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1. 发明公开

EP2085603A1 System and method of prevention CR pump overheating 审中-公开
标题翻译：系统和Verfahren zur Verhinderung derÜberhitzungeiner CR-Pumpe
公开(公告)号：EP2085603A1
公开(公告)日：2009-08-05
申请号：EP08001853.4
申请日：2008-01-31
申请人： Caterpillar Motoren GmbH & Co. KG , L'ORANGE GMBH
发明人： Haas, Stefan , Ritscher, Bert , Gneist, Bodo , Ressel, Horst , Scheibe, Wolfgang , Schick, Juergen
IPC分类号： F02M37/18 , F02D33/00 , F02D41/30 , F02D1/02 , F02M63/02
CPC分类号： F02M37/18 , F02D33/006 , F02D41/3845 , F02D2200/0602 , F02M59/44 , F02M63/0225
摘要： The present disclosure refers to a fuel injection system (5) for supplying fuel at a high pressure to an internal combustion engine (500). It includes at least a first and a second high-pressure fuel pump (100, 200) configured to pump fuel (105, 205) at a high pressure into a high-pressure fuel distribution line system (300) connected with the internal combustion engine (500). Each of the high-pressure fuel pumps (100, 200) is configured to be operated in a first pump mode and a second pump mode, such that in the first pump mode a first amount of fuel (105, 205) is pumped, said first amount of fuel being associated with a first engine output, and in the second pump mode a second amount of fuel (105, 205), said second amount of fuel being associated with a second engine output which is greater than the first output, is pumped. A control unit (400) is configured to alternately operate the at least two high-pressure fuel pumps (100, 200) such that during a first time period at least the first high-pressure fuel pump (100, 200) is operated in the first pump mode and at least the second high-pressure fuel pump (100, 200) is simultaneously operated in the second pump mode, and such that, during a second time period at least the second high-pressure fuel pump (100, 200) is operated in the first pump mode and at least the first high-pressure fuel pump (100, 200) is simultaneously operated in the second pump mode.
摘要翻译：本公开涉及一种用于向内燃机（500）供应高压燃料的燃料喷射系统（5）。它包括至少第一和第二高压燃料泵（100,200），其构造成将高压燃料（105,205）泵送到与内燃机连接的高压燃料分配管线系统（300）（500）。每个高压燃料泵（100,200）构造成在第一泵模式和第二泵模式下操作，使得在第一泵模式中泵送第一量的燃料（105,205），所述第一数量的燃料与第一发动机输出相关联，并且在第二泵模式中，第二数量的燃料（105,205），所述第二燃料量与大于第一输出的第二发动机输出相关联，是抽水。控制单元（400）构造成交替地操作至少两个高压燃料泵（100,200），使得在第一时间段内至少第一高压燃料泵（100,200）在第一泵模式，并且至少第二高压燃料泵（100,200）在第二泵模式下同时工作，并且使得在第二时间段期间，至少第二高压燃料泵（100,200）在第一泵模式下操作，并且至少第一高压燃料泵（100,200）在第二泵模式中同时工作。

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