用于发动机系统的燃料喷射的方法和装置

Method and apparatus for fuel injection of engine system

Abstract

The invention discloses a method and apparatus for fuel injection of an engine system. The method for fuel injection of an engine system may include detecting driving information, including a combustion pressure in a combustion chamber, a heat generation amount in the combustion chamber, a crank angle, and a pressure/temperature/air amount of an intake manifold and an exhaust manifold, setting a fuel amount and injection timing with respect to a pilot injection as map data from an internal temperature, determining whether a maximum combustion pressure change rate is greater than a predetermined pressure change rate, determining generation timing of the maximum combustion pressure change rate, when the maximum combustion pressure change rate is greater than the predetermined pressure change rate, and decreasing a fuel amount of the pilot injection when the maximum combustion pressure change rate is generated during the pilot injection.
本发明公开了一种用于发动机系统的燃料喷射的方法和装置,其中,用于发动机系统的燃料喷射的方法可以包括:检测驱动信息,所述驱动信息包括燃烧室中的燃烧压力、燃烧室中的热产生量、曲柄角度、以及进气歧管压力/温度/空气量和排气歧管的压力/温度/空气量;根据内部温度将关于预喷射的燃料量和喷射正时设定为映射数据;确定最大燃烧压力变化速率是否大于预定压力变化速率;在最大燃烧压力变化速率大于预定压力变化速率的情况下,确定最大燃烧压力变化速率的发生正时;以及在预喷射期间产生最大燃烧压力变化速率的情况下,降低预喷射的燃料量。

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