公开(公告)号：US20070250230A1

公开(公告)日：2007-10-25

申请号：US11767654

申请日：2007-06-25

申请人： Yoichi IIHOSHI ,  Shin YAMAUCHI ,  Toshio HORI ,  Yoshikuni KURASHIMA

发明人： Yoichi IIHOSHI ,  Shin YAMAUCHI ,  Toshio HORI ,  Yoshikuni KURASHIMA

IPC分类号： F01N11/00

CPC分类号： G01N27/4175 ,  F02D41/1456 ,  F02D41/1495

摘要： In a diagnosis apparatus for an internal combustion engine which determines the abnormality of a linear A/F sensor which is disposed on the upstream side of a catalyst of the engine and detects the A/F of exhaust gas, the apparatus includes a response/gain deterioration detection unit that separately detects the response deterioration in which the response of the linear A/F sensor is delayed and the gain deterioration in which the detection sensitivity of the linear A/F sensor is abnormal.

摘要翻译： 在用于确定设置在发动机的催化剂的上游侧并检测排气的A / F的线性A / F传感器的异常的内燃机的诊断装置中，该装置包括响应/增益 劣化检测单元分别检测线性A / F传感器的响应延迟的响应恶化和线性A / F传感器的检测灵敏度异常的增益劣化。

公开(公告)号：US20090266054A1

公开(公告)日：2009-10-29

申请号：US12481607

申请日：2009-06-10

申请人： Yoichi IIHOSHI ,  Shin YAMAUCHI ,  Toshio HORI ,  Yoshikuni KURASHIMA

发明人： Yoichi IIHOSHI ,  Shin YAMAUCHI ,  Toshio HORI ,  Yoshikuni KURASHIMA

IPC分类号： F01N11/00 ,  F01N9/00 ,  F01N3/10

CPC分类号： F01N11/007 ,  F01N3/0864 ,  F01N2560/025 ,  F01N2560/14 ,  F02D41/0295 ,  F02D41/1441 ,  F02D41/18 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A control apparatus for an internal combustion engine has an oxygen storage volume computing unit for computing an oxygen storage volume of a catalyst by using a real air/fuel ratio detected by an air/fuel ratio sensor installed on the upstream side of a catalyst, a center air/fuel ratio representing a stoichiometric air/fuel ratio and an estimated air flow volume or detecting a flow rate of air flowing into the catalyst. A center air/fuel ratio correcting unit for correcting a center air/fuel ratio based on output of a rear air/fuel ratio sensor provided on the downstream side of the catalyst, and an oxygen storage volume computed by an oxygen storage volume computing unit, and the oxygen storage volume computing unit computes an oxygen storage volume by using a center air/fuel ratio corrected by the center air/fuel ratio correcting unit.

摘要翻译： 一种用于内燃机的控制装置，具有一个氧气存储量计算单元，用于通过使用安装在催化剂上游侧的空气/燃料比传感器检测到的实际空气/燃料比来计算催化剂的氧气存储容积， 中心空气/燃料比表示化学计量空气/燃料比和估计的空气流量或检测流入催化剂的空气的流量。 一种中央空燃比校正单元，用于基于设置在催化剂下游侧的后空/燃比传感器的输出和由储氧量计算单元计算的氧储存量来校正中心空燃比， 并且氧气存储量计算单元通过使用由中央空燃比校正单元校正的中心空燃比来计算氧气存储量。

公开(公告)号：US20070186914A1

公开(公告)日：2007-08-16

申请号：US11738955

申请日：2007-04-23

申请人： Shinji NAKAGAWA ,  Youichi IIHOSHI ,  Yoshikuni KURASHIMA ,  Toshio HORI

发明人： Shinji NAKAGAWA ,  Youichi IIHOSHI ,  Yoshikuni KURASHIMA ,  Toshio HORI

IPC分类号： F02D41/14 ,  F02D11/10

CPC分类号： F02D41/1495 ,  F02D41/008 ,  F02D41/1454 ,  F02D41/1456 ,  F02D2041/1409 ,  F02D2041/1422 ,  F02D2041/288

摘要： The invention provides an engine controller, which can determine a deterioration mode (gain deterioration or response deterioration) of an air/fuel (A/F) ratio sensor, can detect a degree of the deterioration with high accuracy, and can optimize A/F ratio feedback control in accordance with the diagnosis result. The controller includes a unit for computing frequency response characteristics in a range from an A/F ratio adjusting unit to the A/F ratio sensor, and it diagnoses the A/F ratio sensor based on a gain characteristic and a response characteristic given by the computed frequency response characteristics. In accordance with the diagnosis result, parameters (P- and I-component gains) used in A/F ratio feedback control (PI control) are optimized.

摘要翻译： 本发明提供一种可以确定空气/燃料（A / F）比率传感器的劣化模式（增益劣化或响应劣化）的发动机控制器能够以高精度检测劣化程度，并且可以优化A / F 比例反馈控制根据诊断结果。 该控制器包括用于计算从A / F比调整单元到A / F比传感器的范围内的频率响应特性的单元，并且基于增益特性和由A / F比传感器给出的响应特性来诊断A / F比传感器 计算频率响应特性。 根据诊断结果，优化了A / F比反馈控制（PI控制）中使用的参数（P-和I-分量增益）。

公开(公告)号：US20090125212A1

公开(公告)日：2009-05-14

申请号：US12268335

申请日：2008-11-10

申请人： Yoshikuni KURASHIMA ,  Toshio Hori ,  Hiroshi Miyamoto

发明人： Yoshikuni KURASHIMA ,  Toshio Hori ,  Hiroshi Miyamoto

IPC分类号： F02D41/00

CPC分类号： F02D41/0002 ,  F02D37/02 ,  F02D41/0255 ,  F02D41/062 ,  F02D41/18 ,  F02D41/3029 ,  F02D41/3064 ,  F02D41/3836 ,  F02D41/402 ,  F02D41/405 ,  F02D2200/0402 ,  F02D2200/0404 ,  F02D2250/41 ,  Y02T10/42 ,  Y02T10/44

摘要： An object of the present invention is to provide an engine control apparatus that can perform combustion pattern changeover at a time point where fuel injection can be performed plural times in an engine operating state where fuel injection is performed plural times in each combustion.Each cylinder of the engine having an injector 112 performs fuel injection from the injector a predetermined number of times for each cylinder combustion. The control unit 200 controls fuel injection from the injector and the ignition timing from a spark plug. The control unit 200, upon combustion mode changeover from the first combustion mode in which fuel injection is performed at least once for each cylinder combustion to the second combustion mode in which fuel injection is performed a greater number of times with a larger intake air volume than the first combustion mode, performs the steps of changing in the first combustion mode a target intake air volume required in the second combustion mode; retarding the ignition timing; changing the second combustion mode; and further retarding the ignition timing.

摘要翻译： 本发明的目的是提供一种发动机控制装置，其能够在每次燃烧中进行多次燃料喷射的发动机运转状态的多次燃料喷射的时间点进行燃烧模式切换。 具有喷射器112的发动机的每个气缸对于每个气缸燃烧，对喷射器执行预定次数的燃料喷射。 控制单元200控制来自喷射器的燃料喷射和来自火花塞的点火正时。 控制单元200在从燃烧模式切换到第一燃烧模式时，其中对于每个气缸燃烧进行至少一次的燃料喷射到进行燃料喷射的第二燃烧模式，具有较大的进气量的更多次数 第一燃烧模式执行在第一燃烧模式中改变在第二燃烧模式中所需的目标进气量的步骤; 延迟点火正时; 改变第二种燃烧模式; 并进一步延迟点火正时。