公开(公告)号：US20050262831A1

公开(公告)日：2005-12-01

申请号：US11005009

申请日：2004-12-07

申请人： Tomohisa Shouda ,  Keiichi Enoki

发明人： Tomohisa Shouda ,  Keiichi Enoki

IPC分类号： F02D45/00 ,  F01N3/00 ,  F01N3/24 ,  F02D41/02 ,  F02D41/04 ,  F02D41/12 ,  F02D41/14

CPC分类号： F02D41/126 ,  F01N2570/16 ,  F02D41/0295 ,  F02D2200/0814 ,  Y02T10/22

摘要： A control apparatus for the internal combustion engine includes a fuel cut post-return fuel increasing correction unit for performing a fuel increasing correction during a specified period when a fuel supply stop state by an fuel cut control unit is returned to a fuel supply state, and a fuel increasing correction stop unit which compares an integrated value of an amount of air flowing into a three-way catalyst during a period of the fuel supply stop with an integrated value of an amount of air flowing into the three-way catalyst during the fuel increasing correction after a fuel supply return, and stops the fuel increasing correction of the fuel cut post-return fuel increasing correction unit when a comparison value reaches a specified value.

摘要翻译： 用于内燃机的控制装置包括燃料切断返回后燃料增加校正单元，用于在通过燃料切断控制单元的燃料供给停止状态返回到燃料供给状态的特定时段期间执行燃料增加校正，以及 燃料增加校正停止单元，其比较在燃料供给停止期间流入三元催化剂的空气量的积分值与在燃料中流入三元催化剂的空气量的积分值 在燃料供给返回之后增加校正，并且当比较值达到指定值时停止燃料切断返回后燃料增加校正单元的燃料增加校正。

公开(公告)号：US07273040B2

公开(公告)日：2007-09-25

申请号：US11326334

申请日：2006-01-06

申请人： Tomohisa Shouda ,  Keiichi Enoki ,  Hideaki Tani

发明人： Tomohisa Shouda ,  Keiichi Enoki ,  Hideaki Tani

IPC分类号： F02D41/06

CPC分类号： F02D41/062 ,  F02D41/1454 ,  F02D41/148 ,  F02D41/1482 ,  F02D2200/602

摘要： At the time of start-up, fuel supply is made excessive. When air-fuel ratio feedback control is started while the fuel is excessive, the control is put into a state of overshoot or hunting, and it takes a long time to converge to the target air-fuel ratio. In an air-fuel ratio control apparatus, a selection switch is provided at the output of an integration calculation circuit to perform air-fuel ratio feedback control, and immediately after start-up of the engine, an upper/lower limit clip value for use immediately after start-up, which is smaller than a normal one, is selected to perform the air-fuel ratio feedback control. Even if the air-fuel ratio feedback control is started immediately after the start-up in a state where the fuel is excessive, the actual air-fuel ratio does not overshoot with respect to the target air-fuel ratio and is quickly converged to the target air-fuel ratio.

公开(公告)号：US07243487B2

公开(公告)日：2007-07-17

申请号：US11005009

申请日：2004-12-07

申请人： Tomohisa Shouda ,  Keiichi Enoki

发明人： Tomohisa Shouda ,  Keiichi Enoki

IPC分类号： F01N3/00

CPC分类号： F02D41/126 ,  F01N2570/16 ,  F02D41/0295 ,  F02D2200/0814 ,  Y02T10/22

摘要： A control apparatus for the internal combustion engine includes a fuel cut post-return fuel increasing correction unit for performing a fuel increasing correction during a specified period when a fuel supply stop state by an fuel cut control unit is returned to a fuel supply state, and a fuel increasing correction stop unit which compares an integrated value of an amount of air flowing into a three-way catalyst during a period of the fuel supply stop with an integrated value of an amount of air flowing into the three-way catalyst during the fuel increasing correction after a fuel supply return, and stops the fuel increasing correction of the fuel cut post-return fuel increasing correction unit when a comparison value reaches a specified value.

摘要翻译： 用于内燃机的控制装置包括燃料切断返回后燃料增加校正单元，用于在通过燃料切断控制单元的燃料供给停止状态返回到燃料供给状态的特定时段期间执行燃料增加校正，以及 燃料增加校正停止单元，其比较在燃料供给停止期间流入三元催化剂的空气量的积分值与在燃料中流入三元催化剂的空气量的积分值 在燃料供给返回之后增加校正，并且当比较值达到指定值时停止燃料切断返回后燃料增加校正单元的燃料增加校正。

公开(公告)号：US20070023021A1

公开(公告)日：2007-02-01

申请号：US11326334

申请日：2006-01-06

申请人： Tomohisa Shouda ,  Keiichi Enoki ,  Hideaki Tani

发明人： Tomohisa Shouda ,  Keiichi Enoki ,  Hideaki Tani

IPC分类号： F02D41/14

CPC分类号： F02D41/062 ,  F02D41/1454 ,  F02D41/148 ,  F02D41/1482 ,  F02D2200/602

摘要： At the time of start-up, fuel supply is made excessive. When air-fuel ratio feedback control is started while the fuel is excessive, the control is put into a state of overshoot or hunting, and it takes a long time to converge to the target air-fuel ratio. In an air-fuel ratio control apparatus, a selection switch is provided at the output of an integration calculation circuit to perform air-fuel ratio feedback control, and immediately after start-up of the engine, an upper/lower limit clip value for use immediately after start-up, which is smaller than a normal one, is selected to perform the air-fuel ratio feedback control. Even if the air-fuel ratio feedback control is started immediately after the start-up in a state where the fuel is excessive, the actual air-fuel ratio does not overshoot with respect to the target air-fuel ratio and is quickly converged to the target air-fuel ratio.

摘要翻译： 在启动时，供油过量。 当燃料过量时开始空燃比反馈控制时，控制进入过冲或起搏状态，并且需要很长时间才能达到目标空燃比。 在空燃比控制装置中，在积分计算电路的输出处设置选择开关，以执行空燃比反馈控制，并且在发动机启动之后立即使用上限/下限剪切值 选择小于正常启动后的起动后的空燃比反馈控制。 即使在燃料过大的状态下，在起动后立即开始空燃比反馈控制，实际空燃比相对于目标空燃比不会超调，并且迅速收敛于 目标空燃比。