-
公开(公告)号：US20080236548A1
公开(公告)日：2008-10-02
申请号：US11969460
申请日：2008-01-04
IPC分类号： F02M51/00
CPC分类号： F02D41/40 , F02D35/023 , F02D41/0025 , F02D41/062 , F02D41/221 , F02D41/3836 , F02D2041/224 , F02D2041/225 , F02D2200/0602 , F02D2200/0604 , F02D2200/0611 , F02D2250/04 , F02M63/0225 , Y02T10/44
摘要： The present invention reduces exhaust emissions at startup, provides improved fuel pressure control performance in a low-load region, and detects high-pressure fuel system abnormalities. Disclosed is a high-pressure fuel system control device which includes a high-pressure pump for pressurizing fuel and discharging the pressurized fuel to a fuel rail, an injector for injecting the fuel stored in the fuel rail, and a fuel pressure sensor for measuring the pressure of the fuel stored in the fuel rail, and controls the high-pressure pump and the injector in accordance with an output generated from the fuel pressure sensor. The high-pressure fuel system control device includes a homo-elasticity coefficient estimation section for estimating a homo-elasticity coefficient of fuel in accordance with a pressure change which occurs when a fuel discharge amount of the high-pressure pump is not smaller than a predetermined value; a fuel pressure estimation section for estimating fuel pressure within the fuel rail in accordance with the homo-elasticity coefficient and control target values for the high-pressure pump and the injector; and a fuel control section for correcting an injection pulse of the injector in accordance with the fuel pressure estimated by the fuel pressure estimation section.
摘要翻译： 本发明减少了启动时的排气排放，在低负荷区域提供了改进的燃料压力控制性能，并检测出高压燃油系统异常。 公开了一种高压燃料系统控制装置，其包括用于对燃料进行加压并将加压燃料排放到燃料轨的高压泵，用于喷射存储在燃料轨中的燃料的喷射器和用于测量燃料压力的燃料压力传感器 存储在燃料轨道中的燃料的压力，并且根据从燃料压力传感器产生的输出来控制高压泵和喷射器。 高压燃料系统控制装置包括均弹弹性系数估计部，其根据当高压泵的燃料喷射量不小于预定值时发生的压力变化来估计燃料的均匀弹性系数 值; 燃料压力估计部，用于根据高压泵和喷射器的均弹性系数和控制目标值来估计燃料轨道内的燃料压力; 以及燃料控制部，其根据由燃料压力推定部估计出的燃料压力来校正喷射器的喷射脉冲。
-
公开(公告)号：US20090266054A1
公开(公告)日：2009-10-29
申请号：US12481607
申请日：2009-06-10
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：US20090265086A1
公开(公告)日：2009-10-22
申请号：US12425033
申请日：2009-04-16
CPC分类号： F02D41/064 , F02D41/22 , F02D2200/023 , Y02T10/40
摘要： A diagnosis apparatus for an internal combustion engine equipped with a cold start emission reduction strategy unit, includes: a temperature measuring unit for detecting a temperature of coolant of the internal combustion engine; a temperature estimating unit for calculating an estimated temperature of the coolant in accordance with a running state of the internal combustion engine; and a cold start emission reduction strategy abnormality judging unit for judging abnormality of the cold start emission reduction strategy unit in accordance with the temperature detected with the coolant temperature measuring means and the estimated temperature.
摘要翻译： 一种配备有冷启动排放减少策略单元的内燃机的诊断装置，包括：温度测量单元，用于检测内燃机的冷却剂的温度; 温度估计单元，用于根据内燃机的运行状态计算冷却剂的估计温度; 以及冷启动排放减少策略异常判定单元，用于根据由冷却剂温度测量装置检测到的温度和估计温度来判断冷启动排放减少策略单元的异常。
-
公开(公告)号：US20070250230A1
公开(公告)日：2007-10-25
申请号：US11767654
申请日：2007-06-25
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：US20090248281A1
公开(公告)日：2009-10-01
申请号：US12481608
申请日：2009-06-10
IPC分类号： F02D41/30
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.
-
公开(公告)号：US20110179774A1
公开(公告)日：2011-07-28
申请号：US13010302
申请日：2011-01-20
申请人： Yoichi IIHOSHI , Ryusei Miura , Eisaku Fukuchi , Akihito Numata
发明人： Yoichi IIHOSHI , Ryusei Miura , Eisaku Fukuchi , Akihito Numata
IPC分类号： F01N11/00
CPC分类号： F02D41/0085 , F02D41/1441 , F02D41/1454
摘要： To prevent the deterioration of exhaust emissions of an internal combustion engine due to air-fuel ratio variation among multiple cylinders, and to identify an abnormal cylinder during an abnormality of cylinder air-fuel ratio variation. An control apparatus of an internal combustion engine comprising upstream air-fuel ratio detection means for detecting upstream air-fuel ratio of the catalyst that purifies exhaust emissions discharged from multiple cylinders, and configured to control air-fuel ratio of the multiple cylinders based on the upstream air-fuel ratio, wherein the air-fuel ratio variation among the multiple cylinders is increased and the upstream air-fuel ratio is controlled to become rich. Further, an abnormality of the air-fuel ratio variation among the multiple cylinders and an abnormal cylinder are identified based on an output of an air-fuel ratio sensor in downstream of the catalyst when the air-fuel ratio variation is increased, or an estimated value of an air-fuel ratio (central air-fuel ratio) at which the purification efficiency of the catalyst becomes optimal.
摘要翻译： 为了防止由于多个气缸之间的空燃比变化引起的内燃机的废气排放的恶化，并且在气缸空燃比变化的异常期间识别异常气缸。 一种内燃机的控制装置，包括上游空燃比检测装置，用于检测催化剂的上游空燃比，其净化从多个气缸排出的废气排放，并且被配置为基于所述多个气缸来控制多个气缸的空燃比 上游空燃比，其中多个气缸之间的空燃比变化增加，并且上游空燃比被控制为变浓。 此外，当空燃比变化增加时，基于催化剂下游的空燃比传感器的输出来识别多个气缸和异常气缸之间的空燃比变化的异常，或估计 催化剂的净化效率最优的空燃比（中央空燃比）的值。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.027 秒)
