公开(公告)号：US20110219861A1

公开(公告)日：2011-09-15

申请号：US13044021

申请日：2011-03-09

申请人： Ryozo KAYAMA ,  Toshihiko Tanaka ,  Masahiro Kubo

发明人： Ryozo KAYAMA ,  Toshihiko Tanaka ,  Masahiro Kubo

IPC分类号： G01M15/10

CPC分类号： F02D41/22 ,  F02D41/0007 ,  F02D41/0085 ,  Y02T10/40

摘要： When a wastegate valve, which opens and closes an exhaust bypass passage bypassing an exhaust turbine, is open, exhaust gases of respective cylinders bypass the exhaust turbine and pass a sensing point of an air-fuel ratio sensor downstream of the exhaust turbine. Accordingly, the exhaust gases of the respective cylinders can be avoided from being mixed by the exhaust turbine, so an influence of an inter-cylinder variation in an air-fuel ratio due to an inter-cylinder imbalance abnormality becomes apt to appear in an output waveform of the air-fuel ratio sensor. Therefore, existence or nonexistence of the inter-cylinder imbalance abnormality is determined based on the output of the air-fuel ratio sensor when the wastegate valve is open. Eventually, the existence or nonexistence of the inter-cylinder imbalance abnormality can be determined accurately, thereby improving detection accuracy of the inter-cylinder imbalance abnormality.

摘要翻译： 当打开和关闭旁路排气涡轮机的排气旁通通道的废气门打开时，各个气缸的废气旁路排气涡轮并将排气涡轮下游的空燃比传感器的感测点通过。 因此，可以避免各气缸的排气被排气涡轮混合，因此，由于气缸内不平衡异常引起的气缸内的变化对空燃比的影响容易出现在输出 空燃比传感器的波形。 因此，当排气门阀打开时，基于空燃比传感器的输出来确定气缸间不平衡异常的存在或不存在。 最终，可以精确地确定气缸内不平衡异常的存在或不存在，从而提高气缸间不平衡异常的检测精度。

公开(公告)号：US20050235961A1

公开(公告)日：2005-10-27

申请号：US11113325

申请日：2005-04-25

申请人： Ryozo Kayama ,  Hideki Suzuki ,  Tetsuharu Matsuo ,  Yukio Tomiita

发明人： Ryozo Kayama ,  Hideki Suzuki ,  Tetsuharu Matsuo ,  Yukio Tomiita

IPC分类号： F02M51/06 ,  F02D41/04 ,  F02D41/06 ,  F02M35/10 ,  F02M53/04 ,  F02M61/14 ,  F02M61/18 ,  F02M69/04 ,  F02B31/00

CPC分类号： F02M61/1806 ,  F02B2275/16 ,  F02M35/10216 ,  F02M35/1085 ,  F02M61/145 ,  F02M61/1826 ,  F02M61/1853 ,  F02M69/044 ,  Y02T10/123

摘要： A fuel injector for an internal combustion engine which has a spray hole designed geometrically to produce a spray of fuel so that substantially 70% or more of an amount of the spray hits a preselected area of a head of an intake valve of the engine when the intake valve is closed. The preselected area is one of a first and a second area of the intake valve head which are defined by a reference boundary line extending through a base end of a stem of the intake valve. The preselected area is the first area closer to an intake manifold, while the second area is closer to an exhaust valve. This avoids rich misfire and reduces HC emissions from the engine regardless of the intake valve is in a closed state or in an open state.

摘要翻译： 一种用于内燃机的燃料喷射器，其具有几何设计的喷射孔，以产生燃料喷雾，使得当喷射量大致为70％或更多时喷射量与发动机的进气门的头部的预选区域相匹配 进气阀关闭。 预选区域是进气门头的第一和第二区域之一，其由延伸穿过进气门的杆的基端的参考边界线限定。 预选区域是更靠近进气歧管的第一区域，而第二区域更靠近排气门。 这避免了大量的失火并且减少了来自发动机的HC排放物，而不管进气门处于关闭状态或处于打开状态。

公开(公告)号：US06857415B2

公开(公告)日：2005-02-22

申请号：US10851665

申请日：2004-05-24

申请人： Ryozo Kayama ,  Toshiki Annoura ,  Koichi Hoshi ,  Takaaki Itoh

发明人： Ryozo Kayama ,  Toshiki Annoura ,  Koichi Hoshi ,  Takaaki Itoh

IPC分类号： B60T17/00 ,  B60T13/52 ,  F02D29/02 ,  F02D41/04 ,  F02D41/06 ,  F02D41/18 ,  F02N11/10 ,  F02N19/00 ,  F02D13/00

CPC分类号： B60T13/52 ,  F02D41/062 ,  F02D41/182 ,  F02N19/00

摘要： A bypass passage for bypassing a check valve is connected with a vacuum introducing passage of a brake booster. The bypass passage is provided with a switching valve. Just before the start of an engine, the switching valve temporarily opens the bypass passage whereby to equalize a remaining pressure of the brake booster substantially becomes equal to an atmospheric level. As a result, the pressure in the brake booster at the starting time is set to substantially the atmospheric level so that the airflow to be sucked from the brake booster into the intake pipe at the starting time is made substantially contact every times. Thus, the fuel injection rate can be set considering the airflow to be sucked from the brake booster into the intake pipe at the starting time, even if that airflow cannot be detected.

摘要翻译： 用于旁路止回阀的旁路通路与制动助力器的真空引入通道连接。 旁通通道设有切换阀。 在发动机起动之前，切换阀暂时打开旁路通道，从而使制动助力器的剩余压力基本上等于大气压。 因此，制动助力器在起动时的压力被设定为大体上的大气压，使得在起动时从制动助力器吸入进气管的气流大致接触。 因此，即使不能检测到气流，也可以考虑在起动时从制动助力器吸入进气管的气流来设定燃料喷射率。

公开(公告)号：US07195000B2

公开(公告)日：2007-03-27

申请号：US11113325

申请日：2005-04-25

申请人： Ryozo Kayama ,  Hideki Suzuki ,  Tetsuharu Matsuo ,  Yukio Tomiita

发明人： Ryozo Kayama ,  Hideki Suzuki ,  Tetsuharu Matsuo ,  Yukio Tomiita

IPC分类号： F02M61/14 ,  G06F17/00

CPC分类号： F02M61/1806 ,  F02B2275/16 ,  F02M35/10216 ,  F02M35/1085 ,  F02M61/145 ,  F02M61/1826 ,  F02M61/1853 ,  F02M69/044 ,  Y02T10/123

摘要： A fuel injector for an internal combustion engine which has a spray hole designed geometrically to produce a spray of fuel so that substantially 70% or more of an amount of the spray hits a preselected area of a head of an intake valve of the engine when the intake valve is closed. The preselected area is one of a first and a second area of the intake valve head which are defined by a reference boundary line extending through a base end of a stem of the intake valve. The preselected area is the first area closer to an intake manifold, while the second area is closer to an exhaust valve. This avoids rich misfire and reduces HC emissions from the engine regardless of the intake valve is in a closed state or in an open state.

摘要翻译： 一种用于内燃机的燃料喷射器，其具有几何设计的喷射孔，以产生燃料喷雾，使得当喷射量大致为70％或更多时喷射量与发动机的进气门的头部的预选区域相匹配 进气阀关闭。 预选区域是进气门头的第一和第二区域之一，其由延伸穿过进气门的杆的基端的参考边界线限定。 预选区域是更靠近进气歧管的第一区域，而第二区域更靠近排气门。 这避免了大量的失火并且减少了来自发动机的HC排放物，而不管进气阀处于关闭状态或处于打开状态。

公开(公告)号：US08051641B2

公开(公告)日：2011-11-08

申请号：US11991740

申请日：2006-10-13

申请人： Junichi Kako ,  Shinichi Soejima ,  Ryozo Kayama

发明人： Junichi Kako ,  Shinichi Soejima ,  Ryozo Kayama

IPC分类号： F01N3/00

CPC分类号： B01D53/9495 ,  F01N11/002 ,  F01N11/005 ,  F01N2560/06 ,  F02D41/0235 ,  F02D41/1446 ,  F02D2200/0804 ,  Y02T10/47

摘要： The present invention has an object to provide an exhaust gas purifying apparatus for an internal combustion engine capable of obtaining accurate temperature information relating to a catalyst placed in an exhaust passage of the internal combustion engine. The degree of influence emthc of a catalyst inlet gas temperature and catalyst rear end temperature ethuf[end] is calculated (Step 102). An estimated value ethco of an outlet gas temperature is calculated by weighted averaging the inlet gas temperature and the catalyst rear end temperature ethuf[end] considering the degree of influence emthc (Step 104). A temperature correction coefficient ekthuf[x] for each region of the catalyst is calculated as a function f(emthc) of the degree of influence emthc (Step 108). A deviation between the outlet gas temperature estimated value ethco and a measured value of the outlet gas temperature is multiplied by the temperature correction coefficient ekthuf[x] to calculate an estimated value correction amount ecthuf[x] (Step 110). The estimated value correction amount ecthuf[x] is added to a catalyst temperature estimated value (Step 114).

摘要翻译： 本发明的目的是提供一种内燃机的排气净化装置，其能够获得与内燃机的排气通道中的催化剂有关的精确的温度信息。 计算催化剂入口气体温度和催化剂后端温度流速的影响程度（结束）（步骤102）。 考虑到影响程度（步骤104），对入口气体温度和催化剂后端温度等级进行加权平均，计算出口气体温度的估计值。 计算催化剂的每个区域的温度校正系数ekthuf [x]作为影响程度的函数f（emthc）（步骤108）。 出口气体温度估计值ethco与出口气体温度的测量值之间的偏差乘以温度校正系数ekthuf [x]，以计算估计值校正量ecthuf [x]（步骤110）。 将估计值校正量ecthuf [x]加到催化剂温度估计值（步骤114）。

公开(公告)号：US20100047133A1

公开(公告)日：2010-02-25

申请号：US11991740

申请日：2006-10-13

申请人： Junichi Kako ,  Shinichi Soejima ,  Ryozo Kayama

发明人： Junichi Kako ,  Shinichi Soejima ,  Ryozo Kayama

IPC分类号： B01D53/94 ,  F01N3/20 ,  F02D45/00

CPC分类号： B01D53/9495 ,  F01N11/002 ,  F01N11/005 ,  F01N2560/06 ,  F02D41/0235 ,  F02D41/1446 ,  F02D2200/0804 ,  Y02T10/47

摘要： The present invention has an object to provide an exhaust gas purifying apparatus for an internal combustion engine capable of obtaining accurate temperature information relating to a catalyst placed in an exhaust passage of the internal combustion engine. The degree of influence emthc of a catalyst inlet gas temperature and catalyst rear end temperature ethuf[end] is calculated (Step 102). An estimated value ethco of an outlet gas temperature is calculated by weighted averaging the inlet gas temperature and the catalyst rear end temperature ethuf[end] considering the degree of influence emthc (Step 104). A temperature correction coefficient ekthuf[x] for each region of the catalyst is calculated as a function f(emthc) of the degree of influence emthc (Step 108). A deviation between the outlet gas temperature estimated value ethco and a measured value of the outlet gas temperature is multiplied by the temperature correction coefficient ekthuf[x] to calculate an estimated value correction amount ecthuf[x] (Step 110). The estimated value correction amount ecthuf[x] is added to a catalyst temperature estimated value (Step 114).

摘要翻译： 本发明的目的是提供一种内燃机的排气净化装置，其能够获得与内燃机的排气通道中的催化剂有关的精确的温度信息。 计算催化剂入口气体温度和催化剂后端温度流速的影响程度（结束）（步骤102）。 考虑到影响程度（步骤104），对入口气体温度和催化剂后端温度等级进行加权平均，计算出口气体温度的估计值。 计算催化剂的每个区域的温度校正系数ekthuf [x]作为影响程度的函数f（emthc）（步骤108）。 出口气体温度估计值ethco与出口气体温度的测量值之间的偏差乘以温度校正系数ekthuf [x]，以计算估计值校正量ecthuf [x]（步骤110）。 将估计值校正量ecthuf [x]加到催化剂温度估计值（步骤114）。

公开(公告)号：US08413497B2

公开(公告)日：2013-04-09

申请号：US13044021

申请日：2011-03-09

申请人： Ryozo Kayama ,  Toshihiko Tanaka ,  Masahiro Kubo

发明人： Ryozo Kayama ,  Toshihiko Tanaka ,  Masahiro Kubo

IPC分类号： G01M15/10

CPC分类号： F02D41/22 ,  F02D41/0007 ,  F02D41/0085 ,  Y02T10/40

摘要： When a wastegate valve, which opens and closes an exhaust bypass passage bypassing an exhaust turbine, is open, exhaust gases of respective cylinders bypass the exhaust turbine and pass a sensing point of an air-fuel ratio sensor downstream of the exhaust turbine. Accordingly, the exhaust gases of the respective cylinders can be avoided from being mixed by the exhaust turbine, so an influence of an inter-cylinder variation in an air-fuel ratio due to an inter-cylinder imbalance abnormality becomes apt to appear in an output waveform of the air-fuel ratio sensor. Therefore, existence or nonexistence of the inter-cylinder imbalance abnormality is determined based on the output of the air-fuel ratio sensor when the wastegate valve is open. Eventually, the existence or nonexistence of the inter-cylinder imbalance abnormality can be determined accurately, thereby improving detection accuracy of the inter-cylinder imbalance abnormality.

摘要翻译： 当打开和关闭旁路排气涡轮机的排气旁通通道的废气门打开时，各个气缸的废气旁路排气涡轮并将排气涡轮下游的空燃比传感器的感测点通过。 因此，可以避免各气缸的排气被排气涡轮混合，因此，由于气缸内不平衡异常引起的气缸内的变化对空燃比的影响容易出现在输出 空燃比传感器的波形。 因此，当排气门阀打开时，基于空燃比传感器的输出来确定气缸间不平衡异常的存在或不存在。 最终，可以精确地确定气缸内不平衡异常的存在或不存在，从而提高气缸间不平衡异常的检测精度。