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    • 53. 发明公开
    • OUTBOARD MOTOR
    • 舷外马达
    • EP3064723A1
    • 2016-09-07
    • EP16157994.1
    • 2016-03-01
    • Yamaha Hatsudoki Kabushiki Kaisha
    • NAKAYAMA, KoichiNOSE, Yukinori
    • F01N3/04F01N3/10F01N13/00F01N13/10F01N13/18
    • F01N13/004F01N3/043F01N3/10F01N13/107F01N13/1827F01N13/1855F01N2450/24F01N2590/021Y02T10/20
    • An outboard motor (6) includes an exhaust passage (22) configured to discharge exhaust gases generated in a V-type engine (7) into water from an exhaust opening (21). The exhaust passage (22) includes a plurality of first branch passages (66) and a plurality of second branch passages (64) that are connected to the plurality of cylinders (31) and disposed inside a V-shaped line, a first upstream collecting passage (67) connected to each of the plurality of first branch passages (66), a second upstream collecting passage (65) connected to each of the plurality of second branch passages (64), and a downstream collecting passage (68) connected to the first upstream collecting passage (67) and the second upstream collecting passage (65). A portion from an upstream end (68u) of the downstream collecting passage (68) to a downstream end (68d) of the downstream collecting passage (68) is disposed outside cylinder heads (37).
    • 舷外机(6)具备排气通路(22),该排气通路(22)将从V型发动机(7)产生的废气从排气口(21)排出到水中。 排气通路22包括与多个气缸31连接且配置在V字线内的多个第一分支通路66和多个第二分支通路64, 与所述多个第一分支通路中的每一个连接的第二上游收集通路;与所述多个第二分支通路中的每一个连接的第二上游收集通路;以及下游收集通路, 第一上游收集通道67和第二上游收集通道65。 从下游侧集合通路68的上游端68u到下游侧集合通路68的下游端68d的部分配置在汽缸盖37的外侧。
    • 60. 发明公开
    • INTAKE A/F CONTROL DEVICE OF OUTBOARD ENGINE
    • KONTROLLVORRICHTUNGFÜRDIE LUFT / BRENNSTOFFZUFUHR EINES AUSSENBORDMOTORS
    • EP1101927A1
    • 2001-05-23
    • EP99933249.7
    • 1999-08-03
    • Honda Giken Kogyo Kabushiki Kaisha
    • YOSHIDA, HiroyukiKAWASAKI, ToyokazuFUKUDA, Yoshihiko
    • F02M25/07F01N3/28F02D41/14F02D43/00F02D45/00
    • F02M23/04F01N13/008F01N2590/021F02B61/045F02D35/0061F02D41/1454F02D41/1456F02M7/24Y02T10/146
    • In an engine intake A/F ratio control system in an outboard engine system, a secondary air passage (P) for supplying secondary air for regulating the A/F ratio of an air-fuel mixture is connected to a carburetor (33) in an intake system of an engine (E), and a duty control valve (68) is connected to the secondary air passage (P). A duty control unit (92) is connected to the duty control valve (68) for controlling the duty ratio of a pulse applied to a coil (76) of the duty control valve (68), and an LAF sensor (94) is mounted to an exhaust system for detecting an A/F ratio of an exhaust gas to input a detection signal proportional to the A/F ratio of the exhaust gas to the duty control unit (92). Thus, in any of a case when the tolerance of the purifying rate of the catalytic converter is set relatively widely with an engine output taken into consideration to a certain extent, and a case when the set range is shifted to a rich side of the A/R ratio with the engine output taken into serious consideration, the A/F ratio of the exhaust gas can be controlled properly to a desired target value.
    • 在舷外发动机系统的发动机进气A / F比控制系统中,将用于调节空气 - 燃料混合物的A / F比的二次空气的二次空气通路(P)连接到化油器(33) 发动机(E)的进气系统和作业控制阀(68)连接到二次空气通路(P)。 负载控制单元(92)连接到占空比控制阀(68),用于控制施加到占空比控制阀(68)的线圈(76)的脉冲的占空比,并且安装LAF传感器(94) 涉及一种用于检测排气的A / F比以输出与废气的A / F比与占空比控制单元(92)成比例的检测信号的排气系统。 因此,在一定程度上考虑到发动机输出的情况下,催化转化器的净化率的公差设定得相对广泛的情况,以及设定范围向A的浓侧偏移的情况 / R比与引擎输出考虑在内,可以将废气的A / F比适当地控制到期望的目标值。