公开(公告)号：US20020195081A1

公开(公告)日：2002-12-26

申请号：US09888581

申请日：2001-06-26

申请人： CATERPILLAR INC.

发明人： Brian G. McGee ,  Matthew R. Roth ,  Jason J. Rasmussen

IPC分类号： F02M051/00 ,  F02B003/00

CPC分类号： F02D41/3836 ,  F02D41/045 ,  F02D41/10 ,  F02D41/105 ,  F02D41/1446 ,  F02D41/2406 ,  F02D41/403 ,  F02D2041/389 ,  F02D2200/0404 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2250/31 ,  F02M57/025 ,  Y02T10/44

摘要： An apparatus and method transitions fuel delivery between a first injection characteristic shape and a second injection characteristic shape based on engine operating parameters. The apparatus and method may be adapted to control a fuel injection system, and to operate in at least a split injection mode and a boot injection mode, including steps or means for determining whether an acceleration condition exists, and on the basis of such determination, rapidly changing from a split injection mode to a boot injection mode. This may include a fuel injection control system and/or a controller operative to identify an acceleration condition on the basis of at least one sensed acceleration-related engine operating condition, and to rapidly change the fuel injection mode for at least one fuel injector from the split fuel injection mode to the boot fuel injection mode. The fuel injection control system and/or a controller may also be operable to determine a rail pressure, whether the rail pressure is within a predetermined limit, and on that basis, to modify at least one of a main fuel injection signal timing and an anchor fuel injection signal timing such that a resulting multiple fuel injection has a boot injection shape.

摘要翻译： 一种装置和方法基于发动机操作参数在第一喷射特性形状和第二喷射特性形状之间转换燃料输送。 该装置和方法可以适于控制燃料喷射系统，并且至少以分流喷射模式和启动喷射模式操作，包括用于确定是否存在加速条件的步骤或装置，并且基于这种确定， 从分离喷射模式快速变化到引导喷射模式。 这可以包括燃料喷射控制系统和/或控制器，其可操作以基于至少一个所感测的与加速度相关的发动机工作状况来识别加速度状况，并且从至少一个燃料喷射器的燃料喷射模式 将燃油喷射模式分为启动燃料喷射模式。 燃料喷射控制系统和/或控制器还可以用于确定轨道压力，轨道压力是否在预定极限内，并且在此基础上，修改主要燃料喷射信号定时和锚点中的至少一个 燃料喷射信号定时，使得所得到的多个燃料喷射具有靴注射形状。