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    • 2. 发明授权
    • Exhaust purification system of internal combustion engine
    • 内燃机排气净化系统
    • US08745972B2
    • 2014-06-10
    • US13318992
    • 2009-05-07
    • Kohei YoshidaTakamitsu AsanumaMasahide IidaYuichi Sobue
    • Kohei YoshidaTakamitsu AsanumaMasahide IidaYuichi Sobue
    • F01N3/00
    • F02D41/028F01N3/035F01N3/0842F01N3/0885F01N3/106F02D2200/0818
    • An exhaust purification system of an internal combustion engine includes an NOX storage reduction catalyst device which is arranged in an engine exhaust passage. The NOX storage reduction catalyst device stores SOX simultaneously with NOX. When the stored SOX amount exceeds a predetermined allowable amount, the SOX is made to be released by SOX release control which raises the temperature of the NOX catalyst device to the SOX releasable temperature, then makes the air-fuel ratio of the exhaust gas which flows into the NOX catalyst device the stoichiometric air-fuel ratio or rich. The NOX catalyst device has a residual SOX storage amount which finally remains even if performing SOX release control depending on the temperature of the NOX catalyst device when performing SOX release control. The system uses the residual SOX storage amount of the current SOX release control as the basis to calculate the SOX release speed at each timing in the current SOX release control.
    • 内燃机的排气净化系统包括设置在发动机排气通路内的NO x储存还原催化剂装置。 NOX储存还原催化剂装置与NOX同时存储SOX。 当储存的SOX量超过预定的允许量时,通过SOX释放控制使SOX释放,NOX释放控制使NOX催化剂装置的温度升高到SOX可释放温度,然后使流动的废气的空燃比 进入NOX催化装置的化学计量空燃比或浓度。 即使在进行SOX释放控制时,根据NO x催化剂装置的温度进行SOX释放控制,NO X催化剂装置仍具有残留的SO x储存量。 该系统使用当前SOX释放控制的剩余SOX存储量作为在当前SOX释放控制中的每个定时计算SOX释放速度的基础。
    • 5. 发明申请
    • EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    • 内燃机排气净化系统
    • US20120047878A1
    • 2012-03-01
    • US13318992
    • 2009-05-07
    • Kohei YoshidaTakamitsu AsanumaMasahide IidaYuichi Sobue
    • Kohei YoshidaTakamitsu AsanumaMasahide IidaYuichi Sobue
    • F01N9/00
    • F02D41/028F01N3/035F01N3/0842F01N3/0885F01N3/106F02D2200/0818
    • An exhaust purification system of an internal combustion engine includes an NOX storage reduction catalyst device which is arranged in an engine exhaust passage. The NO storage reduction catalyst device stores SOX simultaneously with NOX. When the stored SOX amount exceeds a predetermined allowable amount, the SOX is made to be released by SOX release control which raises the temperature of the NOX catalyst device to the SOX releasable temperature, then makes the air-fuel ratio of the exhaust gas which flows into the NOX catalyst device the stoichiometric air-fuel ratio or rich. The NOX catalyst device has a residual SOX storage amount which finally remains even if performing SOX release control depending on the temperature of the NOX catalyst device when performing SOX release control. The system uses the residual SOX storage amount of the current SOX release control as the basis to calculate the SOX release speed at each timing in the current SOX release control.
    • 内燃机的排气净化系统包括设置在发动机排气通路内的NO x储存还原催化剂装置。 NO储存还原催化剂装置与NOX同时存储SOX。 当储存的SOX量超过预定的允许量时,通过SOX释放控制使SOX释放,NOX释放控制使NOX催化剂装置的温度升高到SOX可释放温度,然后使流动的废气的空燃比 进入NOX催化装置的化学计量空燃比或浓度。 即使在进行SOX释放控制时,根据NO x催化剂装置的温度进行SOX释放控制,NO X催化剂装置仍具有残留的SO x储存量。 该系统使用当前SOX释放控制的剩余SOX存储量作为在当前SOX释放控制中的每个定时计算SOX释放速度的基础。