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    • 3. 发明授权
    • Fuel injection control system for use in an internal combustion engine
    • 用于内燃机的燃油喷射控制系统
    • US5357928A
    • 1994-10-25
    • US12549
    • 1993-02-02
    • Masahito Ohtsuka
    • Masahito Ohtsuka
    • F02D37/02F02D41/00F02D41/02F02D41/34F02P5/04F02P5/15F02D43/00
    • F02D41/008F02D37/02F02D41/0255F02P5/045F02P5/1506F02P5/1512F02P5/1514Y02T10/26Y02T10/46
    • A fuel injection control system for use in an internal combustion engine having a catalyst in its exhaust path. Each cylinder is provided with a fuel injection valve for injecting fuel thereinto amounting to a reference injection quantity which is set according to a loaded state of the internal combustion engine. Each cylinder is also provided with a spark plug for producing spark ignition therein at each period of reference ignition timing which is established according to the loaded state of the internal combustion engine. The fuel injection control system is provided with a controller which controls the fuel injection valve such as to increase and decrease the reference fuel injection quantity by a different amount per cylinder without a change in the total of the reference fuel injection quantity, and which also varies this fuel increase and decrease according to the loaded state of the internal combustion engine. The controller further controls the spark plug such as to retard the reference ignition timing by an amount different from one cylinder to another, and varies this retardation according to the loaded state of the internal combustion engine. This control is effected when the internal combustion engine is in an operating state which conforms to predetermined conditions.
    • 一种用于内燃机的燃料喷射控制系统,该内燃机在其排气路径中具有催化剂。 每个气缸设有燃料喷射阀,用于将燃料喷射到根据内燃机的负载状态设定的基准喷射量。 每个气缸还设置有火花塞,用于在根据内燃机的负载状态建立的每个参考点火正时期间产生火花点火。 燃料喷射控制系统设置有控制器,其控制燃料喷射阀,以使参考燃料喷射量增加和减少不同量的每个气缸,而不改变参考燃料喷射量的总和,并且也改变 该燃料根据内燃机的负载状态而增加和减少。 控制器进一步控制火花塞,以将参考点火正时延迟不同于一个气缸的量,并根据内燃机的负载状态改变该延迟。 当内燃机处于符合预定条件的运行状态时,进行该控制。