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公开(公告)号：US20190010883A1
公开(公告)日：2019-01-10
申请号：US15642699
申请日：2017-07-06
发明人： Andrea PANNUZZO , Andrea DUTTO , Luca GATTI , Cristian TAIBI
CPC分类号： F02D41/0235 , F01N11/002 , F01N2430/06 , F01N2550/02 , F01N2550/04 , F01N2560/06 , F01N2900/1602 , F01N2900/1631 , F02D41/0002 , F02D41/0052 , F02D41/1441 , F02D41/3076 , F02D41/401 , F02D41/402 , F02D41/405 , F02D2041/0265 , F02D2200/0802
摘要： A system and method for monitoring the temperature in a vehicle after-treatment system is provided. The system includes one or more temperature sensors positioned in the vehicle after-treatment system and an electronic control unit (ECU) configured by programming instructions encoded in computer readable media to execute a method. The method includes monitoring the temperature presented by the one or more temperature sensors, executing a lower oxygen combustion strategy for a slower exothermic reaction when the temperature exceeds a first threshold level, and deactivating the lower oxygen combustion strategy when the temperature drops below a second threshold level.
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公开(公告)号：US20180340456A1
公开(公告)日：2018-11-29
申请号：US15606083
申请日：2017-05-26
发明人： Andrea PANNUZZO , Luca GATTI
CPC分类号： F01N3/2053 , F01N3/021 , F01N3/031 , F01N9/00 , F01N2410/00 , F01N2410/02 , F01N2560/06 , F01N2900/1404 , F01N2900/1602
摘要： A method for controlling a valve for directing an exhaust gas stream through an exhaust duct having an after treatment device and a bypass duct in an exhaust system of a vehicle is provided. The method includes receiving first sensor signals from a first sensor coupled downstream from the exhaust after treatment device, and processing the first sensor signals to determine a first temperature of an outlet exhaust gas stream. The method includes determining a bypass command based on whether the first temperature exceeds a first pre-defined threshold for the outlet exhaust gas stream. The method also includes outputting a control signal based on the determining of the bypass command to a valve coupled to the bypass duct and the exhaust pipe upstream of the after treatment device to move the valve between a first state and a second state.
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