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公开(公告)号：US07266942B2
公开(公告)日：2007-09-11
申请号：US11136533
申请日：2005-05-25
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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12.发明申请公开(公告)号：US20060144370A1
公开(公告)日：2006-07-06
申请号：US10563099
申请日：2004-02-06
申请人： Yoichi Iihoshi , Shinji Nakagawa , Toshio Hori , Akira Hikichi
发明人： Yoichi Iihoshi , Shinji Nakagawa , Toshio Hori , Akira Hikichi
CPC分类号： F02M25/0818 , F02B2075/125 , F02D2200/0612 , F02M25/0809 , Y02T10/123
摘要： Pressure detection means detects the pressure of an evaporation purge system that includes a fuel tank and a communicating tube, which connects a canister for adsorbing and retaining fuel vapor to an intake pipe. Shutout means shuts out the evaporation purge system from atmospheric air. A pump is driven for pressurization or depressurization purposes while the shutout means shuts out the evaporation purge system from atmospheric air. The pump is stopped when the pressure detected by the pressure detection means reaches a predetermined level. A leak judgment is formulated in accordance with pump drive time and a pressure change after pump stoppage.
摘要翻译： 压力检测装置检测包括燃料箱和连通管的蒸发吹扫系统的压力，该连通管连接用于吸附和保持燃料蒸汽的进气管的罐。 疏水装置意味着从大气中排出蒸发清洗系统。 驱动泵用于加压或减压目的，而关闭装置则将蒸发吹扫系统从大气中排出。 当压力检测装置检测到的压力达到预定水平时，泵停止。 根据泵驱动时间和泵停止后的压力变化来制定泄漏判定。
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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：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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15.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：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：US08108094B2
公开(公告)日：2012-01-31
申请号：US11945604
申请日：2007-11-27
IPC分类号： G01M17/00
CPC分类号： F02D41/22 , F02D35/023 , F02D35/024 , F02D41/0045 , F02D41/0072 , F02D2041/1433 , F02D2200/1006 , G01M15/042
摘要： Any anomaly in energy transfer is appropriately diagnosed in a vehicle. The energy transfer system of a vehicle is provided with: an input energy computation means (e.g., the chemical energy of fuel computation means) for determining the input energy of the energy transfer system; an output energy computation means (e.g., the vehicle kinetic energy computation means) for determining the energy output of the energy transfer system; and a comparing means (e.g., the comparing means) for comparing the input energy with the output energy. Any anomaly in the energy transfer system (e.g., any anomaly in fuel efficiency) is determined based on the result of comparison by the comparing means.
摘要翻译： 能量转移的任何异常在车辆中得到适当诊断。 车辆的能量传递系统具有：用于确定能量传递系统的输入能量的输入能量计算装置（例如燃料计算装置的化学能）; 用于确定能量传递系统的能量输出的输出能量计算装置（例如，车辆动能计算装置）; 以及用于将输入能量与输出能量进行比较的比较装置（例如比较装置）。 基于比较装置的比较结果，确定能量传递系统中的任何异常（例如燃料效率的任何异常）。
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公开(公告)号：US20090205413A1
公开(公告)日：2009-08-20
申请号：US12353537
申请日：2009-01-14
IPC分类号： G01M15/04
CPC分类号： F02M65/003
摘要： A diagnostic apparatus is combined with a high-pressure fuel supply system including a high-pressure fuel pump, a fuel rail, injectors, and a fuel pressure measuring unit for measuring fuel pressure in the fuel rail. The diagnostic apparatus is capable of detecting troubles in the high-pressure fuel pump and injectors and of discriminating between a trouble in the high-pressure fuel pump and a trouble in the injectors includes. The diagnostic apparatus includes: a pump discharge component calculating unit 111 for determining fuel pressure variation synchronous with the operation of the high-pressure fuel pump from the fuel pressure, an injection component calculating unit 112 for determining fuel pressure variation synchronous with the operation of the injectors, a rotating speed component calculating unit 113 for determining fuel pressure variation synchronous with the rotation of a drive shaft for driving the high-pressure fuel pump, a control component calculating unit 114 for determining fuel variation during a control operation for adjusting the fuel pressure to a predetermined desired fuel pressure, and a direct current component calculating unit 115 for calculating a direct current component of fuel pressure variation. The diagnostic apparatus decides whether or not the high-pressure fuel system is malfunctioning on the basis of results of calculation made by those calculating units.
摘要翻译： 诊断装置与包括用于测量燃料轨道中的燃料压力的高压燃料泵，燃料轨，喷射器和燃料压力测量单元的高压燃料供应系统组合。 诊断装置能够检测高压燃料泵和喷射器中的故障，并且识别高压燃料泵中的故障和喷射器中的故障包括。 诊断装置包括：用于根据燃料压力确定与高压燃料泵的运行同步的燃料压力变化的泵排出分量计算单元111，用于确定与燃料压力变化同步的燃料压力变化的喷射分量计算单元112 喷射器，用于确定与用于驱动高压燃料泵的驱动轴的旋转同步的燃料压力变化的转速分量计算单元113，用于在用于调节燃料压力的控制操作期间确定燃料变化的控制部件计算单元114 以及用于计算燃料压力变化的直流分量的直流分量计算单元115。 诊断装置基于这些计算单元的计算结果，判定高压燃料系统是否发生故障。
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公开(公告)号：US07559193B2
公开(公告)日：2009-07-14
申请号：US11589890
申请日：2006-10-31
IPC分类号： F01N3/00
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。
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20.发明申请公开(公告)号：US20090082939A1
公开(公告)日：2009-03-26
申请号：US12192557
申请日：2008-08-15
IPC分类号： F02D45/00
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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