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31.发明申请公开(公告)号：US20110030348A1
公开(公告)日：2011-02-10
申请号：US12536687
申请日：2009-08-06
CPC分类号： F01N3/208 , F01N3/021 , F01N3/103 , F01N11/002 , F01N13/009 , F01N2430/06 , F01N2550/02 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/02 , Y02T10/24 , Y02T10/47
摘要： An engine system includes an aging factor generation module, a temperature comparison module, and a mode control module. The aging factor generation module generates an aging factor that indicates deterioration of a catalyst in a selective catalytic reduction (SCR) system. The temperature comparison module compares inlet and outlet temperatures of the SCR system to predetermined effective inlet and outlet temperatures of the SCR system, respectively, wherein the predetermined effective inlet and outlet temperatures are based on the aging factor. The mode control module controls at least one of a throttle and a plurality of fuel injectors based on a first predetermined air/fuel (A/F) ratio when the inlet and outlet temperatures of the SCR system are greater than the predetermined effective inlet and outlet temperatures of the SCR system, respectively.
摘要翻译： 发动机系统包括老化因子产生模块，温度比较模块和模式控制模块。 老化因子产生模块产生表明选择性催化还原（SCR）系统中的催化剂劣化的老化因子。 温度比较模块将SCR系统的入口和出口温度分别与SCR系统的预定有效入口和出口温度进行比较，其中预定的有效入口和出口温度基于老化因子。 当SCR系统的入口和出口温度大于预定的有效入口和出口时，模式控制模块基于第一预定空气/燃料（A / F）比来控制节流阀和多个燃料喷射器中的至少一个 SCR系统的温度分别为。
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32.发明申请公开(公告)号：US20130245918A1
公开(公告)日：2013-09-19
申请号：US13419221
申请日：2012-03-13
CPC分类号： F01N3/023 , F01N3/025 , F01N3/0253 , F01N3/027 , F01N3/035 , F01N3/103 , F01N3/2066 , F01N3/36 , F01N9/002 , F01N13/009 , F01N2430/085 , F01N2610/02 , F01N2610/03 , F01N2900/0416 , F01N2900/1404 , F01N2900/1411 , F01N2900/1602 , F01N2900/1631 , F02B29/0406 , F02B37/00 , F02D41/024 , Y02T10/47
摘要： In one exemplary embodiment of the invention, an internal combustion engine includes a fuel system in fluid communication with a cylinder to direct a fuel flow to be mixed with air in the cylinder and an exhaust system in fluid communication with the cylinder to receive an exhaust gas produced by the combustion process, wherein the exhaust system includes an oxidation catalyst, a particulate filter downstream of the oxidation catalyst. The system also includes a control module that determines an amount of energy to be provided by at least one of: a post-injection process, hydrocarbon injector, and heating device, wherein the amount of energy is based on a desired temperature at a selected location in the exhaust system, an exhaust gas flow rate, a temperature of the received exhaust gas, a flow rate and temperature of the exhaust gas at the inlet of the oxidation catalyst.
摘要翻译： 在本发明的一个示例性实施例中，内燃机包括与气缸流体连通以将燃料流与气缸中的空气混合的燃料系统和与汽缸流体连通以接收废气的排气系统 由燃烧过程产生，其中排气系统包括氧化催化剂，氧化催化剂下游的颗粒过滤器。 该系统还包括控制模块，该控制模块确定由以下至少之一提供的能量的量：后喷射过程，烃喷射器和加热装置，其中能量的量基于所选位置处的期望温度 在排气系统中，废气流量，接收废气的温度，流量和氧化催化剂入口处的废气的温度。
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公开(公告)号：US08504280B2
公开(公告)日：2013-08-06
申请号：US12886981
申请日：2010-09-21
CPC分类号： F01N11/00 , F01N3/025 , F01N3/106 , F01N9/002 , F01N13/009 , F01N2550/05 , F01N2900/0422 , F01N2900/1814 , F02D2200/0625 , Y02T10/47
摘要： A diagnostic system for an engine includes an error detection module and a diagnostic module. The error detection module selectively detects a fuel control error based on a change in a fuel correction value used to determine a quantity of fuel supplied directly to an exhaust system. The diagnostic module identifies a cause of the fuel control error based on a period since a last refueling event. The diagnostic module identifies the cause as one of variation in an actual heating value of the fuel and faulty operation of a fuel injection system that supplies the fuel. The diagnostic module further identifies the cause based on a first amount of the fuel contained in a fuel tank at a start of the last refueling event and a second amount of the fuel added to the fuel tank during the last refueling event. A control system and method are also provided.
摘要翻译： 用于发动机的诊断系统包括错误检测模块和诊断模块。 误差检测模块基于用于确定直接供应到排气系统的燃料量的燃料校正值的变化来选择性地检测燃料控制误差。 诊断模块基于自上次加油事件以来的时间段来识别燃料控制误差的原因。 诊断模块将原因识别为燃料的实际发热值和供应燃料的燃料喷射系统的故障操作之一的变化之一。 诊断模块进一步基于在最后一次加油事件开始时容纳在燃料箱中的燃料的第一量以及在最后一次加油事件期间添加到燃料箱中的第二量的燃料来识别原因。 还提供了一种控制系统和方法。
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公开(公告)号：US20120258015A1
公开(公告)日：2012-10-11
申请号：US13083024
申请日：2011-04-08
申请人： Shouxian Ren , Rahul Mital , Jason Daniel Mullins
发明人： Shouxian Ren , Rahul Mital , Jason Daniel Mullins
IPC分类号： B01D50/00
CPC分类号： B01D53/9477 , B01D53/9418 , B01D53/944 , B01D2255/1021 , B01D2255/2022 , B01D2255/2027 , B01D2255/2063 , B01D2255/2065 , B01D2255/20707 , B01D2255/20723 , B01D2255/2073 , B01D2255/20738 , B01D2255/20761 , B01D2255/20769 , B01D2255/50 , F01N3/2073 , F01N2370/04 , F01N2560/026 , F01N2610/02 , Y02T10/24
摘要： An exhaust system for an engine comprises a selective catalytic reduction (“SCR”) device having a NOx reducing selective catalytic reduction composition disposed thereon. A particulate filter is disposed in the rigid shell or canister downstream of the selective catalytic reduction device. An ammonia dosing system comprising a controller in signal communication with NOx sensors located upstream and downstream of the selective catalytic reduction device for injection of ammonia into the exhaust gas upstream of the SCR device based on information collected from the NOx sensors to thereby optimize the reduction of NOx in the exhaust gas. An ammonia-neutral oxidation catalyst compound is disposed on the wall-flow substrate of the particulate filter device and is configured to pass through ammonia constituents of the exhaust gas exiting the selective catalytic reduction device with little or no conversion of the ammonia constituents to N2, N2O and NOx.
摘要翻译： 用于发动机的排气系统包括选择性催化还原（SCR）装置，其具有设置在其上的NOx还原选择性催化还原组合物。 微粒过滤器设置在选择性催化还原装置下游的刚性壳或罐中。 一种氨计量系统，包括与位于选择性催化还原装置的上游和下游的NOx传感器进行信号通信的控制器，用于基于从NOx传感器收集的信息将氨注入到SCR装置上游的废气中，从而优化 废气中的NOx。 氨中和氧化催化剂化合物设置在颗粒过滤装置的壁流基板上，并被构造成通过少量或不将氨成分转化为N2而排出离开选择性催化还原装置的废气的氨成分， N2O和NOx。
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