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    • 9. 发明公开
    • METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE
    • VERFAHREN ZUR STEUERUNG EINES VERBRENNUNGSMOTORS
    • EP3054132A1
    • 2016-08-10
    • EP15154189.3
    • 2015-02-06
    • Caterpillar Motoren GmbH & Co. KG
    • Sixel, Eike JoachimRitscher, BertSivasubramanian, Arvind
    • F02D41/00F02D19/00F02D19/02
    • F02D41/0027F02D19/02F02D19/10Y02T10/32Y02T10/36
    • A method for controlling an internal combustion engine (100) operating at least partly on gaseous fuel with a varying gas quality (400) is disclosed. The internal combustion engine (100) includes a gaseous fuel admission valve (58) configured to supply the gaseous fuel to charge air. The method comprises operating (step 600) the internal combustion engine (100) to provide a preset power output with a valve opening duration (402) of the gaseous fuel admission valve (58) set within a preferred valve opening duration range (404). The method further comprises allowing (step 602) the valve opening duration (402) to change in order to maintain the preset power output, monitoring (step 604) the valve opening duration (402) and determining (step 606) that, during operation of the internal combustion engine (100) at the predetermined power output, the valve opening duration (402) changed to a value outside the preferred valve opening duration range (404). The method further comprises adapting (steps 610, 614, 618) a fuel supply parameter (412, 503, 507) such that the valve opening duration (402) returns to the preferred valve opening duration range (404), while continuously providing the preset power output.
    • 公开了一种用于控制至少部分地以气体质量变化的气体燃料(400)运行的内燃机(100)的方法。 内燃机(100)包括气态燃料入口阀(58),其构造成供应气态燃料以对空气进行充气。 该方法包括操作(步骤600)内燃机(100)以提供具有设定在优选阀打开持续时间范围(404)内的气体燃料入口阀(58)的阀打开持续时间(402)的预设功率输出。 该方法还包括允许(步骤602)阀打开持续时间(402)改变以维持预设功率输出,监视(步骤604)阀打开持续时间(402)并确定(步骤606)在操作期间 所述内燃机(100)处于预定功率输出时,所述阀打开持续时间(402)变为优选阀打开持续时间范围之外的值(404)。 该方法还包括使燃料供应参数(412,503,507)适应(步骤610,614,618),使得阀打开持续时间(402)返回到优选的阀打开持续时间范围(404),同时连续地提供预设 功率输出。