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    • 2. 发明申请
    • METHOD FOR MONITORING THE PERFORMANCE OF A CATALYTIC CONVERTER
    • 监测催化转化器性能的方法
    • WO1998038415A1
    • 1998-09-03
    • PCT/US1997022634
    • 1997-12-04
    • MOTOROLA INC.
    • MOTOROLA INC.BUSH, Kevin, J.CHURCH, Bruce, A.FRANKOWSKI, David
    • F01N03/00
    • F01N11/00F01N11/007F01N2550/02F01N2900/0422Y02T10/47
    • A method for monitoring the performance of a catalytic converter (34) computes the oxygen storage capacity and desorption capacity of a catalyst within the catalytic converter (34). An engine control unit (10) receives mass flow rate information of air from a mass air flow rate sensor (12) and an injector driver (24), and receives electrical signals from an upstream exhaust gas sensor (28) and a downstream exhaust gas sensor (30). The engine control unit (10) calculates normalized air fuel ratios for the exhaust gas entering and leaving the catalytic converter (34) and performs numerical integration to determine the oxygen storage capacity and oxygen desorption capacity of the catalyst in the catalytic converter (34). The calculated oxygen storage and desorption capacities of the catalyst are compared with threshold values to determine the performance of the catalytic converter (34).
    • 用于监测催化转化器(34)的性能的方法计算催化转化器(34)内的催化剂的储氧能力和解吸能力。 发动机控制单元(10)从质量空气流量传感器(12)和喷射器驱动器(24)接收空气的质量流量信息,并且从上游废气传感器(28)和下游排气 传感器(30)。 发动机控制单元(10)计算进入和离开催化转化器(34)的废气的归一化空燃比,并执行数值积分,以确定催化转化器(34)中的催化剂的储氧能力和氧解吸能力。 将催化剂的计算氧气存储和解吸能力与阈值进行比较以确定催化转化器(34)的性能。
    • 4. 发明申请
    • AN INTERNAL COMBUSTION ENGINE
    • 内燃机
    • WO1994013936A1
    • 1994-06-23
    • PCT/DK1993000385
    • 1993-11-29
    • MAN B&W DIESEL A/S
    • MAN B&W DIESEL A/SKNUDSEN, Thomas, Synnestvedt
    • F01N03/00
    • F02B25/28F01N3/10F01N3/2053F01N3/24F01N3/28F01N13/011F01N13/107
    • In a V-engine a reactor (24; 24') for reducing the content of undesired compounds in the exhaust gas, such as NOx, is disposed between the two rows of cylinders (4). With this positioning the reactor does not occupy space in the engine room around the engine and at the same time the reactor is kept hot by the radiation and convection heat generated by the engine when the exhaust gas is not flown through the reactor. The reactor (24') may be integral with the exhaust gas receiver (18') of the engine, preferably so that the internal cavity of the receiver is separated from the reactor by means of a partition wall (28'), thereby making it possible to pass only exhaust gas through the reactor when there is a need for purification of the gas.
    • 在V型发动机中,用于减少排气中不想要的化合物(如NOx)的反应器(24; 24')设置在两排气缸(4)之间。 通过这种定位,反应器不会在发动机周围的发动机室中占据空间,同时当排气不通过反应器时,反应器被发动机产生的辐射和对流热量保持热。 反应器(24')可以与发动机的排气接收器(18')成一体,优选地使得接收器的内部腔通过分隔壁(28')与反应器分离,从而使其 当需要净化气体时,可能仅通过废气通过反应器。
    • 5. 发明申请
    • METHOD FOR CONTROLLING THE LEVEL OF OXYGEN STORED BY A CATALYST WITHIN A CATALYTIC CONVERTER
    • 用于控制催化转化器中催化剂存储的氧气含量的方法
    • WO1998038416A1
    • 1998-09-03
    • PCT/US1997023179
    • 1997-12-04
    • MOTOROLA INC.
    • MOTOROLA INC.BUSH, Kevin, J.CHURCH, Bruce, A.FRANKOWSKI, DavidSCHUMACHER, Darren, A.BADALAMENT, Michael
    • F01N03/00
    • F02D41/0295F01N11/007F01N2550/02F01N2900/0422F02D41/1441F02D41/1475F02D2200/0814Y02T10/47
    • The catalyst control method of the invention continuously estimates a level of oxygen stored by a catalyst within a catalytic converter. The estimated oxygen stored by the catalyst is compared to a predetermined threshold and positive or negative deviations in the oxygen amount from the threshold is determined. When a positive deviation from the threshold amount is detected, the air/fuel ratio flowing into an engine (16) is decreased. Correspondingly, when a negative deviation is detected, the air/fuel ratio flowing into the engine (16) is increased. The amount of oxygen stored by the catalyst is determined by analyzing signals from a first gas sensor (28) positioned upstream from a catalytic converter (34) and a second gas sensor (30) positioned downstream from the catalytic converter (34). An engine control unit (10) integrates an expression for the mass flow rate of excess oxygen into the catalytic converter (34). Engine control unit (10) applies a change in air/fuel ratio to maintain the oxygen level on the catalyst within the catalytic converter (34) at a desired level.
    • 本发明的催化剂控制方法连续地估计催化转化器内的催化剂储存的氧含量。 将由催化剂储存的估计氧气与预定阈值进行比较,并确定氧气量与阈值的正或负偏差。 当检测到与阈值量的正偏差时,流入发动机(16)的空气/燃料比减少。 相应地,当检测到负偏差时,流入发动机(16)的空气/燃料比增加。 通过分析来自位于催化转化器(34)上游的第一气体传感器(28)和位于催化转化器(34)下游的第二气体传感器(30)的信号来确定催化剂存储的氧气的量。 发动机控制单元(10)将过量氧气的质量流量的表达式整合到催化转化器(34)中。 发动机控制单元(10)应用空燃比的变化,以将催化转化器(34)内的催化剂上的氧气水平维持在期望的水平。
    • 8. 发明申请
    • EXHAUST GAS PREHEATING SYSTEM
    • 排气预加热系统
    • WO1994003710A1
    • 1994-02-17
    • PCT/US1993006850
    • 1993-07-21
    • ERGENICS, INC.
    • ERGENICS, INC.GOLBEN, P., MarkFOX, John, E.
    • F01N03/00
    • B01D53/9454F01N3/0205F01N3/2006F01N13/011F01N2240/02Y02A50/2324Y02T10/22Y02T10/26Y10S420/90
    • A system and method is provided whereby exhaust gases from a cold started internal combustion engine (41) are rapidly brought to catalytic combustion conditions. Specifically, a closed system of a low pressure metal hydride heat exhanger (44) and a high pressure metal hydride heat exchanger (48) is provided which, upon engine ignition, effectuates hydrogen flow from the high pressure alloy exchanger (48) with rapid heating of the low pressure alloy in the low pressure metal hydride heat exchanger (44) due to hydrogen occlusion, and with the further provision that the heated low pressure hydride alloy exchanger (44) is in heat exchange relationship with the cold started engine exhaust gases or the vehicle catalytic converter (23) and provides heat necessary for initiation of catalytic combustion of pollutants in the exhaust gases.
    • 提供了一种系统和方法,其中来自冷启动内燃机(41)的废气迅速地进入催化燃烧条件。 具体地说,提供一种低压金属氢化物热交换器(44)和高压金属氢化物热交换器(48)的封闭系统,其在发动机点火时通过快速加热实现来自高压合金交换器(48)的氢气流 的低压金属氢化物热交换器(44)中的低压合金由于吸氢而进一步规定,并且进一步规定加热的低压氢化物合金交换器(44)与冷起动的发动机废气或 车辆催化转化器(23),并且提供引发废气中污染物的催化燃烧所需的热量。
    • 9. 发明申请
    • INSULATED EXHAUST PIPE AND METHOD AND MEANS FOR PRODUCING AND CONNECTING SAME
    • 绝缘排气管及其生产和连接方法及方法
    • WO1991002143A1
    • 1991-02-21
    • PCT/US1990004253
    • 1990-07-30
    • MANVILLE CORPORATION
    • MANVILLE CORPORATIONBAINBRIDGE, David, WilliamOLBERT, William, Harrison
    • F01N03/00
    • F16L59/184F01N13/14F01N13/141F01N13/18F01N13/1811F01N13/1816F01N2310/02F01N2450/00F01N2450/22F01N2450/24F01N2450/28F01N2470/24F16L59/153F16L59/21
    • An insulated exhaust pipe (10) comprising inner and outer spaced corrugated metallic tubes (12, 14) separated by a layer of low density refractory fiber insulation (16) and strips of higher density refractory fibers insulation (18). The pipe (10) is made by adhering the insulation (18) to the inner tube (12) and inserting the insulated inner tube (12) into the outer tube (14) while rotating it so that the corrugations (22) of the outer tube (14) do not damage the insulation (18). Attachment means (134) for connecting a corrugated insulated pipe (154) to an element in the exhaust system means include a conduit (130) having a transverse lug (138) which allows the conduit (130) to be threaded into the pipe (154). The end of the pipe (154) is received in an end cap (142) slidably mounted on the conduit (130). A stop (140) on the conduit (130) limits relative movement of the pipe (154) and conduit (130), permitting the connection between the pipe (154) and conduit to be tightened.
    • 一种绝缘排气管(10),包括由一层低密度耐火纤维绝缘层(16)和较高密度耐火纤维绝缘层(18)隔开的内部和外部隔开的波纹状金属管(12,14)。 管(10)通过将绝缘体(18)粘附到内管(12)并将绝缘内管(12)插入外管(14)中,同时使其外露的波纹(22) 管(14)不会损坏绝缘层(18)。 用于将波纹绝缘管道(154)连接到排气系统装置中的元件的附接装置(134)包括具有横向突出部(138)的导管(130),该导管允许导管(130)拧入管道(154) )。 管道(154)的端部容纳在可滑动地安装在导管(130)上的端盖(142)中。 导管(130)上的止动件(140)限制了管道(154)和管道(130)的相对运动,从而允许管道(154)和管道之间的连接被紧固。