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    • 2. 发明申请
    • SPARK-IGNITION ENGINE CONTROL METHOD AND SYSTEM
    • 火花点火发动机控制方法与系统
    • US20110239986A1
    • 2011-10-06
    • US13038156
    • 2011-03-01
    • Kouji SHISHIMENaoya MATSUOMikinori OHASHI
    • Kouji SHISHIMENaoya MATSUOMikinori OHASHI
    • F02P5/04
    • F02D41/401F02B2075/125F02D13/0238F02D13/0269F02D15/00F02D35/021F02D35/027F02D2200/025Y02T10/12Y02T10/123Y02T10/142Y02T10/44
    • When preignition is detected, and an engine speed is less than a predetermined value (Nex), an air/fuel ratio is enriched (S22), and then, when the preignition is detected even after enriching the air/fuel ratio, an effective compression ratio of an engine is reduced (S23), whereafter, when the preignition is detected even after reducing the effective compression ratio, a part of injection fuel is injected in a compression stroke (S24). On the other hand, when preignition is detected, and an engine speed is equal to or greater than the predetermined value (Nex), the air/fuel ratio is enriched (S31), and then, when the preignition is detected even after enriching the air/fuel ratio, a part of the fuel is injected in the compression stroke (S32). This makes it possible to effectively suppress the occurrence of preignition while maximally avoiding deterioration in emission performance and lowering in engine power output.
    • 当检测到预警,并且发动机转速小于预定值(Nex)时,空气/燃料比被浓缩(S22),然后,即使在浓缩空燃比之后也检测到预警,有效压缩 发动机的比例降低(S23),此后即使在降低有效压缩比之后也检测到预警,在压缩冲程中喷射一部分喷射燃料(S24)。 另一方面,当检测到预警,并且发动机转速等于或大于预定值(Nex)时,空燃比被富集(S31),然后,即使在浓缩之后也检测到预警 空燃比,在压缩冲程中喷射一部分燃料(S32)。 这使得可以有效地抑制预激发的发生,同时最大限度地避免发射性能的劣化和发动机功率输出的降低。
    • 3. 发明申请
    • METHOD AND DEVICE FOR CONTROLLING SPARK-IGNITION DIRECT INJECTION ENGINE
    • 用于控制火花点火直喷喷射发动机的方法和装置
    • US20120111302A1
    • 2012-05-10
    • US13284352
    • 2011-10-28
    • Kouji SHISHIMEJunsou SASAKIHideki OMORI
    • Kouji SHISHIMEJunsou SASAKIHideki OMORI
    • F02B3/02
    • F02D41/405F02P5/1514F02P5/152Y02T10/44Y02T10/46
    • A method for controlling an engine includes, when the engine is operating within a particular range with comparatively low engine speed and high load, setting an effective compression ratio of 10:1 or above, retarding ignition timing by a predetermined amount and retarding the ignition timing within a first, relatively low engine speed range more than within a second, higher engine speed range, setting an injection mode of an injection valve to divided injections performed at least twice in a period from an intake stroke to an earlier-half stage of a compression stroke, performing, within the first engine speed range, a final injection in the earlier-half stage of the compression stroke, and performing, within the second engine speed range, the final injection in a late stage of the intake stroke and at least one injection other than the final injection in a middle stage of the intake stroke.
    • 一种发动机的控制方法,在发动机在比较低的发动机转速和高负载的特定范围内运转的情况下,设定10:1以上的有效压缩比,延迟点火正时预定量并延迟点火正时 在第一个相对较低的发动机转速范围内超过第二个更高的发动机转速范围内,将喷射阀的喷射模式设定为从进气冲程至前一阶段的至少两次执行的分离喷射 压缩冲程,在第一发动机转速范围内,在压缩冲程的前半阶段执行最终喷射,并且在第二发动机转速范围内,在进气冲程的后期执行最终喷射,并且至少 在进气冲程的中间阶段进行一次注射,而不是最后一次注射。