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    • 1. 发明专利
    • Valve system for internal combustion engine
    • 内燃机用阀门系统
    • JP2013199933A
    • 2013-10-03
    • JP2013119587
    • 2013-06-06
    • Toyota Motor Corpトヨタ自動車株式会社
    • OGO TOMOYOSHIOGAWA TAKASHIITO KATSUHIROIWATA KAZUYASU
    • F02D13/02
    • Y02T10/18
    • PROBLEM TO BE SOLVED: To increase a scavenging amount of internal EGR gas as much as possible, in a valve system for an internal combustion engine scavenging internal EGR gas during a valve overlap period.SOLUTION: In a valve system for an internal combustion engine scavenging internal EGR gas during a valve overlap period by changing a working angle of an exhaust valve, a lift change rate when the exhaust valve is opened is increased, thereby increasing an exhaust pulsation cycle. In the case, since a period when an exhaust pressure exceeds an intake pressure during the valve overlap period is reduced or eliminated, an scavenging amount of internal EGR gas is increased.
    • 要解决的问题:为了在阀重叠期间清除内部EGR气体的内燃机的阀系统中尽可能地增加内部EGR气体的清除量。解决方案:在用于内燃机清扫的阀系统 通过改变排气门的工作角度,在阀重叠期间的内部EGR气体增加,排气门打开时的升程变化率增加,从而增加排气脉动循环。 在这种情况下,由于减少或消除了在气门重叠期间排气压力超过进气压力的时间段,所以内部EGR气体的清除量增加。
    • 2. 发明专利
    • Engine
    • 发动机
    • JP2012122360A
    • 2012-06-28
    • JP2010271957
    • 2010-12-06
    • Toyota Motor Corpトヨタ自動車株式会社
    • OGO TOMOYOSHIOGAWA TAKASHIITO KATSUHIROIWATA KAZUYASU
    • F01L1/08F01L1/34F02D13/02
    • Y02T10/18
    • PROBLEM TO BE SOLVED: To provide an engine for which a satisfactory buffer part and further satisfactory valve characteristics can be set when a valve gear is provided which can change the opening/closing timing of a second mechanical valve with respect to the opening/closing timing of a first mechanical valve, out of the first mechanical valve and the second mechanical valves that are a same kind of mechanical valves, provided for a combustion chamber.SOLUTION: The engine 50A includes a VVT 57 that can change the opening/closing timing of an intake valve 54B with respect to the opening/closing timing of an intake valve 54A out of the intake valves 54A, 54B provided in the combustion chamber E. A change rate of valve lift quantity in a first buffer part A1 out of the first valve characteristics F1 of the intake valve 54A is set to be slower than that of the valve lift quantity in a second buffer part A2 out of the second valve characteristics of the intake valve 54B.
    • 要解决的问题:提供一种发动机,当提供能够改变相对于开口的第二机械阀的打开/关闭正时的阀齿轮时,可以设置满意的缓冲部分和进一步令人满意的阀特性 第一机械阀的第一机械阀和作为燃烧室设置的相同种类的机械阀的第二机械阀的关闭正时。

      解决方案:发动机50A包括VVT 57,其能够相对于进气阀54A从设置在燃烧中的进气门54A,54B中的打开/关闭正时改变进气阀54B的打开/关闭正时 进气阀54A的第一阀特性F1中的第一缓冲部分A1中的气门升程量的变化率被设定为比第二缓冲部分A2中的第二缓冲部分A2中的气门升程量的变化率慢 进气阀54B的阀门特性。 版权所有(C)2012,JPO&INPIT

    • 3. 发明专利
    • Catalyst control device of internal combustion engine
    • 内燃机催化器控制装置
    • JP2011117461A
    • 2011-06-16
    • JP2011059005
    • 2011-03-17
    • Toyota Motor Corpトヨタ自動車株式会社
    • OGO TOMOYOSHINAKATANI KOICHIRO
    • F02D13/02
    • PROBLEM TO BE SOLVED: To provide a catalyst control device of an internal combustion engine that properly corrects catalyst temperature rise to external changes caused while catalyst temperature is rising.
      SOLUTION: The catalyst control device includes an exhaust variable valve gear that changes opening and closing periods of an exhaust valve. The catalyst control device executes the catalyst rise control for rising the catalyst based on a lead angle of the opening and closing period of the exhaust valve. When fuel residual amount is below a predetermined value, the opening and closing periods of the exhaust valve are corrected to an angle of lag so that an air-fuel ration of gas emitted from is prevented from being enriched.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种内燃机的催化剂控制装置,其适当地校正催化剂温度升高到催化剂温度升高时引起的外部变化。 解决方案:催化剂控制装置包括改变排气阀的打开和关闭时段的排气可变阀齿轮。 催化剂控制装置基于排气阀的开闭期间的前角执行催化剂上升控制,以使催化剂上升。 当燃料残留量低于预定值时,将排气门的打开和关闭时段校正为滞后角度,从而防止排出的气体的空气燃料比增浓。 版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Control device of internal combustion engine
    • 内燃机控制装置
    • JP2009209780A
    • 2009-09-17
    • JP2008053752
    • 2008-03-04
    • Toyota Motor Corpトヨタ自動車株式会社
    • ONO TOMOYUKITOMOTA AKITOSHIISHIYAMA SHINOBUNAKATANI KOICHIROOGO TOMOYOSHIITO KATSUHIRO
    • F02D23/00F02B37/00F02B37/24F02D13/02F02D23/02F02D43/00
    • Y02T10/144Y02T10/18
    • PROBLEM TO BE SOLVED: To effectively increase torque by appropriately utilizing an exhaust blow down effect when a request for increasing the torque is issued, in an internal combustion engine provided with a variable valve train capable of changing a valve overlap period and a variable nozzle type turbo supercharger, about a control device of the internal combustion engine. SOLUTION: In the case that the request for increasing the torque is issued, firstly, a variable nozzle 22c is controlled to be fully closed without providing the valve overlap period. Then, in the case of determining that the torque is risen to close to a maximum torque curve (near a triangle mark) which can be output while the valve overlap period is not provided, a variable nozzle aperture is gradually opened to an aperture for an optimum turbo efficiency and the valve overlap period is gradually extended to obtain the exhaust blow down effect. In this case, post injection is executed to additionally provide a turbine 22a with exhaust energy. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过在发出增加扭矩的请求时适当地利用排气减压效果来有效地提高扭矩,在具有能够改变阀重叠期间的可变气门机构的内燃机中,以及 可变喷嘴型涡轮增压器,涉及内燃机的控制装置。 解决方案:在发出增加扭矩的请求的情况下,首先,将可变喷嘴22c控制为完全关闭,而不设置阀重叠周期。 然后,在确定扭矩上升到接近可以在没有设置阀重叠周期的情况下输出的最大扭矩曲线(靠近三角形标记)的情况下,可变喷嘴孔径逐渐向开口开口 最佳涡轮效率和阀重叠时间逐渐延长,以获得排气效果。 在这种情况下,执行后喷射以向涡轮机22a另外提供排气能量。 版权所有(C)2009,JPO&INPIT
    • 7. 发明专利
    • Control device for internal combustion engine
    • 内燃机控制装置
    • JP2009068450A
    • 2009-04-02
    • JP2007239645
    • 2007-09-14
    • Toyota Motor Corpトヨタ自動車株式会社
    • OGO TOMOYOSHITOMOTA AKITOSHIISHIYAMA SHINOBUONO TOMOYUKINAKATANI KOICHIROITO KATSUHIRONAKAGAWA MASAYOSHIHISATAKA YOSHIHIRO
    • F02D13/02F02D23/00
    • Y02T10/144
    • PROBLEM TO BE SOLVED: To surely avoid surge of a turbocharger in relation to a control device for an internal combustion engine.
      SOLUTION: In the internal combustion engine provided with the turbocharger and an exhaust variable valve gear capable of varying at least open timing of an exhaust valve, filling efficiency improving control improving filling efficiency by using scavenging effect is executed by changing exhaust valve opening timing so as to make a minimum point of pulsation of exhaust port pressure coincide with a valve overlap period during which exhaust valve opening period and intake valve opening period overlap during heavy load operation. When it is detected that it is under a condition where effect of filling efficiency improving control declines, rise of supercharging pressure is suppressed during execution of filling efficiency improving control.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了确保避免涡轮增压器相对于内燃机的控制装置的浪涌。 解决方案:在具有涡轮增压器的内燃机和能够至少改变排气门的开启正时的排气可变气门齿轮的情况下,通过改变排气门开度执行填充效率提高控制,通过使用清除效果来提高灌装效率 使排气口压力的最小脉动点与重负荷运转时排气门打开期间和进气阀打开期间重叠的阀重叠期间一致。 当检测到处于填充效率改善控制的效果下降的情况下,在执行填充效率改善控制期间抑制了增压压力的上升。 版权所有(C)2009,JPO&INPIT
    • 9. 发明专利
    • Diesel engine
    • 柴油发动机
    • JP2008274897A
    • 2008-11-13
    • JP2007122142
    • 2007-05-07
    • Toyota Motor Corpトヨタ自動車株式会社
    • OGO TOMOYOSHITOMOTA AKITOSHIISHIYAMA SHINOBUONO TOMOYUKINAKATANI KOICHIROHISATAKA YOSHIHIRO
    • F02D13/02F02D41/04
    • PROBLEM TO BE SOLVED: To reduce HC emission and reduce fuel consumption with respect to a diesel engine.
      SOLUTION: The diesel engine 10 is provided with: a first intake valve 14a; a second intake valve 14b; a first intake port communicating to the first intake valve 14a; a second intake port communicating to the second intake valve 14b; and an intake valve control means controlling operation of both intake valves to close the second intake valve 14b after making part of air in a cylinder flow reversely to the second intake port through the second intake valve 14b with accompanying rise of a piston 18 after closing the first intake valve 14a in a predetermined operation region. The independent swirl ratio of the second intake port is larger than the independent swirl ratio of the first intake port.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:相对于柴油发动机减少HC排放并降低燃料消耗。 解决方案:柴油发动机10设置有:第一进气门14a; 第二进气阀14b; 与第一进气门14a连通的第一进气口; 与第二进气门14b连通的第二进气口; 以及进气阀控制装置,用于控制两个进气门的操作,以在气缸中的一部分空气通过第二进气门14b与第二进气口反向流动以在关闭第二进气门14b之后随着活塞18的上升而关闭第二进气门14b 第一进气门14a处于预定的操作区域。 第二进气口的独立涡流比大于第一进气口的独立涡流比。 版权所有(C)2009,JPO&INPIT