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    • 1. 发明授权
    • Engine revolution control apparatus having overspeed governing capability
    • 具有超速控制能力的发动机转速控制装置
    • US06758189B2
    • 2004-07-06
    • US10309008
    • 2002-12-04
    • Mamoru UrakiSumio SatoTomoya KonoHajime Shogase
    • Mamoru UrakiSumio SatoTomoya KonoHajime Shogase
    • F02D100
    • B63H11/08F02D31/006F02D41/045
    • When a large load is exerted during restraint control of an engine of a jet propulsion boat, the drop of the engine revolution frequency causes a feeling of harsh braking. An engine revolution frequency control apparatus provided to prevent this problem includes a engine revolution frequency detector for detecting an engine revolution frequency, and threshold value setting units for setting first and second engine revolution frequency threshold values. The second threshold value is set to be higher than the first threshold value. An engine control unit includes an overspeed governing capability that starts restraint control for restraining rotation when the engine revolution frequency detected by the engine revolution frequency detector is more than said first threshold value when the engine is accelerating, and terminates restraint control when the engine revolution frequency is less than a second thresholds value during deceleration.
    • 当在喷射推进船的发动机的限制控制期间施加大的负载时,发动机转速的下降引起严酷制动的感觉。 用于防止这个问题的发动机转速控制装置包括用于检测发动机转速的发动机转速检测器和用于设定第一和第二发动机转数的频率阈值的阈值设定单元。 将第二阈值设定为高于第一阈值。 发动机控制单元包括超速控制能力,当发动机加速时,当由发动机转速检测器检测到的发动机转速大于所述第一阈值时,开始抑制旋转的约束控制,并且当发动机转速为 在减速期间小于第二个阈值。
    • 2. 发明授权
    • Jet propulsion boat
    • 喷气推进船
    • US06783408B2
    • 2004-08-31
    • US10351519
    • 2003-01-27
    • Mamoru UrakiTakao KochiTomoya KonoHajime Shogase
    • Mamoru UrakiTakao KochiTomoya KonoHajime Shogase
    • B63H2300
    • B63B35/731B63H21/213
    • A controller that executes engine output control that a throttle is closed when a boat is navigated at a predetermined speed or higher and the output of an engine is gradually increased up to predetermined output when a steering system is steered right or left at a predetermined angle or more is provided. Thus, an overshoot phenomenon that the engine speed is held at a predetermined engine speed after the engine speed once increases up to the predetermined engine speed or higher when the engine speed is increased in deceleration can be avoided. As a result, the body of the boat can be prevented from sliding laterally to a great extent at the beginning of turning and the turning performance of the body can be enhanced.
    • 执行发动机输出控制的控制器,当以预定速度或更高速度导航船舶时,节气门关闭,并且当转向系统以预定角度向右或向左转向时,发动机的输出逐渐增加到预定输出;或者 提供更多。 因此,可以避免发动机转速在发动机转速一旦增加到预定的发动机转速或更高时在发动机转速减速增加时将发动机转速保持在预定发动机转速的过冲现象。 结果,可以防止在转弯开始时船的主体在很大程度上横向滑动,并且能够提高车身的转弯性能。
    • 6. 发明申请
    • Air-fuel ratio feedback control apparatus for engines
    • 发动机空燃比反馈控制装置
    • US20060150962A1
    • 2006-07-13
    • US11315256
    • 2005-12-23
    • Mamoru UrakiRyutaro YamazakiTatsuo HayashiTomoya KonoTakeru Abe
    • Mamoru UrakiRyutaro YamazakiTatsuo HayashiTomoya KonoTakeru Abe
    • F02D41/14
    • F02D41/1456F02D41/1479F02D41/1484F02D41/1489F02D2041/2048
    • An air-fuel ratio setting section sets a target air-fuel ratio KCMD according to the conditions of an engine. An air-fuel ratio correction coefficient calculating section calculates an air-fuel ratio correction coefficient KAF for controlling the air-fuel ratio wherein a detected air-fuel ratio KACT detected by a LAF sensor is converged to the target air-fuel ratio KCMD. A lower limit section constrains the air-fuel ratio correction coefficient KAF so as not to underrun the lower limit value. An upper limit section constrains the air-fuel ratio correction coefficient KAF so as not to exceed the upper limit value. A basic fuel injection time determining section calculates a basic fuel injection time TIM. A fuel injection time calculating section calculates a fuel injection time TOUT based on the target air-fuel ratio KCMD, the air-fuel ratio correction coefficient KAF, the basic fuel injection time TIM or the like, and various engine parameters.
    • 空燃比设定部根据发动机的条件设定目标空燃比KCMD。 空燃比校正系数计算部分计算用于控制由LAF传感器检测到的检测空燃比KACT会聚到目标空燃比KCMD的空燃比的空燃比校正系数KAF。 下限部限制空燃比修正系数KAF,以便不低于下限值。 上限部分将空燃比校正系数KAF限制为不超过上限值。 基本燃料喷射时间确定部计算基本燃料喷射时间TIM。 燃料喷射时间计算部分基于目标空燃比KCMD,空燃比校正系数KAF,基本燃料喷射时间TIM等以及各种发动机参数来计算燃料喷射时间TOUT。