Integrated system for controlling diesel engine emissions
    5.
    发明授权
    Integrated system for controlling diesel engine emissions 有权
    用于控制柴油机排放的综合系统

    公开(公告)号:US06615580B1

    公开(公告)日:2003-09-09

    申请号:US09961442

    申请日:2001-09-24

    IPC分类号: F01N300

    摘要: A method for controlling diesel engine emissions is disclosed. The diesel engine's exhaust system has a diesel particulate filter (DPF) and a lean NOx trap (LNT). The DPF is a filter and is monitored to determine the need for regeneration. The LNT is monitored to determine the need for regeneration or desulfurization. A fuel injector is used to inject fuel upstream of the LNT under certain conditions, and a bypass may be used to bypass exhaust around the DPF to provide richer or hotter exhaust to the LNT. The sensor outputs and controls for providing the appropriate heat or fuel mix for regeneration and desulfurization may be controlled with enhancements to existing engine control circuitry.

    摘要翻译: 公开了一种控制柴油发动机排放的方法。 柴油发动机的排气系统具有柴油微粒过滤器(DPF)和贫NOx捕集器(LNT)。 DPF是一个过滤器,被监控以确定需要再生。 监测LNT以确定对再生或脱硫的需要。 燃料喷射器用于在某些条件下向LNT上游喷射燃料,并且可以使用旁路来绕过DPF周围的排气,以向LNT提供更丰富或更热的排气。 可以通过对现有发动机控制电路的增强来控制用于提供用于再生和脱硫的适当的热或燃料混合物的传感器输出和控制。

    Method for reducing cold-start hydrocarbon emissions in a gasoline, natural gas, or propane fueled engine
    6.
    发明授权
    Method for reducing cold-start hydrocarbon emissions in a gasoline, natural gas, or propane fueled engine 有权
    减少汽油,天然气或丙烷燃料发动机中冷启动碳氢化合物排放的方法

    公开(公告)号:US06244044B1

    公开(公告)日:2001-06-12

    申请号:US09399878

    申请日:1999-09-20

    申请人: Gordon J. Bartley

    发明人: Gordon J. Bartley

    IPC分类号: F01N300

    摘要: A partial oxidation catalyst is interposed between an exhaust manifold and a catalytic converter in the exhaust system of a gasoline, natural gas, or propane fueled engine. The engine is started from a cold-start and the exhaust gas stream emitted during an initial period of operation after the cold-start has a &lgr; value

    摘要翻译: 在汽油,天然气或丙烷燃料发动机的排气系统中,部分氧化催化剂介于排气歧管和催化转化器之间。 发动机从冷启动起动,并且在冷启动期间在初始操作期间发射的废气流由于在冷启动操作期间提供给发动机的丰富燃烧混合物而具有ℓ值<1。 在初始发动机操作期间通过部分氧化催化剂的烃被部分氧化,并且由于氧化过程产生的氢被用于促进排气系统中催化转化器的更快的点火。 此外,在冷启动后的初始阶段,排放到周围环境中的碳氢化合物排放量减少。

    Method for drive cycle simulation using non-engine based test system
    9.
    发明授权
    Method for drive cycle simulation using non-engine based test system 有权
    基于非引擎的测试系统的驱动循环模拟方法

    公开(公告)号:US07299137B2

    公开(公告)日:2007-11-20

    申请号:US10847034

    申请日:2004-05-17

    IPC分类号: G01B3/44

    摘要: A method for simulating at least one drive cycle of a vehicle using a non-engine based test system, the method including providing a non-engine based test system including a combustor in fluid communication with a catalytic converter from the vehicle; supplying fuel and air to said combustor at an air to fuel ratio (AFR) and under conditions effective to produce a feedstream flowpath; substantially stoichiometrically combusting at least a portion of the fuel in the feedstream flowpath under conditions effective to simulate at least one drive cycle of the vehicle and to produce a simulated drive cycle exhaust product for the vehicle, the conditions being effective to prevent substantial damage to the combustor; and, collecting and analyzing the simulated drive cycle exhaust product.

    摘要翻译: 一种用于使用基于非发动机的测试系统来模拟车辆的至少一个驱动循环的方法,所述方法包括提供基于非发动机的测试系统,所述测试系统包括与来自所述车辆的催化转化器流体连通的燃烧器; 在空气燃料比(AFR)和在有效产生进料流动路径的条件下向燃烧器供应燃料和空气; 在有效模拟车辆的至少一个驱动周期的条件下,在进料流流路中基本上化学计量地燃烧燃料的至少一部分,并且为车辆产生模拟的驱动循环废气产品,该条件有效地防止对 燃烧器 并收集和分析模拟的驱动循环废气产品。