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公开(公告)号：US20120245824A1
公开(公告)日：2012-09-27
申请号：US13513211
申请日：2010-12-14
IPC分类号： F02D41/30
CPC分类号： F02D41/3845 , F02D41/1454 , F02D41/18 , F02D41/22 , F02D2041/224 , F02D2250/14 , F02D2250/31
摘要： An anomaly in a high-pressure fuel system of an internal combustion engine is diagnosed early on and with high precision, and, further, the anomaly site is identified. With respect to a diagnostic device for a direct injection internal combustion engine, there is provided: an injection correction amount computation means (302) that computes an injection correction amount so as to bring a detected air-fuel ratio to a target air-fuel ratio; a fuel injection valve control means (202) that controls the fuel injection valves with the fuel injection amount corrected based on the injection correction amount; a discharge correction amount computation means (305) that computes a discharge correction amount so as to bring a detected fuel pressure to a target fuel pressure; a fuel pump control means (203) that controls the fuel pump with the discharge amount corrected based on the discharge correction amount; a fuel pressure value shifting means (204) that shifts the value of the detected fuel pressure if the injection correction amount deviates from a predetermined range and until the injection correction amount converges to a given amount within the predetermined range; and an anomaly determination means (306) that determines which of the fuel pump, the fuel injection valves, and the fuel pressure sensor has an anomaly based on the discharge correction amounts before the fuel pressure values shift starts and after the fuel pressure value shift ends, and on the injection correction amount before the fuel pressure value shift starts.
摘要翻译： 早期就以高精度诊断出内燃机的高压燃料系统的异常现象，进一步确定异常现场。 关于直接喷射内燃机的诊断装置，提供：喷射校正量计算装置（302），其计算喷射校正量，以使检测到的空燃比为目标空燃比 ; 燃料喷射阀控制装置（202），其基于喷射校正量校正燃料喷射量来控制燃料喷射阀; 排出校正量计算装置（305），其计算排出校正量以使检测到的燃料压力达到目标燃料压力; 燃料泵控制装置（203），其以基于排出校正量校正的排出量来控制燃料泵; 如果喷射校正量偏离预定范围并且直到喷射校正量收敛到预定范围内的给定量，则将检测到的燃料压力的值偏移的燃料压力值移动装置（204） 以及异常判定装置（306），其基于在燃料压力值变速开始之前和燃料压力值换档结束之后的排出校正量来确定燃料泵，燃料喷射阀和燃料压力传感器中的哪一个具有异常 ，以及在燃料压力值偏移开始之前的喷射校正量。
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2.发明授权公开(公告)号：US07753032B2
公开(公告)日：2010-07-13
申请号：US12192557
申请日：2008-08-15
CPC分类号： F02D41/3845 , F02B2075/125 , F02D13/0207 , F02D13/0219 , F02D2250/31 , F02M59/102 , F02M59/366 , F02M63/028 , F02M63/0295 , Y02T10/123 , Y02T10/18
摘要： There is provided a control apparatus for a cylinder injection internal combustion engine which suppresses fuel pulsation caused by cam phase deviation and thereby prevents internal combustion engine exhaust deterioration, so that the reliability of a high-pressure fuel system using a high-pressure fuel pump is improved. The control apparatus for a cylinder injection internal combustion engine includes a high-pressure fuel pump that raises the pressure of fuel and discharges the fuel to a fuel rail, and a fuel pressure sensor that detects a pressure of fuel stored in the fuel rail. The control apparatus controls the high-pressure fuel pump based on the fuel pressure detected by the fuel pressure sensor. The control apparatus further includes a cam phase estimation means for estimating a phase of a cam shaft of the internal combustion engine which drives the high-pressure fuel pump, and based on the phase estimation value calculated by the cam phase estimation means, corrects the amount of controlling the high-pressure fuel pump.
摘要翻译： 提供了一种用于气缸喷射内燃机的控制装置，其抑制由凸轮相位偏差引起的燃料脉动，从而防止内燃机排气恶化，使得使用高压燃料泵的高压燃料系统的可靠性为 改进。 用于气缸喷射内燃机的控制装置包括提高燃料压力并将燃料排放到燃料轨道的高压燃料泵，以及检测燃料轨中存储的燃料压力的燃料压力传感器。 控制装置基于由燃料压力传感器检测到的燃料压力来控制高压燃料泵。 该控制装置还具备：凸轮相位推定装置，用于估计驱动高压燃料泵的内燃机的凸轮轴的相位，并根据由凸轮相位推定机构计算出的相位推定值， 控制高压燃油泵。
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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。
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公开(公告)号：US20080028828A1
公开(公告)日：2008-02-07
申请号：US11830130
申请日：2007-07-30
IPC分类号： G01N7/00
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1456 , F02D41/1495 , Y02T10/22
摘要： A diagnostic device and method of an engine exhaust purifying system, which perform active control of an air-fuel ratio and can make diagnosis of air-fuel ratio sensors, catalysts, etc. in the engine exhaust purifying system with high accuracy and reliability while avoiding a worsening of exhaust emissions, an increase of revolution variations, etc. The diagnostic device comprises an exhaust air-fuel ratio control unit for performing control to keep an air-fuel ratio of exhaust gas flowing into a main catalyst near a stoichiometric ratio in accordance with outputs of downstream air-fuel ratio sensors, a rich/lean switching unit for switching over an air-fuel ratio in each of the cylinder groups to be rich or lean, thereby making diagnosis of each downstream air-fuel ratio sensor, a response detecting unit for detecting a response of the downstream air-fuel ratio sensor when the rich/lean switching of the air-fuel ratio in each cylinder group is performed, and a downstream sensor deterioration determining unit for determining a deterioration of the downstream air-fuel ratio sensor based on the detected response.
摘要翻译： 一种发动机排气净化系统的诊断装置和方法，其能够主动地控制空燃比并且可以高精度和可靠地在发动机排气净化系统中对空燃比传感器，催化剂等进行诊断，同时避免 废气排放恶化，旋转变化的增加等。诊断装置包括排气空燃比控制单元，用于进行控制以使排气流入主催化剂的空燃比接近化学计量比 具有下游空燃比传感器的输出，用于切换每个气缸组中的空燃比的丰富/稀薄切换单元以富或稀，从而对每个下游空燃比传感器进行诊断，响应 检测单元，用于当执行每个气缸组中的空燃比的丰富/稀薄切换时，检测下游空燃比传感器的响应;以及下游传感器测定 确定单元，用于基于检测到的响应来确定下游空燃比传感器的劣化。
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公开(公告)号：US20060089768A1
公开(公告)日：2006-04-27
申请号：US11252892
申请日：2005-10-19
申请人： Kohei Sakurai , Nobuyasu Kanekawa , Minoru Ohsuga , Masatoshi Hoshino , Yoichi Iihoshi , Yutaka Takaku
发明人： Kohei Sakurai , Nobuyasu Kanekawa , Minoru Ohsuga , Masatoshi Hoshino , Yoichi Iihoshi , Yutaka Takaku
CPC分类号： G07C5/008 , G05B23/0267 , G07C5/0816 , G07C5/085 , G07C2205/02 , H04W24/00
摘要： The present invention provides a vehicle diagnostic system comprising an electronic control unit for controlling and monitoring vehicle equipment, a radio communication means for transmitting a vehicle diagnostic information to a telecommunication equipment located outside the vehicle or for communicating between the vehicle and the telecommunication equipment located outside the vehicle and for transmitting a communication diagnostic signal to the electronic control unit and receiving a response signal to the communication diagnostic signal, and a communication line for connecting the electronic control unit and the radio communication means wherein the response signal is utilized to determine if the communication line is properly functional.
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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.
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公开(公告)号：US20070124039A1
公开(公告)日：2007-05-31
申请号：US11698950
申请日：2007-01-29
申请人： Kohei Sakurai , Nobuyasu Kanekawa , Minoru Ohsuga , Masatoshi Hoshino , Yoichi Iihoshi , Yutaka Takaku
发明人： Kohei Sakurai , Nobuyasu Kanekawa , Minoru Ohsuga , Masatoshi Hoshino , Yoichi Iihoshi , Yutaka Takaku
CPC分类号： G07C5/008 , G05B23/0267 , G07C5/0816 , G07C5/085 , G07C2205/02 , H04W24/00
摘要： The present invention provides a vehicle diagnostic system comprising an electronic control unit for controlling and monitoring vehicle equipment, a radio communication means for transmitting a vehicle diagnostic information to a telecommunication equipment located outside the vehicle or for communicating between the vehicle and the telecommunication equipment located outside the vehicle and for transmitting a communication diagnostic signal to the electronic control unit and receiving a response signal to the communication diagnostic signal, and a communication line for connecting the electronic control unit and the radio communication means wherein the response signal is utilized to determine if the communication line is properly functional.
摘要翻译： 本发明提供了一种车辆诊断系统，包括用于控制和监测车辆设备的电子控制单元，用于将车辆诊断信息发送到位于车辆外部的电信设备或用于在车辆与位于外部的电信设备之间进行通信的无线电通信装置 车辆，并且用于将通信诊断信号发送到电子控制单元并且接收对通信诊断信号的响应信号;以及通信线路，用于连接电子控制单元和无线电通信装置，其中响应信号用于确定是否 通信线路正常运行。
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公开(公告)号：US20050262828A1
公开(公告)日：2005-12-01
申请号：US11136533
申请日：2005-05-25
IPC分类号： F02D45/00 , B01D53/94 , F01N3/20 , F01N3/24 , F01N3/28 , F02D41/04 , F02D41/14 , F02D41/36 , F01N3/00 , F01N7/00
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1456 , F02D41/1495 , Y02T10/22
摘要： A diagnostic device and method of an engine exhaust purifying system, which perform active control of an air-fuel ratio and can make diagnosis of air-fuel ratio sensors, catalysts, etc. in the engine exhaust purifying system with high accuracy and reliability while avoiding a worsening of exhaust emissions, an increase of revolution variations, etc. The diagnostic device comprises an exhaust air-fuel ratio control unit for performing control to keep an air-fuel ratio of exhaust gas flowing into a main catalyst near a stoichiometric ratio in accordance with outputs of downstream air-fuel ratio sensors, a rich/lean switching unit for switching over an air-fuel ratio in each of the cylinder groups to be rich or lean, thereby making diagnosis of each downstream air-fuel ratio sensor, a response detecting unit for detecting a response of the downstream air-fuel ratio sensor when the rich/lean switching of the air-fuel ratio in each cylinder group is performed, and a downstream sensor deterioration determining unit for determining a deterioration of the downstream air-fuel ratio sensor based on the detected response.
摘要翻译： 一种发动机排气净化系统的诊断装置和方法，其能够主动地控制空燃比并且可以高精度和可靠地在发动机排气净化系统中对空燃比传感器，催化剂等进行诊断，同时避免 废气排放恶化，旋转变化的增加等。诊断装置包括排气空燃比控制单元，用于进行控制以使排气流入主催化剂的空燃比接近化学计量比 具有下游空燃比传感器的输出，用于切换每个气缸组中的空燃比的丰富/稀薄切换单元以富或稀，从而对每个下游空燃比传感器进行诊断，响应 检测单元，用于当执行每个气缸组中的空燃比的丰富/稀薄切换时，检测下游空燃比传感器的响应;以及下游传感器测定 确定单元，用于基于检测到的响应来确定下游空燃比传感器的劣化。
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公开(公告)号：US06883307B2
公开(公告)日：2005-04-26
申请号：US10083496
申请日：2002-02-27
申请人： Yoichi Iihoshi , Minoru Ohsuga , Yutaka Takaku
发明人： Yoichi Iihoshi , Minoru Ohsuga , Yutaka Takaku
IPC分类号： F02D45/00 , B01D53/94 , F01N3/08 , F01N3/10 , F01N3/18 , F01N3/20 , F01N3/24 , F01N3/28 , F01N11/00 , F01N13/02 , F02D41/02 , F02D41/14 , F01N3/00
CPC分类号： F01N3/0835 , F01N11/002 , F01N11/007 , F01N13/009 , F01N2550/02 , F01N2550/03 , F02D41/027 , F02D41/1446 , F02D41/1454 , F02D41/1495 , F02D41/187 , Y02T10/20 , Y02T10/47
摘要： In an internal combustion engine diagnosis apparatus comprising a cleanup catalyst arranged on an exhaust pipe of an internal combustion engine and an HC adsorption catalyst arranged downstream of and in parallel to the cleanup catalyst, degradation and failure of the HC adsorption catalyst is accurately diagnosed. The internal combustion engine diagnosis apparatus comprising the cleanup catalyst arranged in the exhaust pipe of the internal combustion engine; and the HC adsorption catalyst arranged in parallel to and downstream of the cleanup catalyst, during high temperature period the HC adsorption catalyst desorbing and cleaning up HC desorbed during low temperature period, wherein degradation of the HC adsorption catalyst is diagnosed based on a gradient of temperature of the HC adsorption catalyst during a period when temperature of the HC adsorption catalyst is within a range of 50° C. to 250° C.
摘要翻译： 在内燃机诊断装置中，具有布置在内燃机的排气管上的净化催化剂和布置在净化催化剂的下游并与催化剂平行的HC吸附催化剂，能够准确地诊断HC吸附催化剂的劣化和失效。 所述内燃机诊断装置包括设置在所述内燃机的排气管内的净化催化剂; HC吸附催化剂在清洗催化剂平行于和下游排列，在高温期间HC吸附催化剂解吸和清除HC在低温期间脱附，其中HC吸附催化剂的降解基于温度梯度被诊断 的HC吸附催化剂的温度在50℃〜250℃的范围内。
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公开(公告)号：US06865880B2
公开(公告)日：2005-03-15
申请号：US10066760
申请日：2002-02-06
IPC分类号： F02D43/00 , B01D53/86 , B01D53/94 , F01N3/20 , F01N3/24 , F02D41/02 , F02D41/04 , F02D41/14 , F02D41/34 , F01N3/00
CPC分类号： F02D41/1446 , F02D41/0235 , F02D41/024 , F02D2041/389 , Y02T10/26
摘要： An exhaust control system for a cylinder fuel injection engine having a cylinder injection injectors directly injecting a fuel into combustion chambers and a catalytic converter provided in an exhaust passage from said combustion chambers for purifying an exhaust gas, such that the air/fuel ratio in the combustion chambers is periodically made richer for quickening activation of catalytic converter.
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