction spike interval setting section. The inverse direction spike introducing section introduces, while an air-fuel ratio correction required by an output of a downstream air-fuel ratio sensor is being carried out, an inverse direction spike which is an air-fuel ratio spike to temporarily change an air-fuel ratio of an exhaust gas toward a direction opposite to a direction of the air-fuel ratio correction with respect to a target control air-fuel ratio. The inverse direction spike interval setting section sets, based on an operating state of an internal combustion engine system, an inverse direction spike interval which is an interval between two of the inverse direction spikes next to each other in time.
摘要翻译： 本发明的空燃比控制装置包括反方向尖峰引入部和逆方向尖峰间隔设定部。 逆向尖峰引入部引入在进行下游空燃比传感器的输出所要求的空燃比校正的同时进行作为空燃比尖峰的反方向尖峰， 相对于目标控制空燃比，排气朝与空燃比校正方向相反的方向的燃料比。 逆方向尖峰间隔设定部基于内燃机系统的运转状态，设定作为时间上相邻的两个逆方向前后的间隔的反方向时间间隔。
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公开(公告)号：US08266898B2
公开(公告)日：2012-09-18
申请号：US12674833
申请日：2008-09-18
CPC分类号： F02D41/029 , F02D41/123 , F02D41/22 , F02D2200/0804 , F02D2200/0812
摘要： An internal combustion engine is provided that performs stoichiometric burn operation under control for providing a stoichiometric air-fuel ratio as basic control for an air-fuel ratio. A particulate filter (PM filter) is provided in an exhaust passage of the engine to trap particulate matter PM contained in exhaust gas. If it is judged that the PM filter will have excessively elevated temperature, fuel cut is prohibited during deceleration. Otherwise, before the prohibition of the fuel cut, the air-fuel ratio of exhaust gas is controlled so that the atmosphere of the PM filter is brought into an atmosphere slightly leaner than the stoichiometric air-fuel ratio.
摘要翻译： 提供一种内燃机，其在控制下进行化学计量燃烧操作，以提供理论空燃比作为空燃比的基本控制。 在发动机的排气通道中设置有微粒过滤器（PM过滤器），以捕集废气中所含的颗粒物质PM。 如果判断为PM过滤器的温度过高，减速时禁止燃油切断。 否则，在禁止燃料切断之前，控制废气的空燃比，使得PM过滤器的气氛进入比理论空燃比略微稀释的气氛中。
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