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1.发明申请公开(公告)号：US20150204286A1
公开(公告)日：2015-07-23
申请号：US14600257
申请日：2015-01-20
Applicant: Magneti Marelli S.p.A.
Inventor： Giovanni Prodi , Fabio Sensi , Luca Mancini
CPC classification number: F02M59/368 , F02D41/20 , F02D41/30 , F02D41/3845 , F02D2041/2017 , F02D2041/202
Abstract: Method to control an electromagnetic actuator of an internal combustion engine, in particular for a fuel pump of a direct-injection system; wherein the electromagnetic actuator is controlled by an electric current pulse of the Peak&Hold type, i.e. subdivided into a peak phase and a hold phase; the method includes acquiring the initial duration of the peak phase, during which a peak control current is to be supplied to the electromagnetic actuator to control the movement of a component of the electromagnetic actuator moving towards a position defined by a limit stop; and determining the duration of the peak phase by progressively decreasing the initial duration of the peak phase by a first change.
Abstract translation: 控制内燃机的电磁致动器的方法，特别是用于直接喷射系统的燃料泵的方法; 其中所述电磁致动器由所述Peak＆Hold型的电流脉冲控制，即被分为峰值相位和保持相位; 该方法包括获取峰值相位的初始持续时间，在此期间，峰值控制电流将被提供给电磁致动器，以控制电磁致动器的部件朝着由限位器限定的位置移动; 以及通过逐渐减小所述峰值相位的初始持续时间通过第一变化来确定所述峰值相位的持续时间。
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公开(公告)号：US10113498B2
公开(公告)日：2018-10-30
申请号：US15592420
申请日：2017-05-11
Applicant: MAGNETI MARELLI S.p.A.
Inventor： Luca Mancini , Paolo Pasquali , Riccardo Marianello
Abstract: A method to control a fuel pump for a direct injection system provided with a common rail comprising the steps of calculating the objective fuel flow rate to be fed by the high pressure pump to the common rail instant by instant to have the desired pressure value inside the common rail; comparing the objective fuel flow rate with the maximum flow rate that can be delivered by the high pressure pump; and, based on the comparison between the objective fuel flow rate and the maximum flow rate that can be delivered by the high pressure pump, controlling the high pressure pump so as to alternate operating cycles of the high pressure pump with the maximum flow rate that can be delivered and idle operating cycles of the high pressure pump.
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公开(公告)号：US09822747B2
公开(公告)日：2017-11-21
申请号：US14600257
申请日：2015-01-20
Applicant: Magneti Marelli S.p.A.
Inventor： Giovanni Prodi , Fabio Sensi , Luca Mancini
CPC classification number: F02M59/368 , F02D41/20 , F02D41/30 , F02D41/3845 , F02D2041/2017 , F02D2041/202
Abstract: Method to control an electromagnetic actuator of an internal combustion engine, in particular for a fuel pump of a direct-injection system; wherein the electromagnetic actuator is controlled by an electric current pulse of the Peak&Hold type, i.e. subdivided into a peak phase and a hold phase; the method includes acquiring the initial duration of the peak phase, during which a peak control current is to be supplied to the electromagnetic actuator to control the movement of a component of the electromagnetic actuator moving towards a position defined by a limit stop; and determining the duration of the peak phase by progressively decreasing the initial duration of the peak phase by a first change.
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公开(公告)号：US09822751B2
公开(公告)日：2017-11-21
申请号：US14847286
申请日：2015-09-08
Applicant: MAGNETI MARELLI S.p.A.
Inventor： Enrico Vezzani , Michele Petrone , Luca Mancini
CPC classification number: F02M63/0265 , F02M59/06 , F02M59/102 , F02M2200/02 , F04B1/0426 , F04B1/0452 , F04B53/1002 , F16F1/047
Abstract: Fuel pump for a direct injection system provided with a common rail. The fuel pump has a pumping chamber defined in a main body; a piston which is mounted in a sliding manner inside the pumping chamber to cyclically vary the volume of the pumping chamber; an intake channel which originates from a wall of the pumping chamber; an intake valve which is coupled to the intake channel; a delivery channel which originates from a wall of the pumping chamber; a delivery valve which is coupled to the delivery channel; and an actuating spring which has a plurality of turns having a pitch that varies between the turns and that is coupled to the piston so as to push the piston towards a maximum volume or minimum volume position of the pumping chamber.
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