Method and a device for purifying exhaust gas of an internal combustion
engine
    11.
    发明授权
    Method and a device for purifying exhaust gas of an internal combustion engine 失效
    内燃机废气净化方法及装置

    公开(公告)号:US5979157A

    公开(公告)日:1999-11-09

    申请号:US911532

    申请日:1997-08-14

    摘要: A device for purifying exhaust gas includes an HC adsorbent and an exhaust gas purifying catalyst disposed in an exhaust gas passage in this order from the upstream side. The exhaust gas purifying catalyst is provided with an O.sub.2 storage capability, i.e., the exhaust gas purifying catalyst is capable of absorbing oxygen in the exhaust gas when the air-fuel ratio of the exhaust gas is lean, and is capable of releasing the absorbed oxygen when the air-fuel ratio of the exhaust gas becomes rich. When the engine starts, the HC adsorbent adsorbs HC in the exhaust gas. When the temperature of the exhaust gas becomes high, the HC adsorbent releases the adsorbed HC. The device also includes an engine control unit which operates the engine at a lean air-fuel ratio during a predetermined period before the releasing of the HC from the HC adsorbent occurs. Therefore, oxygen is absorbed and stored in the exhaust gas purifying catalyst before the releasing of HC occurs. When the releasing of HC from the HC adsorbent occurs, the air-fuel ratio of the exhaust gas flowing into the exhaust gas purifying catalyst becomes rich due to the HC released from the HC adsorbent. This causes the exhaust gas purifying catalyst to release the absorbed oxygen, and the HC in the exhaust gas is purified by the exhaust gas purifying catalyst using the released oxygen.

    摘要翻译: 废气净化装置包括从上游侧依次排列在废气通道内的HC吸附剂和排气净化催化剂。 废气净化催化剂具有O 2储存能力,即,当废气的空燃比稀的时,废气净化催化剂能够吸收废气中的氧,并且能够释放吸收的氧 当排气的空燃比变浓时, 当发动机启动时,HC吸附剂吸附废气中的HC。 当废气的温度变高时,HC吸附剂释放吸附的HC。 该装置还包括发动机控制单元,其在从HC吸附剂释放HC之前的预定时间段内以稀空燃比操作发动机。 因此,在HC释放出现之前,氧气被吸收并储存在排气净化催化剂中。 当从HC吸附剂中释放出HC时,流入废气净化催化剂的排气的空燃比由于从HC吸附剂释放的HC而变浓。 这使得废气净化催化剂释放吸收的氧,并且通过使用释放的氧气的废气净化催化剂净化废气中的HC。

    Fuel control apparatus for internal combustion engine
    14.
    发明授权
    Fuel control apparatus for internal combustion engine 有权
    内燃机燃油控制装置

    公开(公告)号:US09239018B2

    公开(公告)日:2016-01-19

    申请号:US13640673

    申请日:2010-06-16

    摘要: A fuel control apparatus (100) for an internal combustion engine in a vehicle, the vehicle provided with: the internal combustion engine (200) provided with a fuel supply apparatus (208, 209) capable of supplying, as fuel, first fuel (liquid fuel) and second fuel (CNG) in which amount of a reducing agent in an exhaust air under an rich air-fuel ratio is greater than that in the first fuel; and an exhaust purification apparatus (300, 400) disposed in an exhaust passage of the internal combustion engine, the fuel control apparatus provided with: a first controlling device for controlling the fuel supply apparatus such that the supply of the fuel is temporarily stopped under a predetermined condition; and a second controlling device for controlling the fuel supply apparatus such that the second fuel is supplied as the fuel and such that an exhaust air-fuel ratio is the rich air-fuel ratio, if the supply of the fuel is restarted from a state in which the supply of the fuel is temporarily stopped.

    摘要翻译: 一种用于车辆内燃机的燃料控制装置(100),所述车辆设置有:内燃机(200),其具备能够供给作为燃料的第一燃料(液体)的燃料供给装置(208,209) 燃料)和第二燃料(CNG),其中富空燃比排气中的还原剂的量大于第一燃料中的还原剂量; 以及设置在所述内燃机的排气通路中的排气净化装置(300,400),所述燃料控制装置具备:控制所述燃料供给装置的第一控制装置,使得燃料的供给暂时停止在 预定条件; 以及第二控制装置,用于控制燃料供应装置,使得第二燃料作为燃料供应并且使得排气空燃比是浓空燃比,如果燃料的供应从 燃料供应暂时停止。

    Method for estimating amount of heat received by refrigerant and controller
    16.
    发明授权
    Method for estimating amount of heat received by refrigerant and controller 有权
    用于估算制冷剂和控制器接收的热量的方法

    公开(公告)号:US08560170B2

    公开(公告)日:2013-10-15

    申请号:US13126943

    申请日:2009-01-30

    IPC分类号: G06F7/00 G06F19/00 G06G7/70

    摘要: A method for estimating the amount of heat received by refrigerant by an ECU comprises a step for detecting an estimation factor including the intake air amount of an internal combustion engine, and a step for estimating the amount of heat received from exhaust gas by cooling water of the internal combustion engine in a water-cooled exhaust manifold based on a detected estimation factor. Preferably, the estimation factor further includes at least any one of the cooling water temperature, the intake air temperature of the internal combustion engine, or the number of revolutions of the internal combustion engine.

    摘要翻译: 用于估计由ECU由制冷剂接收的热量的方法包括用于检测包括内燃机的进气量的估计因子的步骤,以及用于估计由冷却水排出的废气的热量的步骤 基于检测到的估计因子的水冷式排气歧管中的内燃机。 优选地,估计因子还包括冷却水温度,内燃机的进气温度或内燃机的转速中的至少任一个。

    FUEL CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    17.
    发明申请
    FUEL CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
    燃油控制装置内燃机

    公开(公告)号:US20130030671A1

    公开(公告)日:2013-01-31

    申请号:US13640673

    申请日:2010-06-16

    IPC分类号: G06F17/00

    摘要: A fuel control apparatus (100) for an internal combustion engine in a vehicle, the vehicle provided with: the internal combustion engine (200) provided with a fuel supply apparatus (208, 209) capable of supplying, as fuel, first fuel (liquid fuel) and second fuel (CNG) in which amount of a reducing agent in an exhaust air under an rich air-fuel ratio is greater than that in the first fuel; and an exhaust purification apparatus (300, 400) disposed in an exhaust passage of the internal combustion engine, the fuel control apparatus provided with: a first controlling device for controlling the fuel supply apparatus such that the supply of the fuel is temporarily stopped under a predetermined condition; and a second controlling device for controlling the fuel supply apparatus such that the second fuel is supplied as the fuel and such that an exhaust air-fuel ratio is the rich air-fuel ratio, if the supply of the fuel is restarted from a state in which the supply of the fuel is temporarily stopped.

    摘要翻译: 一种用于车辆内燃机的燃料控制装置(100),所述车辆设置有:内燃机(200),其具备能够供给作为燃料的第一燃料(液体)的燃料供给装置(208,209) 燃料)和第二燃料(CNG),其中富空燃比排气中的还原剂的量大于第一燃料中的还原剂量; 以及设置在所述内燃机的排气通路中的排气净化装置(300,400),所述燃料控制装置具备:控制所述燃料供给装置的第一控制装置,使得燃料的供给暂时停止在 预定条件; 以及第二控制装置,用于控制燃料供应装置,使得第二燃料作为燃料供应并且使得排气空燃比是浓空燃比,如果燃料的供应从 燃料供应暂时停止。

    Rapid catalyst warm-up control device for internal combustion engine
    20.
    发明授权
    Rapid catalyst warm-up control device for internal combustion engine 有权
    内燃机快速催化预热控制装置

    公开(公告)号:US07047727B2

    公开(公告)日:2006-05-23

    申请号:US10853715

    申请日:2004-05-26

    IPC分类号: F01N3/00

    摘要: A rapid catalyst warm-up control device for an internal combustion engine performs irregular injection dither control during the rapid catalyst warm-up control after starting the engine. In the irregular injection dither control, injection modes are switched after every fuel injection to the cylinders (every 180° CA for a 4-cylinder engine) between a lean injection mode and a rich injection mode in such a pattern that rich injections will not occur consecutively for the same cylinder (dither cycle=540° CA, 900° CA, 1080° CA, or the like). In the lean injection mode, fuel is injected such that the air-fuel ratio is leaner than the stoichiometric ratio, and in the rich injection mode, air-fuel ratio is richer than the stoichiometric ratio. The rich gas emitted from the cylinders where the rich injection has been performed is thus allowed to flow through a different catalyst region every time instead of flowing only through the same region.

    摘要翻译: 用于内燃机的快速催化剂预热控制装置在起动发动机之后的快速催化剂预热控制期间执行不规则的喷射抖动控制。 在不规则喷射抖动控制中,在稀燃喷射模式和浓喷射模式之间的每个燃料喷射到气缸(对于4缸发动机的每180°CA)之后,喷射模式将以不会发生丰富喷射的模式切换 对于相同的气缸(抖动循环= 540°CA,900°CA,1080°CA等)连续地进行。 在稀注模式中,喷射燃料使得空燃比比化学计量比更稀,而在浓喷射模式中,空燃比比化学计量比更浓。 因此,从进行富注入的气缸排出的富气体每次流过不同的催化剂区域,而不是仅流过同一区域。