Hexagonal cell honeycomb structure body
    3.
    发明申请
    Hexagonal cell honeycomb structure body 有权
    六角形蜂窝结构体

    公开(公告)号:US20070148406A1

    公开(公告)日:2007-06-28

    申请号:US11641888

    申请日:2006-12-20

    IPC分类号: B32B3/12

    摘要: A hexagonal cell honeycomb structure body has a plurality of hexagonal cells. Each hexagonal cell is surrounded by six cell walls in a hexagonal lattice shape. A R-shaped corner part of an approximate circular-arc shape is alternately formed at interior angle parts of the six cell walls forming each hexagonal cell. The three R-shaped corner parts are at the alternate internal corners of each hexagonal cell observed from a cross section of the axis direction of the hexagonal cell honeycomb structure body. A radius of curvature of each R-shaped corner part is larger than that of the interior corner part having no R-shaped corner part. The minimum radius of curvature of the R-shaped corner part is 2.8 to 5 times of a thickness of each hexagonal cell wall, namely within a range of 0.25 mm to 0.45 mm.

    摘要翻译: 六边形单元蜂窝结构体具有多个六边形单元。 每个六角形单元被六角格子形状的六个单元格壁围绕。 在形成每个六边形单元的六个单元壁的内角部分交替形成大致圆弧形的R形角部。 三角形的角部位于从六边形单元状蜂窝结构体的轴方向的截面观察的每个六边形单元的交替的内角。 每个R形角部的曲率半径大于没有R形角部的内角部的曲率半径。 R形角部的最小曲率半径是每个六边形孔壁的厚度的2.8〜5倍,即在0.25mm〜0.45mm的范围内。

    Fuel injection control system for a diesel engine
    4.
    发明授权
    Fuel injection control system for a diesel engine 失效
    柴油机燃油喷射控制系统

    公开(公告)号:US6016788A

    公开(公告)日:2000-01-25

    申请号:US109417

    申请日:1998-07-02

    摘要: In a fuel injection control system, a throttle valve is provided on the intake air passage of a diesel engine and an EGR control valve is provided for recycling a part of the engine exhaust gas to the intake air system of the engine. An engine control unit (ECU) controls the intake air amount of the engine to a value corresponding to the engine operating condition by adjusting the throttle valve and the EGR control valve. Further, the ECU detects the actual intake air amount by an airflow meter disposed at the inlet of the intake air passage and determines the maximum fuel injection amount based on the engine speed and the actual intake air amount. The maximum fuel injection amount is the maximum amount of the fuel which does not generate the exhaust smoke. By restricting the actual fuel injection amount so that the actual fuel injection amount does not exceed the maximum fuel injection amount, the generation of the exhaust smoke is prevented in transient operating conditions of the engine regardless of a delay in the response of the EGR control valve.

    摘要翻译: 在燃料喷射控制系统中,在柴油发动机的进气通道上设置有节流阀,并且设置有用于将发动机排气的一部分再循环到发动机的进气系统的EGR控制阀。 发动机控制单元(ECU)通过调节节流阀和EGR控制阀将发动机的进气量控制在与发动机运转状态对应的值。 此外,ECU通过设置在进气通道的入口处的气流计检测实际进气量,并且基于发动机速度和实际进气量来确定最大燃料喷射量。 最大燃料喷射量是不产生排气烟的燃料的最大量。 通过限制实际燃料喷射量使得实际燃料喷射量不超过最大燃料喷射量,在发动机的瞬态操作条件下防止排气烟的产生,而与EGR控制阀的响应延迟无关 。

    Exhaust gas purification device
    5.
    发明授权
    Exhaust gas purification device 失效
    废气净化装置

    公开(公告)号:US5987884A

    公开(公告)日:1999-11-23

    申请号:US95763

    申请日:1998-06-11

    摘要: According to the invention, there is provided an exhaust gas purification device for purifying an exhaust gas discharged from an engine having cylinders including first and second cylinders. An exhaust stroke in the first cylinder is carried out next to an exhaust stroke in the second cylinder. The exhaust gas purification device comprises exhaust branch passages which are connected to the cylinders, respectively. The exhaust branch passages include first and second exhaust branch passages which are connected to the first and second cylinders, respectively. The exhaust gas purification device comprises a common exhaust passage connected to the exhaust branch passages, a catalyst positioned in the common exhaust passage for purifying an exhaust gas, and an exhaust gas recirculation passage connected to the first exhaust branch passage. The exhaust gas recirculation passage introduces the exhaust gas from the first exhaust branch passage into an intake passage which is connected to the cylinders. According to the invention, a reducing agent is fed to only the second cylinder during the power or the exhaust stroke in the second cylinder to promote the purifying operation of the catalyst when the exhaust gas is introduced into the intake passage via the exhaust gas recirculation passage.

    摘要翻译: 根据本发明,提供了一种用于净化从具有包括第一和第二气缸的气缸的发动机排出的废气的排气净化装置。 在第二气缸中的排气冲程旁边执行第一气缸中的排气冲程。 废气净化装置包括分别连接到气缸的排气分支通道。 排气分支通道包括分别连接到第一和第二气缸的第一和第二排气分支通道。 废气净化装置包括连接到排气支路的公共排气通道,位于公共排气通道中用于净化废气的催化剂和连接到第一排气分支通道的废气再循环通道。 排气再循环通道将排气从第一排气分支通道引入连接到气缸的进气通道。 根据本发明,在第二气缸的动力或排气冲程期间,还原剂仅供给到第二气缸,以在排气通过排气再循环通道引入进气通道时促进催化剂的净化操作 。

    Fuel injecting device for an engine
    6.
    发明授权
    Fuel injecting device for an engine 失效
    发动机燃油喷射装置

    公开(公告)号:US5983630A

    公开(公告)日:1999-11-16

    申请号:US106269

    申请日:1998-06-29

    摘要: According to the present invention, there is provided a fuel injecting device for injecting fuel into a cylinder of an engine. A fuel injector injects a main fuel charge into the cylinder at a predetermined first timing, and the fuel injector injects additional fuel into the cylinder at a predetermined second timing which is different from the predetermined first timing. It is judged if an amount of fuel adhering to an inner wall of the cylinder is larger than a predetermined fuel amount when the fuel injector injects the additional fuel. The fuel injector inject the additional fuel such that an amount of fuel adhering to the inner wall of the cylinder becomes smaller than the predetermined fuel amount when it is judged that an amount of fuel adhering to the inner wall of the cylinder is larger than the predetermined fuel amount.

    摘要翻译: 根据本发明,提供了一种用于将燃料喷射到发动机气缸中的燃料喷射装置。 燃料喷射器在预定的第一定时将主燃料喷射器喷射到气缸中,并且燃料喷射器以与预定的第一定时不同的预定的第二定时将附加燃料喷射到气缸中。 当燃料喷射器喷射附加燃料时,判断附着在气缸内壁的燃料量是否大于预定燃料量。 燃料喷射器喷射附加燃料,使得当判断附着在气缸内壁上的燃料量大于预定燃料量时,附着在汽缸内壁上的燃料量变得小于预定燃料量 燃料量。

    Fuel injection control device for a direct injection type engine
    7.
    发明授权
    Fuel injection control device for a direct injection type engine 失效
    直喷式发动机燃油喷射控制装置

    公开(公告)号:US5839275A

    公开(公告)日:1998-11-24

    申请号:US911811

    申请日:1997-08-15

    摘要: A fuel injection control device for a direct injection type engine having an exhaust passage and a NO.sub.x catalyst arranged therein to purify NO.sub.x in exhaust gas discharged from the engine comprises fuel injectors for injecting fuel into a cylinder. The injecting operation of the fuel injectors is controlled to carry out a main fuel injection at the latest at the beginning of a power stroke of the engine. The injecting operation of the fuel injectors is controlled to carry out a sub fuel injection at one of a power stroke and an exhaust stroke of the engine after the main fuel injection is completed to increase an amount of hydrocarbon in the exhaust gas. The injecting operation of the fuel injectors is controlled to carry out an additional sub fuel injection after the main fuel injection is completed and before the sub fuel injection is carried out.

    摘要翻译: 一种用于直接喷射型发动机的燃料喷射控制装置,其具有布置在其中的用于净化从发动机排出的废气中的NOx的排气通道和NOx催化剂的直接喷射型发动机,其包括用于将燃料喷射到气缸中的燃料喷射器。 燃料喷射器的喷射操作被控制为在发动机的动力冲程开始时最迟执行主燃料喷射。 控制燃料喷射器的喷射操作,以在主燃料喷射完成之后执行在发动机的动力冲程和排气冲程之一的次燃料喷射以增加废气中的烃的量。 控制燃料喷射器的喷射操作,以在主燃料喷射完成之后并且执行次燃料喷射之前执行附加的副燃料喷射。

    Exhaust gas purification device for an engine
    8.
    发明授权
    Exhaust gas purification device for an engine 失效
    发动机废气净化装置

    公开(公告)号:US5941067A

    公开(公告)日:1999-08-24

    申请号:US951783

    申请日:1997-10-16

    摘要: An exhaust gas purification device, for an engine having an exhaust passage, said device comprising a catalyst arranged in the exhaust passage for purifying NO.sub.x with a reducing agent. A purification ratio of the NO.sub.x by said catalyst becomes more than a predetermined ratio when a temperature of said catalyst is within a predetermined temperature range. A predetermined amount of a reducing agent is fed to said catalyst. An amount of the reducing agent to be fed is increased with respect to the predetermined amount when a temperature of an upstream end of the catalyst is lower than a lowest value of the predetermined temperature range and a temperature of a downstream end of the catalyst is higher than the lowest value.

    摘要翻译: 一种用于具有排气通道的发动机的废气净化装置,所述装置包括布置在用于通过还原剂净化NOx的排气通道中的催化剂。 当所述催化剂的温度在预定的温度范围内时,所述催化剂的NOx的净化比率大于预定的比例。 将预定量的还原剂加入到所述催化剂中。 当催化剂的上游端的温度低于预定温度范围的最低值并且催化剂的下游端的温度较高时,待进料的还原剂的量相对于预定量增加 比最低值。

    Hexagonal cell honeycomb structure body
    10.
    发明授权
    Hexagonal cell honeycomb structure body 有权
    六角形蜂窝结构体

    公开(公告)号:US07504146B2

    公开(公告)日:2009-03-17

    申请号:US11641888

    申请日:2006-12-20

    IPC分类号: B32B3/12

    摘要: A hexagonal cell honeycomb structure body has a plurality of hexagonal cells. Each hexagonal cell is surrounded by six cell walls in a hexagonal lattice shape. A R-shaped corner part of an approximate circular-arc shape is alternately formed at interior angle parts of the six cell walls forming each hexagonal cell. The three R-shaped corner parts are at the alternate internal corners of each hexagonal cell observed from a cross section of the axis direction of the hexagonal cell honeycomb structure body. A radius of curvature of each R-shaped corner part is larger than that of the interior corner part having no R-shaped corner part. The minimum radius of curvature of the R-shaped corner part is 2.8 to 5 times of a thickness of each hexagonal cell wall, namely within a range of 0.25 mm to 0.45 mm.

    摘要翻译: 六边形单元蜂窝结构体具有多个六边形单元。 每个六角形单元被六角格子形状的六个单元格壁围绕。 在形成每个六边形单元的六个单元壁的内角部分交替形成大致圆弧形的R形角部。 三角形的角部位于从六边形单元状蜂窝结构体的轴方向的截面观察的每个六边形单元的交替的内角。 每个R形角部的曲率半径大于没有R形角部的内角部的曲率半径。 R形角部的最小曲率半径是每个六边形孔壁的厚度的2.8〜5倍,即在0.25mm〜0.45mm的范围内。