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1.发明申请公开(公告)号：US20160025058A1
公开(公告)日：2016-01-28
申请号：US14706144
申请日：2015-05-07
Applicant: Magneti Marelli S.p.A.
Inventor： Filippo Cavanna , Riccardo Lanzoni , Marco Morelli , Alessandro Musi , Fabio Panini , Fabio Sensi
CPC classification number: F02M65/001 , F02D41/06 , F02D41/247 , F02D41/3005 , F02D41/402 , Y02T10/44
Abstract: A method to determine the injection pattern in the compression stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine, comprising the steps of determining the initial quantity of fuel and an objective quantity of fuel to be injected for each partial injection of a maximum number of partial injections; determining an effective quantity of fuel to be injected for each partial injection as a function of the respective initial quantity of fuel and of the respective objective quantity of fuel; and determining an objective pattern of partial injections to be performed in the compression stroke as a function of the value of the end of injection angle and of the effective quantity of fuel to be injected for each partial injection of a maximum number of partial injections to be performed in the compression stroke.
Abstract translation: 一种用于确定直喷式内燃机的气缸的燃烧循环的压缩冲程中的喷射模式的方法，包括以下步骤：确定每个局部喷射的燃料的初始量和待喷射的目标燃料量 最大数量的部分注射; 根据各自的初始燃料量和各个目标量的燃料，确定每个局部喷射要注入的燃料的有效量; 并且确定在压缩冲程中要执行的部分喷射的目标图案作为喷射角度的值和要注射的有效燃料量的函数，以使得每次局部喷射最多数量的部分喷射为 在压缩冲程中执行。
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Patent Agency Ranking
公开(公告)号：US20190360423A1
公开(公告)日：2019-11-28
申请号：US16423906
申请日：2019-05-28
Applicant: MAGNETI MARELLI S.p.A.
Inventor： Marco Parotto , Marco Morelli , Claudio Guido , Domenico Paolino
Abstract: Method to determine an opening time of an electromagnetic fuel injector; the electromagnetic fuel injector is controlled using a series of progressively increasing energization times of the electromagnetic actuator; for each control of the electromagnetic injector, the presence or the absence of a closing of the injection valve is detected; the opening time is identified, which is equal to an intermediate value between the last energization time of the electromagnetic actuator for which the absence of a closing of the injection valve was determined and the first energization time of the electromagnetic actuator for which the presence of a closing of the injection valve was determined.
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公开(公告)号：US09909488B2
公开(公告)日：2018-03-06
申请号：US14706059
申请日：2015-05-07
Applicant: Magneti Marelli S.p.A.
Inventor： Filippo Cavanna , Riccardo Lanzoni , Marco Morelli , Alessandro Musi , Fabio Panini , Fabio Sensi
CPC classification number: F02B5/02 , F02D41/047 , F02D41/06 , F02D41/402 , Y02T10/44
Abstract: A method to determine the injection pattern in the intake stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine, which includes determining the overall quantity of fuel to be injected for each combustion cycle of each cylinder during the intake stroke; determining the maximum quantity of fuel to be injected for each partial injection as a function of the value of the start of injection angle, of the speed and of the load of the internal combustion engine; and determining the number of partial injections and the objective quantity to be injected for each partial injection as a function of the quantity of fuel to be injected for each combustion cycle of each cylinder during the intake stroke and of the maximum quantity of fuel to be injected for each partial injection.
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公开(公告)号：US20190360424A1
公开(公告)日：2019-11-28
申请号：US16423428
申请日：2019-05-28
Applicant: MAGNETI MARELLI S.p.A.
Inventor： Marco Parotto , Marco Morelli , Claudio Guido , Domenico Paolino
IPC: F02D41/40
Abstract: Method to determine a closing instant of an electromagnetic fuel injector; in a beginning instant of the injection, a positive voltage is applied to a coil of an electromagnetic actuator so as to cause an electric current to circulate through the coil, said electric current determining the opening of an injection valve; in an end instant of the injection, a negative voltage is applied to the coil of the electromagnetic actuator so as to cancel the electric current circulating through the coil; a first voltage time development is detected at least one end of the coil of the electromagnetic actuator after the cancellation of the electric current circulating through the coil; the voltage actuation time development is compared with a voltage comparison time development; and the closing instant of the electromagnetic injector is determined based on the comparison between the voltage actuation time development and the voltage comparison time development.
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公开(公告)号：US09677525B2
公开(公告)日：2017-06-13
申请号：US14706144
申请日：2015-05-07
Applicant: Magneti Marelli S.p.A.
Inventor： Filippo Cavanna , Riccardo Lanzoni , Marco Morelli , Alessandro Musi , Fabio Panini , Fabio Sensi
CPC classification number: F02M65/001 , F02D41/06 , F02D41/247 , F02D41/3005 , F02D41/402 , Y02T10/44
Abstract: A method to determine the injection pattern in the compression stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine, comprising the steps of determining the initial quantity of fuel and an objective quantity of fuel to be injected for each partial injection of a maximum number of partial injections; determining an effective quantity of fuel to be injected for each partial injection as a function of the respective initial quantity of fuel and of the respective objective quantity of fuel; and determining an objective pattern of partial injections to be performed in the compression stroke as a function of the value of the end of injection angle and of the effective quantity of fuel to be injected for each partial injection of a maximum number of partial injections to be performed in the compression stroke.
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6.发明申请公开(公告)号：US20150322909A1
公开(公告)日：2015-11-12
申请号：US14706059
申请日：2015-05-07
Applicant: Magneti Marelli S.p.A.
Inventor： Filippo Cavanna , Riccardo Lanzoni , Marco Morelli , Alessandro Musi , Fabio Panini , Fabio Sensi
CPC classification number: F02B5/02 , F02D41/047 , F02D41/06 , F02D41/402 , Y02T10/44
Abstract: A method to determine the injection pattern in the intake stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine, which includes determining the overall quantity of fuel to be injected for each combustion cycle of each cylinder during the intake stroke; determining the maximum quantity of fuel to be injected for each partial injection as a function of the value of the start of injection angle, of the speed and of the load of the internal combustion engine; and determining the number of partial injections and the objective quantity to be injected for each partial injection as a function of the quantity of fuel to be injected for each combustion cycle of each cylinder during the intake stroke and of the maximum quantity of fuel to be injected for each partial injection.
Abstract translation: 一种确定直喷式内燃机的气缸的燃烧循环的进气冲程中的喷射模式的方法，其包括在进气冲程期间确定每个气缸的每个燃烧循环的待燃喷射量的总量; 根据内燃机的速度和负载的喷射角度的开始值确定每个局部喷射的喷射燃料的最大量; 以及确定每次部分喷射的喷射次数和作为在进气冲程期间每个气缸的每个燃烧循环所喷射的燃料量的函数和要喷射的最大燃料量的函数的函数 对于每次局部注射。
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