公开(公告)号：US20020096145A1

公开(公告)日：2002-07-25

申请号：US10034629

申请日：2001-12-28

Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI

Inventor： Mario Ricco ,  Alfonso Di Meo ,  Silvio Canale

IPC: F02M001/00

CPC classification number: F02M63/0052 ,  F02D41/38 ,  F02D41/3809 ,  F02M45/02 ,  F02M59/08 ,  F02M59/102 ,  F02M59/366 ,  F02M63/0225

Abstract: The system has a high-pressure pump having a number of mechanical pumping elements for pumping high-pressure fuel to a common rail; and a number of injectors communicating with the rail and activated to inject a quantity of fuel sequentially into the corresponding cylinders of the engine. Each pumping element has a delivery at least equal to the maximum draw of each injector, and is activated in phase with at least one of the injectors to minimize the variations in fuel pressure in the rail. Each pumping element may be activated by a cam, which may even have a segmented profile to effect a portion of the travel of the respective pumping element in phase with a corresponding injector.

Abstract translation: 该系统具有高压泵，其具有用于将高压燃料泵送到共轨的多个机械泵送元件; 以及多个喷射器，其与轨道连通并被激活以将一定量的燃料顺序地喷射到发动机的相应气缸中。 每个泵送元件具有至少等于每个喷射器的最大吸力的输送，并且与至少一个喷射器同相激活，以最小化轨道中的燃料压力的变化。 每个泵送元件可以被凸轮激活，凸轮甚至可以具有分段轮廓以实现相应泵送元件与相应的喷射器同相的行进的一部分。