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    • 1. 发明专利
    • Evaporative emission control system
    • 蒸发排放控制系统
    • JP2014125945A
    • 2014-07-07
    • JP2012282671
    • 2012-12-26
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • MATSUNAGA HIDEOFURUTA MASAHIROIKEDAYA BUNICHIKAMURA HITOSHI
    • F02M25/08F02M37/00
    • F02M25/0809B60K15/03519B60K2015/03514B60K2015/03566B60K2015/03571B60K2015/03585B60Y2200/92Y10T137/86083
    • PROBLEM TO BE SOLVED: To provide an evaporative emission control system capable of reliably performing fixation determination of a sealing valve.SOLUTION: A purge solenoid valve 36 is put into an opened state to set a pressure in a fuel tank 21 as an atmospheric pressure (d). The purge solenoid valve 36 is put into a closed state to set a negative pressure pump 34c into operation (e). Then, the pressure in the tank is set as a reference pressure Pb. Next, a selector valve 34e is put into a closed state (f). The purge solenoid valve 36 is put into an opened state to set a canister 33 into communication with an intake passage 11 (h). Next, the selector valve 34e is put into an opened state, and the purge solenoid valve 36 is put into a closed state (i). Then, a first in-tank pressure Po is detected, and when a first pressure deviation ΔPo calculated by subtracting the first in-tank pressure Po from the reference pressure Pb is greater than a first threshold value ΔP1, a determination is made that a sealing valve 35 is not subjected to opening fixation.
    • 要解决的问题:提供能够可靠地执行密封阀的固定确定的蒸发排放控制系统。解决方案:清洗电磁阀36处于打开状态,以将燃料箱21中的压力设定为大气压( D)。 净化电磁阀36处于关闭状态,将负压泵34c设定为动作(e)。 然后,将罐内的压力设定为基准压力Pb。 接下来,选择阀34e处于关闭状态(f)。 清洗电磁阀36处于打开状态,以将罐33设置成与进气通道11(h)连通。 接下来,选择阀34e处于打开状态,并且清洗电磁阀36处于关闭状态(i)。 然后,检测到第一槽内压力Po,当从基准压力Pb减去第一槽内压力Po计算出的第一压力偏差&Dgr; Po大于第一阈值& Dgr; P1时,判定为 使得密封阀35不经受开口固定。
    • 2. 发明专利
    • Air-fuel ratio detection sensor abnormality diagnostic device
    • 空气 - 燃料比检测传感器异常诊断装置
    • JP2011157938A
    • 2011-08-18
    • JP2010022483
    • 2010-02-03
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • FURUTA MASAHIROSAITO KENJIKAMURA HITOSHI
    • F02D45/00
    • PROBLEM TO BE SOLVED: To provide an air-fuel ratio detection sensor abnormality diagnosis device that accurately determines that an abnormality is occurring in an air-fuel ratio detection sensor that detects an air-fuel ratio of exhaust gas. SOLUTION: An air-fuel ratio detection sensor abnormality diagnosis device includes a reaction delay determination unit 44 for determining that abnormality of reaction delay is occurring in an air-fuel ratio sensor 28 in a case where reaction delay condition is satisfied for a predetermined number of times, and a sensor abnormality diagnosis unit 45 for diagnosing abnormality of the air-fuel ratio sensor 28 based on a determination result of the reaction delay determination unit 44. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够精确地确定在检测排气的空燃比的空燃比检测传感器中发生异常的空燃比检测传感器异常诊断装置。 解决方案:空燃比检测传感器异常诊断装置包括反应延迟确定单元44,用于在对于空燃比传感器28满足反应延迟条件的情况下,确定在空燃比传感器28中发生反应延迟的异常 以及基于反应延迟判定单元44的判断结果来诊断空燃比传感器28的异常的传感器异常诊断部45。[C]版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Egr system of internal combustion engine
    • 内燃机EGR系统
    • JP2008208781A
    • 2008-09-11
    • JP2007046899
    • 2007-02-27
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • FURUTA MASAHIROCHINO DAISUKESAITO KENJIKAMURA HITOSHIIWAMA AKIHIROKADOOKA AKIRA
    • F02D21/08F02D43/00F02D45/00F02M25/07G01M99/00
    • F02B47/08F02D41/0055F02M26/49Y02T10/121
    • PROBLEM TO BE SOLVED: To provide an EGR system of an internal combustion engine for which accurate diagnosis of failure in an EGR device is adequately conducted, and accuracy of the diagnosis of the EGR device is maintained high. SOLUTION: In the case where the opening of an intake air-flow control valve is restrained to a specified opening by a fuel cut, the EGR device is actuated to diagnose a failure of the EGR device on the basis of a change in intake-manifold pressure before and after the operation of the EGR device (S48). In the case where a relaxation control of an intake-manifold negative-pressure is not executed, the change in the intake-manifold pressure is corrected by the amount of change in a first reference intake-pressure (P(Ne)) which changes in accordance with an engine speed Ne (S26). In the case where a relaxation control of the intake-manifold negative-pressure is executed, change in the intake-manifold pressure is corrected by the amount of change in a second reference intake-pressure (PL(Ne)) which changes in accordance with the engine speed Ne (S40). COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种内燃机的EGR系统,其对EGR装置的故障进行准确诊断,并且将EGR装置的诊断精度保持为高。 解决方案:在通过燃料切断将进气流量控制阀的打开限制到指定的开度的情况下,EGR装置被致动以基于EGR装置的变化来诊断EGR装置的故障 在EGR装置的运转前后的进气歧管压力(S48)。 在不执行进气歧管负压的松弛控制的情况下,通过第一基准进气压力(P(Ne))的变化量来校正进气歧管压力的变化, 根据发动机转速Ne(S26)。 在进行进气歧管负压的松弛控制的情况下,进气歧管压力的变化通过第二基准进气压(PL(Ne))的变化量来修正,该第二参考进气压力 发动机转速Ne(S40)。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Catalyst temperature estimating device
    • 催化温度估算装置
    • JP2007309244A
    • 2007-11-29
    • JP2006140163
    • 2006-05-19
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • KAWAKITA KOJIUEDA KATSUNORIMIYATA TOSHIYUKIFURUTA MASAHIRO
    • F02D45/00F01N3/24
    • PROBLEM TO BE SOLVED: To provide a catalyst temperature estimating device capable of accurately estimating the behavior of a catalyst temperature at the time of fuel recovery and preventing damage of the catalyst due to a temperature rise exceeding a heat resistant temperature.
      SOLUTION: At the time of fuel recovery, air-fuel ratio over the catalyst is estimated by an A/F determining part 111 from an exhaust air-fuel ratio A/F taking into consideration an O
      2 storage function of the catalyst. Based on the estimated air-fuel ratio, an engine speed Ne, and filling efficiency Ec, a CO purification reaction calorific value ΔHc when CO in the exhaust gas is purified by O
      2 stored on the catalyst is calculated by a ΔHc calculating part 112, and the CO purification reaction calorific value ΔHc is applied to the estimation processing of the catalyst temperature.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种催化剂温度估计装置,其能够精确地估计燃料回收时的催化剂温度的行为,并且防止由于超过耐热温度的温度升高而导致的催化剂损坏。 解决方案:在燃料回收时,考虑到O 2,从A / F判定部111考虑排气空燃比A / F来估计催化剂的空燃比, SB>催化剂的储存功能。 基于所估计的空燃比,发动机转速Ne和填充效率Ec,计算出在催化剂上储存的O 2 SB 2净化排气中的CO时的CO净化反应热值ΔHc 通过ΔHc计算部112,将CO净化反应发热量ΔHc应用于催化剂温度的推定处理。 版权所有(C)2008,JPO&INPIT
    • 5. 发明专利
    • Failure diagnostic device of thermostat and failure diagnostic method
    • 故障诊断方法及故障诊断方法
    • JP2014020346A
    • 2014-02-03
    • JP2012162937
    • 2012-07-23
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • FURUTA MASAHIROSAITO KENJIKAMURA HITOSHI
    • F01P11/16F01P7/16F02D45/00
    • G01N25/72F01P11/16F01P2025/32F01P2031/30F01P2050/24F01P2060/08
    • PROBLEM TO BE SOLVED: To provide a failure diagnostic device of a thermostat which secures temperature estimation accuracy of cooling water during automatic stopping of an engine and can perform high-accuracy failure diagnosis with a simple constitution.SOLUTION: A failure diagnostic device of a thermostat 14 which controls cooling water flowing to a radiator 13 in accordance with an actual water temperature of cooling water of an engine 10 includes: actual water temperature detection means 16 for detecting an actual water temperature WT; estimated water temperature calculation means 22 for calculating an estimated water temperature of cooling water; and failure diagnosis means 23 for evaluating whether the thermostat 14 causes valve-opening failure by comparing the actual water temperature WT detected by the actual water temperature detection means 16 with the estimated water temperature calculated by the estimated water temperature calculation means 22 upon the cool starting of the engine 10. The estimated water temperature calculation means 22, in an engine stall mode, at least including the duration of automatic stopping of the engine 10, the estimated water temperature in the engine stall mode is calculated by applying temperature behavior of the actual water temperature WT to the estimated water temperature calculated immediately before automatic stopping of the engine 10.
    • 要解决的问题:提供一种恒温器的故障诊断装置,其在发动机自动停止期间确保冷却水的温度估计精度,并且可以以简单的结构执行高精度故障诊断。解决方案:恒温器的故障诊断装置 根据发动机10的冷却水的实际水温来控制流向散热器13的冷却水的控制装置14包括:实际水温检测装置16,用于检测实际的水温WT; 用于计算冷却水的估计水温的预测水温计算单元22; 以及故障诊断装置23,用于通过将实际水温检测装置16检测到的实际水温WT与由冷却开始时的估计水温计算装置22计算的估计水温进行比较来评估恒温器14是否导致开阀故障 估计水温计算装置22在发动机失速模式下至少包括发动机10的自动停止持续时间,通过应用实际的发动机10的温度特性来计算发动机失速模式中的估计水温 水温WT与发动机10自动停止之前计算出的估计水温。
    • 6. 发明专利
    • Engine control device
    • 发动机控制装置
    • JP2010071202A
    • 2010-04-02
    • JP2008239991
    • 2008-09-18
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • KITADA JUNYAFURUTA MASAHIROKAMURA HITOSHI
    • F02D41/14F02D45/00F02M25/00
    • PROBLEM TO BE SOLVED: To provide an engine control device exactly distinguishing abnormality of a fuel supply system and thereby properly controlling an air-fuel ratio.
      SOLUTION: When a feedback control means starts feedback control (step S2), an abnormality determination means determines whether or not fuel in a second delivery pipe is displaced with fuel in a fuel tank (step S3, step S4). The abnormality determination means, when a correction amount difference (absolute value of |R1-R2|) is larger than a first set value RL1 (step S5) in the case that the displacement is finished and when the correction amount difference (absolute value of |R1-R2|) is smaller than a second set value RL2 (step S11) in the case that the displacement is performed, determines that abnormality is caused in the fuel supply system (step S8).
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种正确区分燃料供应系统的异常并因此适当地控制空燃比的发动机控制装置。 解决方案:当反馈控制装置启动反馈控制(步骤S2)时,异常确定装置确定第二输送管中的燃料是否在燃料箱中的燃料位移(步骤S3,步骤S4)。 异常判定单元,在位移结束的情况下,当校正量差(¾R1-R2¾的绝对值)大于第一设定值RL1(步骤S5))时,校正量差(¾R1- R2¾)在进行位移的情况下小于第二设定值RL2(步骤S11),判定在燃料供给系统中发生异常(步骤S8)。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Catalyst temperature estimating device
    • 催化温度估算装置
    • JP2007309243A
    • 2007-11-29
    • JP2006140162
    • 2006-05-19
    • Mitsubishi Motors Corp三菱自動車工業株式会社
    • KAWAKITA KOJIUEDA KATSUNORIMIYATA TOSHIYUKIFURUTA MASAHIRO
    • F01N3/20F01N3/24F02D45/00
    • F01N1/02
    • PROBLEM TO BE SOLVED: To provide a catalyst temperature estimating device capable of accurately estimating the behavior of the catalyst temperature at the time of fuel cut and fuel recovery of an engine and thereby preventing damage of the catalyst due to a temperature rise exceeding the heat resistant temperature. SOLUTION: At the time of fuel cut, an adsorbed CO amount CATco adsorbed on the catalyst is calculated by an adsorbed CO amount calculation part 63, an O 2 amount GASo 2 contained in exhaust gas is calculated by an exhaust gas O 2 amount calculation part 67, a CO oxidation reaction calorific value ▵Hr when these adsorbed CO amount CATco and the exhaust gas O 2 amount GASo 2 are reacted is calculated by a ▵Hr calculating part 70, and these are applied to estimating processing of the catalyst temperature. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种催化剂温度估计装置,其能够精确地估计在燃料切断和发动机的燃料回收时的催化剂温度的行为,从而防止由于升温而引起的催化剂损坏超过 耐热温度。 解决方案:在燃料切断时,吸附在催化剂上的吸附的CO量CATCO通过吸附的CO量计算部分63,O SB SB 2, 废气中的SB>通过排气O 2 SBB计算部67计算出的CO,其CO量COCO和CO 2的CO氧化反应热值▵Hr< / SB>量GASo 2 通过计算部分70计算,并将其应用于估计催化剂温度的处理。 版权所有(C)2008,JPO&INPIT