公开(公告)号：US20140278003A1

公开(公告)日：2014-09-18

申请号：US13834411

申请日：2013-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chang H. Kim ,  Michelle H. Wiebenga ,  Eugene V. Gonze

IPC: F02D41/14

CPC classification number: F02D41/1446 ,  F01N3/103 ,  F02D41/027 ,  F02D41/1438 ,  F02D41/1439 ,  F02D41/1445 ,  F02D41/1456 ,  F02D41/1475 ,  Y02A50/2322 ,  Y02T10/47

Abstract: A method is disclosed for assessing and maintaining the use of a palladium-only (i.e., platinum free) oxidation catalyst body to oxidize carbon monoxide and hydrocarbons in the exhaust stream of a diesel engine powered vehicle, which is operated at a fuel-lean air-to-fuel ratio (A/F) for much of the time it powers a vehicle. Periodically, a recent history of the temperatures of the exhaust gas at the inlet to the palladium oxidation catalyst body is prepared in a computer control module. And a recent history of the A/F of the operating engine is considered. These temperature and A/F values are then used in determining whether the engine should be temporarily operated in a fuel-rich or stoichiometric A/F mode to provide an exhaust gas composition suitable for rejuvenation of the palladium by reducing its oxide formed during lean operation of the engine.

Abstract translation: 公开了一种用于评估和维持使用仅钯（即无铂）氧化催化剂体以在柴油发动机动力车辆的废气流中氧化一氧化碳和碳氢化合物的方法，其在贫燃料 燃油比（A / F）。 周期性地，在计算机控制模块中制备钯氧化催化剂体入口处的废气温度的最近历史。 并且考虑了操作引擎A / F的近期历史。 然后将这些温度和A / F值用于确定发动机是否应暂时以富燃料或化学计量的A / F模式运行，以提供适合于通过减少在稀薄运行中形成的氧化物来钯复原的废气组合 的发动机。

公开(公告)号：US20140257676A1

公开(公告)日：2014-09-11

申请号：US13789767

申请日：2013-03-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Halim G. Santoso ,  Eugene V. Gonze ,  James R. Yurgil

IPC: F02D45/00

CPC classification number: F02D45/00 ,  F01B3/06 ,  F02D35/025 ,  F02D35/026 ,  F02D41/065 ,  F02N11/0814

Abstract: A system according to the principles of the present disclosure includes a start-stop module, a pre-ignition risk module, and a cooling control module. The start-stop module stops and restarts an engine independent from an input received from an ignition system. The pre-ignition risk module monitors a risk of pre-ignition when the engine is restarted and generates a signal based on the risk of pre-ignition. The cooling control module controls a cooling system to circulate coolant through the engine when the engine is stopped in response to the risk of pre-ignition.

Abstract translation: 根据本发明的原理的系统包括起动 - 停止模块，预燃险风险模块和冷却控制模块。 启动 - 停止模块停止并重新启动独立于从点火系统接收的输入的发动机。 预燃风险模块监控发动机重新起动时的预点火风险，并根据预燃风险产生信号。 当发动机停机时，冷却控制模块控制冷却系统使冷却剂循环通过发动机，以应对预燃的风险。

公开(公告)号：US20140230408A1

公开(公告)日：2014-08-21

申请号：US13768283

申请日：2013-02-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Eugene V. Gonze ,  Chang H. Kim ,  Michael J. Paratore, JR. ,  George M. Claypole

IPC: F01N3/10

CPC classification number: F01N3/10 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/2066 ,  F01N5/02 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2240/02 ,  F01N2240/36 ,  F01N2410/06 ,  F01N2410/12 ,  F01N2610/02 ,  Y02T10/16 ,  Y02T10/24

Abstract: In one embodiment, a method for controlling nitrogen oxides in an exhaust gas received by an exhaust system, the exhaust system including a first selective catalytic reduction device, an exhaust gas heat recovery device and a second selective catalytic reduction device is provided. The method includes flowing the exhaust gas from an internal combustion engine into the first selective catalytic reduction device, receiving the exhaust gas from the first selective catalytic reduction device into the exhaust gas heat recovery device and directing the exhaust gas to a heat exchanger in the exhaust gas heat recovery device based on a temperature of the internal combustion engine proximate moving engine components. The method includes adsorbing nitrogen oxides from the exhaust gas via a nitrogen oxide adsorbing catalyst disposed in the heat exchanger and flowing the exhaust gas from the exhaust gas heat recovery device into the second selective catalytic reduction device.

Abstract translation: 在一个实施方案中，提供了一种用于控制由排气系统接收的废气中的氮氧化物的方法，所述排气系统包括第一选择性催化还原装置，废气热回收装置和第二选择性催化还原装置。 该方法包括将排气从内燃机流入第一选择性催化还原装置，将排气从第一选择性催化还原装置接收到排气热回收装置中，并将废气引导到排气中的热交换器 基于靠近移动的发动机部件的内燃机的温度的气体热回收装置。 该方法包括通过设置在热交换器中的氮氧化物吸附催化剂从排气中吸附氮氧化物，并将废气从排气热回收装置流入第二选择性催化还原装置。