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    • 3. 发明专利
    • Spark ignition engine with supercharger
    • 火花点火发动机与SUPERCHARGER
    • JP2012246777A
    • 2012-12-13
    • JP2011116853
    • 2011-05-25
    • Mazda Motor Corpマツダ株式会社
    • OTA KANEYUKIIWAI KOHEINOO YOSHINAOYAMAGATA NAOYUKINAKAMURA MITSUOHAYATA MITSUNORITSUJITA SHUHEIOBA SHUJISOMEI NOBUHIROFUJII MOTOKIMI
    • F02D23/00F02B3/04F02D41/02F02M25/07F02M51/06
    • Y02T10/128Y02T10/144
    • PROBLEM TO BE SOLVED: To properly continue combustion having a high thermal efficiency and superior emission performance up to a high-load region.SOLUTION: In a supercharging HCCI mode which is selected in the high-load region at least at the warmup of an engine, an air excess rate λ of mixed air is set to λ≥2 by introducing a large volume of air into a combustion chamber 5 by the supercharging of a supercharger 35, and there is performed control for combusting the lean mixed air of the λ≥2 by self ignition from the vicinity of a top dead center. Alternatively, in a retard SI mode which is selected in an operation region at the side of a high load rather than the supercharging HCCI mode, the air excess rate λ of the mixed air is set to λ=1, and by executing fuel injection from an injector 10 at injection pressure not lower than 20 MPa and spark ignition by an ignition plug 11 within a period up to a swelling-stroke initial period from a compression-stroke rear period, there is performed control for rapidly combusting the mixed air by the propagation of flames after passing the compression top dead center for a prescribed time.
    • 要解决的问题:适当地继续燃烧具有高热效率和优异的排放性能直到高负荷区域。

      解决方案:在至少在发动机预热的高负载区域中选择的增压HCCI模式中,通过将大量空气引入到混合空气的空气过剩率λ被设定为λ≥2 通过增压器35的增压进行燃烧室5,进行从上止点附近通过自点火燃烧λ≥2的稀混合空气的控制。 或者,在高负载侧而不是增压型HCCI模式的操作区域中选择的延迟SI模式中,将混合空气的空气过剩率λ设定为λ= 1,并且通过执行从 注射压力不低于20MPa的注射器10和在从压缩冲程后期到达膨胀行程初始时段的时间段内通过火花塞11火花点火,进行控制以使混合空气迅速燃烧, 通过压缩上止点经过规定时间后火焰传播。 版权所有(C)2013,JPO&INPIT

    • 4. 发明专利
    • Gasoline engine
    • 汽油发动机
    • JP2012241591A
    • 2012-12-10
    • JP2011111400
    • 2011-05-18
    • Mazda Motor Corpマツダ株式会社
    • IWAI KOHEIYAMAKAWA MASANAOOTA KANEYUKINAGATSU KAZUHIRONOO YOSHINAOYOUSO TAKASHIFUJIKAWA TATSUYAUCHIDA KENJIOBA SHUJITSUJITA SHUHEI
    • F02D41/38F02B11/00F02B23/10F02D41/40F02D43/00F02D45/00F02P5/15
    • Y02T10/125
    • PROBLEM TO BE SOLVED: To achieve proper and continuous compression self-ignition combustion in a wide load range without increasing combustion noise and soot.SOLUTION: Control is executed to perform self-ignition combustion of the fuel injected collectively before the middle term of the compression stroke in a first operation range A1 including at least a low-rotation range and a low-load range in a warm condition of an engine, whereas control is executed to perform self-ignition combustion of the fuel injected at a plurality of times in a second operation range A2 with a larger load than the first operation range A1. The fuel injection performed in the second operation range A2 includes pre-stage injection P1 where the fuel is injected at the timing when an air-fuel mixture X1 is present unevenly at the outer periphery in the combustion chamber 6 before the compression top dead center, and latter-stage injection P2 where the fuel is injected at the timing when an air-fuel mixture X2 is present unevenly at the central part in the combustion chamber 6 after the pre-stage injection P1 and before termination of combustion of the fuel injected in P1.
    • 要解决的问题:在宽负载范围内实现适当且连续的压缩自点燃燃烧,而不增加燃烧噪声和烟尘。

      解决方案:执行控制以在包括至少在低温范围和低负载范围内的至少第一操作范围A1中的在压缩行程中期之前共同喷射的燃料进行自点火燃烧 发动机的状态,而执行控制以在具有比第一操作范围A1更大的负载的第二操作范围A2中多次喷射的燃料进行自点燃燃烧。 在第二操作范围A2中执行的燃料喷射包括在空气燃料混合物X1不均匀地存在于压缩上止点之前的燃烧室6的外周的时刻喷射燃料的前级喷射P1, 以及在空燃混合物X2不均匀地存在于燃料室6的中间部分的情况下,在燃料室6的前期喷射P1之后,以及燃料喷射结束燃烧之前的时刻喷射燃料的后期喷射P2 P1。 版权所有(C)2013,JPO&INPIT

    • 5. 发明专利
    • Gasoline engine
    • 汽油发动机
    • JP2012215095A
    • 2012-11-08
    • JP2011080041
    • 2011-03-31
    • Mazda Motor Corpマツダ株式会社
    • NOO YOSHINAOYAMAKAWA MASANAOIWAI KOHEINAGATSU KAZUHIROYOUSO TAKASHIOTA KANEYUKIHIDAKA MASATOSHINAGANO TAKAAKIKAGEYAMA AKIRAABE HIROAKI
    • F02B23/10F02B11/00F02D19/08F02D19/10F02D41/04F02F1/42F02F3/26F02M25/00F02M61/10F02M61/14
    • Y02T10/12Y02T10/125
    • PROBLEM TO BE SOLVED: To provide a gasoline engine that can enhance thermal efficiency.SOLUTION: The ceiling 60 of a combustion chamber 6 is made to have a cone shape that leans toward the crest surface side of a piston 5 as extending toward the outside in the radial direction from the cone top located at the center in the radial direction of the ceiling, while setting a geometrical compression ratio of a cylinder 2 to 14 or more. The crest surface of the piston 5 is composed of a cavity 40 and a base surface 41, the cavity being dented at the center of the crest surface to the direction distant from the ceiling 60 of the combustion chamber 6, having an inner peripheral surface 40b that curves to the dented direction, the base surface leaning to the direction distant from the ceiling 60 of the combustion chamber 6 as extending in parallel to the ceiling 60 of the combustion chamber 6 toward the outside in the radial direction from the open periphery 40a of the cavity 40. The tip of an injector 21 is located near the top of the ceiling 60 of the combustion chamber 6 while facing into the combustion chamber 6 so that the fuel injected through each nozzle 21a spreads in an outer direction in the radial direction as getting closer to the crest surface of the piston 5 from the top of the ceiling 60 of the combustion chamber 6.
    • 要解决的问题:提供可以提高热效率的汽油发动机。 解决方案:燃烧室6的天花板60被制成具有从活塞5的顶部表面侧朝向径向外侧延伸的圆锥形状,其位于位于中心的锥形顶部 同时将气缸2的几何压缩比设定为14以上。 活塞5的顶面由空腔40和底面41构成,空腔在顶表面的中心凹陷到远离燃烧室6的天花板60的方向,具有内周面40b 其弯曲到凹陷方向,基底表面倾斜到远离燃烧室6的天花板60的方向,其平均于燃烧室6的天花板60从径向方向的外侧延伸, 空腔40.喷射器21的前端位于燃烧室6的天花板60的顶部附近,同时面向燃烧室6,使得通过每个喷嘴21a喷射的燃料沿径向沿外侧方向扩散为 从燃烧室6的天花板60的顶部越靠近活塞5的顶部表面。(C)2013,JPO&INPIT
    • 7. 发明专利
    • Control device of spark ignition type gasoline engine
    • 火花点火型汽油发动机的控制装置
    • JP2012207631A
    • 2012-10-25
    • JP2011075347
    • 2011-03-30
    • Mazda Motor Corpマツダ株式会社
    • NAGATSU KAZUHIROYAMAKAWA MASANAOOTA KANEYUKIIWAI KOHEINOO YOSHINAOKAMINAGA TAKASHICHO TAKESHI
    • F02D41/04F02D21/08F02D41/20F02D41/38
    • F02D41/3094
    • PROBLEM TO BE SOLVED: To properly perform compression self-ignition combustion in a low-load range of an engine, and to effectively prevent the generation of abnormal combustion in a high-load range of the engine.SOLUTION: This spark ignition type gasoline engine comprises a port fuel injection means 57 which injects fuel to an intake port 16, and an in-cylinder fuel injection means 62 which injects the fuel to the center of a combustion chamber 19. The engine also comprises a control means 10 which self-ignites the mixture air, produces mixture air which is leaner and more homogeneous than a theoretical air-fuel ratio by injecting fuel to the intake port 16 in an intake stroke by the port fuel injection means 57 in the low-load range of the engine, produces mixture air which is richer than that in the low-load range by injecting the fuel to a combustion chamber 19 in a period from the compression stroke to an initial stage of an expansion stroke at fuel pressure not lower than 30 MPa from the in-cylinder fuel injection means 62 in the higher-load range of the engine, and performs control so that the mixture air is ignited in the vicinity of a compression upper dead point and rapidly combusted at timing delayed from the compression upper dead point by a prescribed period.
    • 要解决的问题:为了在发动机的低负载范围内适当地进行压缩自点燃燃烧,并且有效地防止在发动机的高负荷范围内产生异常燃烧。 该火花点火式汽油发动机包括将燃料喷射到进气口16的端口燃料喷射装置57和将燃料喷射到燃烧室19的中心的缸内燃料喷射装置62。 发动机还包括控制装置10,该控制装置10通过端口燃料喷射装置57在进气冲程中将燃料喷射到进气口16而自动点燃混合空气,产生比理论空燃比更浓和更均匀的混合空气 在发动机的低负载范围内,通过在从压缩行程到燃料的膨胀冲程的初始阶段将燃料喷射到燃烧室19,产生比低负载范围更浓的混合空气 在发动机的高负载范围内的缸内燃料喷射装置62的压力不低于30MPa,并且进行控制,使得混合空气在压缩上死点附近被点燃并迅速燃烧 在从压缩上死点延迟预定时间的定时处。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Gasoline engine
    • 汽油发动机
    • JP2012207627A
    • 2012-10-25
    • JP2011075201
    • 2011-03-30
    • Mazda Motor Corpマツダ株式会社
    • YAMAGATA NAOYUKIYAMAKAWA MASANAONAGATSU KAZUHIROIWAI KOHEIOTA KANEYUKIARAKI KEIJI
    • F02D13/02F01N13/10F02B27/04F02D41/02
    • Y02T10/146
    • PROBLEM TO BE SOLVED: To provide a gasoline engine capable of achieving compression self ignition combustion and promoting activity of a catalyser by raising a geometrical compression ratio while avoiding abnormal combustion.SOLUTION: Negative pressure is generated in an exhaust port 10 connected to the other neighboring independent exhaust passage 52 by ejector effect as a shape in which the downstream side thereof makes the downstream end of the independent exhaust passage 52 connected to the exhaust port 10 a smaller flow passage area. In a low load and low speed region, a self ignition combustion mode in which mixture burns by self ignition is executed, and in a high load and low speed region, a valve opening period of an intake valve 11 and a valve opening period of an exhaust valve 12 are overlapped in an overlapped period. The overlapped period of one cylinder 2 among cylinders in continuous exhaust order is overlapped on an exhaust valve 12 opening period of the other cylinder 2.
    • 要解决的问题:提供能够通过提高几何压缩比同时避免异常燃烧来实现压缩自点火燃烧和促进催化剂的活性的汽油发动机。 解决方案:通过喷射器作用连接到另一相邻的独立排气通道52的排气口10中产生负压,作为其下游侧使独立排气通道52的下游端连接到排气口的形状 10较小的流通面积。 在低负荷低速区域中,通过自点火进行混合燃烧的自燃燃烧模式,在高负荷低速区域中,进气门11的阀打开期间和阀开度期间 排气阀12在重叠的时间段内重叠。 连续排气的气缸中的一个气缸2的重叠周期在另一气缸2的排气阀12的打开时段上重叠。(C)2013,JPO&INPIT
    • 9. 发明专利
    • Spark ignition engine control device
    • 火花点火发动机控制装置
    • JP2012246784A
    • 2012-12-13
    • JP2011116959
    • 2011-05-25
    • Mazda Motor Corpマツダ株式会社
    • NAGATSU KAZUHIROYAMAKAWA MASANAOOTA KANEYUKIIWAI KOHEINOO YOSHINAOKAMINAGA TAKASHICHO TAKESHI
    • F02D41/04F02D21/08F02D41/34
    • PROBLEM TO BE SOLVED: To expand an operation region for performing compression ignition combustion, in a spark ignition engine control device that executes the compression ignition combustion.SOLUTION: When an engine body 1 is in a prescribed operation region, a controller (PCM 10) operates the engine body 1 in a compression ignition mode at which mixed air in an air cylinder is compression-ignited. Furthermore, in an operation region having a prescribed load or larger in the compression ignition mode, the controller sets a time of main injection by a fuel injection valve so that a combustion time of the compression ignition combustion may be retarded so as to succeed to a compression top center, and executes pre-stage injection prior to the main injection.
    • 要解决的问题:在执行压缩点火燃烧的火花点火发动机控制装置中,扩大用于进行压缩点火燃烧的操作区域。 解决方案:当发动机主体1处于规定的操作区域时,控制器(PCM10)以压缩点火模式操作发动机主体1,在压缩点火模式下,气缸中的混合空气被压缩点燃。 此外,在压缩点火模式下具有规定负载或更大的操作区域中,控制器通过燃料喷射阀设定主喷射时间,使得可以延迟压缩点火燃烧的燃烧时间,从而能够继续 压缩顶部中心,并且在主喷射之前执行预阶段喷射。 版权所有(C)2013,JPO&INPIT
    • 10. 发明专利
    • Spark-ignition type gasoline engine
    • 火花点火型汽油发动机
    • JP2012241590A
    • 2012-12-10
    • JP2011111399
    • 2011-05-18
    • Mazda Motor Corpマツダ株式会社
    • NAGATSU KAZUHIROYAMAKAWA MASANAOIWAI KOHEIYOUSO TAKASHINOO YOSHINAOOTA KANEYUKIHIDAKA MASATOSHIKAMINAGA TAKASHINAGANO TAKAAKIKAGEYAMA AKIRA
    • F02D41/38F02D41/40F02D43/00F02D45/00F02P5/15
    • PROBLEM TO BE SOLVED: To rapidly make temperature conditions suitable for CI combustion while actualizing proper CI combustion by an ignition assist.SOLUTION: In a specific operation region (A3) under a first temperature condition (warm period), fuel is injected from an injector 21 separately in pre-injection P1 and post-injection P2. In addition, the ignition assist by injection of a small amount of fuel Pa and spark ignition S immediately after that takes place between the pre-injection P1 and the post-injection P2, whereby the CI combustion based on the respective injections P1 and P2 starts sequentially from the vicinity of the compression top dead center after the ignition assist. On the other hand, in a specific operation region (B2) under a second temperature condition (semi-warm period) lower than the first temperature condition, the ignition assist takes place prior to the pre-injection P1, whereby the CI combustion based on the respective injections P1 and P2 starts sequentially from the vicinity of the compression top dead center.
    • 要解决的问题:通过点火辅助实现适当的CI燃烧,来快速地制备适合于CI燃烧的温度条件。 解决方案:在第一温度条件(暖期)的特定操作区域(A3)中,在预喷射P1和后喷射P2中分别从喷射器21喷射燃料。 此外,通过在预喷射P1和后喷射P2之间立即喷射少量燃料Pa和火花点火S,进行点火辅助,由此基于各喷射P1和P2的CI燃烧开始 在点火辅助之后从压缩上止点附近顺序地。 另一方面,在低于第一温度条件的第二温度条件(半暖期)的特定操作区域(B2)中,点火辅助在预喷射P1之前进行,由此基于 相应的喷射P1和P2从压缩上止点附近顺序地开始。 版权所有(C)2013,JPO&INPIT