公开(公告)号：EP4390425A1

公开(公告)日：2024-06-26

申请号：EP23217286.6

申请日：2023-12-15

申请人： Marelli Europe S.p.A.

发明人： AURILIO, Gianluca ,  PATRINOSTRO, Simone ,  SUGLIA, Rosanna ,  EL GOUMRI, Brahim

IPC分类号： G01R31/52 ,  G01R27/02 ,  G01R31/00

CPC分类号： G01R31/52 ,  G01R27/025 ,  G01R31/006

摘要： There is described a method for measuring a negative terminal insulation resistance Rin, present between a negative terminal 11 of an energized electrical apparatus 2 and a ground 3 ideally isolated from the energized electrical apparatus 2, and a positive terminal insulation resistance Rip, present between a positive terminal 12 of the energized electrical apparatus 2 and the aforesaid ground 3 ideally isolated from the energized electrical apparatus 2.
Such a method first provides arranging a first switching circuit 16 between said positive terminal 12 and ground 3, thus in parallel with the positive terminal insulation resistance Rip, and arranging a second switching circuit 15 between said negative terminal 11 and ground 3, thus in parallel with the negative terminal insulation resistance (Rin).
The aforesaid first switching circuit 16 comprises a first switching unit, configured to take either one of two states according to a first driving signal having a positive branch switching duty-cycle dp, and a first sample resistance Rkp arranged in series with respect to the aforesaid first switching unit.
The aforesaid second switching circuit 15 comprises a second switching unit configured to take either one of two states according to a second driving signal having a negative branch switching duty-cycle dn and a second sample resistance Rkn arranged in series with respect to said second switching unit.
The method then comprises the step of defining at least two working points of the circuit consisting of the energized electrical apparatus 2, the first switching circuit 16, and the second switching circuit 15; a first working point is associated with a first positive branch switching duty-cycle value dp1 and a first negative branch switching duty-cycle value dn1; the second working point is associated with a second positive branch switching duty-cycle value dp2 and a second negative branch switching duty-cycle value dn2.
The method further includes controlling the first switching circuit 16 and the second switching circuit 15 so that they operate in accordance with the aforesaid first working point, and measuring, in such a condition, a respective first battery voltage value VB1, present between the negative terminal 11 and the positive terminal 12, and a respective first reference voltage value Viso1, representative of a voltage present at the ends of one of the first switching circuit 16 and the second switching circuit 15; such a reference voltage is thus determined by the first working point and is also dependent on both the negative terminal insulation resistance Rin and the positive terminal insulation resistance Rip.
The method then includes controlling the first switching circuit 16 and the second switching circuit 15 so that they operate in accordance with the second working point, and measuring, in such a condition, a respective second battery voltage value VB2, present between said negative terminal 11 and positive terminal 12, and a respective second reference voltage value Viso2, representative of a voltage present at the ends of one of the first switching circuit 16 and the second switching circuit 15; such a reference voltage is thus determined by the second working point and is also dependent on both the negative terminal insulation resistance Rin and the positive terminal insulation resistance Rip.
Finally, the method provides calculating the aforesaid negative terminal insulation resistance Rin and positive terminal insulation resistance Rip, based on the aforesaid first battery voltage value VB1, first reference voltage value Viso1, second battery voltage value VB2 and second reference voltage value Viso2.
The aforesaid step of defining at least two working points comprises determining the aforesaid first positive branch switching duty-cycle value dp1, first negative branch switching duty-cycle value dn1, second positive branch switching duty-cycle value dp2, and second negative branch switching duty-cycle value dn2 based on the criterion of keeping the first reference voltage value Viso1 and the second reference voltage value Viso2 within a given neighborhood with respect to a predefined reference target voltage Vt.

公开(公告)号：EP4350139A1

公开(公告)日：2024-04-10

申请号：EP23201578.4

申请日：2023-10-04

申请人： Marelli Europe S.p.A.

发明人： SPIZZIRRI, Armando ,  MARIANELLO, Riccardo ,  MANCINI, Luca ,  PETRECCHIA, Stefano ,  PETRONE, Michele

IPC分类号： F02D41/04 ,  F02D41/38 ,  F02M59/36 ,  F02M59/44 ,  F02M59/46

摘要： A method to control a fuel injection system (1) for an internal combustion engine and provided with a fuel pump (4). The fuel pump (4) has: a pumping chamber (14); a piston (15) mounted so as to slide within the pumping chamber (14); an intake duct (17), which ends in the pumping chamber (14) and is provided with an intake valve (18); a delivery duct (19), which starts from the pumping chamber (14) and is provided with a delivery valve (20); and a flow rate adjustment device (6), which is coupled to the intake valve (18) and can be controlled so as to prevent the intake valve (18) from closing or allow it to close when a fuel pressure inside the pumping chamber (14) exceeds a fuel pressure in the intake duct (17). The control method presents the steps of: detecting when the internal combustion engine is stopped; and controlling, after the internal combustion engine has been stopped, the flow rate adjustment device (6) to allow the intake valve (18) to close.

公开(公告)号：EP4209673A1

公开(公告)日：2023-07-12

申请号：EP22213787.9

申请日：2022-12-15

申请人： Marelli Europe S.p.A.

发明人： SPIZZIRRI, Armando ,  PETRECCHIA, Stefano

IPC分类号： F02M59/02 ,  F02M59/10 ,  F02M59/20 ,  F02M59/36 ,  F02M59/48

摘要： A fuel pump (1) for a direct injection system and having: a main body (2); a pumping chamber (4); a piston (5), which is mounted in a sliding manner on the inside of the pumping chamber (4); an intake duct (7), which ends in the pumping chamber (4); an intake valve (8), which is arranged along the intake duct (7); and a flow rate adjustment device (10) provided with a control rod (11) which is coupled to the intake valve (8) and with an electromagnetic actuator (12) which is configured to axially move the control rod (11) . The flow rate adjustment device (10) has a containing element (19), which houses the electromagnetic actuator (12), has an open end (21) facing the intake valve (8), and ends with a "U"-shaped rim (27) which has an outer ring which is arranged around the containing element (19) at a given distance from a cylindrical wall (24) of the containing element (19). An annular weld (22) is obtained between the main body (2) and the outer ring of the "U"-shaped rim (24).

公开(公告)号：EP4145765A1

公开(公告)日：2023-03-08

申请号：EP22191648.9

申请日：2022-08-23

申请人： Marelli Europe S.p.A.

发明人： ROSADINI, Christian ,  CHIARELLI, Simona ,  NESCI, Walter ,  SAPONARA, Sergio ,  GAGLIARDI, Alessio ,  DINI, Pierpaolo

IPC分类号： H04L9/40 ,  H04L12/40 ,  H04L67/12

摘要： Described herein is a method for protection from cyber attacks in a communication network, in particular a CAN (Controller Area Network), of a vehicle, the network comprising:
a communication bus (10), in particular a CAN-bus, and
a plurality of nodes (11) associated to said communication bus (10) in a signal-exchange relationship and associated at least in part to control units for controlling functions of the vehicle,
said nodes (11) exchanging messages (M) passing between nodes of said plurality of nodes (11), and
said messages (M) being identified by respective message identifiers (ID),
said method comprising, at a control node (20) associated to said communication bus (10):
selecting, from among the messages (M) exchanged between the nodes, periodic messages having a transmission periodicity,
grouping (200) said periodic messages into respective groups according to the respective period (T i ), and
performing a procedure (300) of analysis of messages of the nodes (11) that exchange said received periodic messages, which comprises, for each group of transmission periodicity:
obtaining times of arrival (ai) at the respective nodes (11) of a set of periodic messages that have the same message identifier (ID),
computing (312) as a function of said arrival times (ai) average-offset values (O avg ) over successive subsets, of a given number (N) of messages, of said set of received messages,
accumulating (314) said average-offset values (O avg ) for each identifier (ID) with respect to each successive subset to obtain accumulated-offset values (O acc [k]) for each successive subset and a respective identifier (ID),
identifying (316) linear parameters (e[k], S[k]) by computing a regression over said accumulated-offset values (O acc [k]) for each successive subset and respective identifier (ID), said computation comprising computing an angular coefficient, or slope, of the regression, and an intercept, or identification error,
computing (318), on the basis of average-offset values (O avg ) obtained at the step of computing (312) as a function of said arrival times (a i ) average-offset values (O avg ) over successive subsets, a correlation coefficient (p) of the average offset (O avg ) of pairs of messages identified as coming from one and the same node,
performing a first check (350) to check whether the correlation coefficient (p) is higher than a first given threshold,
performing a second check (330) to check whether the angular coefficient (S[k]) between two consecutive messages with the same identifier is higher than a second given threshold,
performing a third check (340) to check whether the intercept (e[k]) between two consecutive messages is higher than a third given threshold, and
supplying the results of said first check (350), said second check (330), and said third check (340) to a message-classification operation (360), configured to supply (RC) a confirmation of classification of the messages according to the transmitting node (11) and message identifier (ID) or an indication of classification error as a function of said results.

公开(公告)号：EP4096168A1

公开(公告)日：2022-11-30

申请号：EP22175298.3

申请日：2022-05-25

申请人： Marelli Europe S.p.A.

发明人： ROSADINI, Mr. Christian ,  CORNELIO, Ms. Anastasia ,  CHIARELLI, Ms. Simona ,  NESCI, Mr. Walter ,  SAPONARA, Mr. Sergio ,  DE PINTO, Ms. Emma

IPC分类号： H04L12/40 ,  H04L9/40 ,  H04L67/12

摘要： Described herein is a method for protection from cyber attacks in a communication network, in particular a CAN (Controller Area Network), of a vehicle, that comprises:
a communication bus (10), in particular a CAN-bus, comprising a high bus line (10H), on which high logic voltages pass, and a low bus line, on which low logic voltages pass (10L); and
a plurality of nodes (11) associated to said communication bus (10) in a signal-exchange relationship and associated at least in part to control units for controlling functions of the vehicle,
said nodes (11) exchanging messages (M) passing between nodes of said plurality of nodes (11) to identify illicit messages (MF), said messages (M) being coded in data frames through dominant and recessive bits,
said method comprising:
acquiring (130) dominant voltage measurements (NV i,k );
obtaining (170) an electrical characteristic (VP) of nodes that transmit messages (M) via the steps of:
acquiring (171) consecutive groups (k) of voltage measurements (VL) on the high bus line (10H) and on the low bus line (10L) during reception of messages (M) at receiving nodes and calculating a distribution thereof;
calculating (172) values of distribution statistics;
calculating (173) a cumulative voltage deviation for each value of statistic; and
obtaining a voltage profile (VP) by adding the cumulative voltage deviations of each statistic, wherein:
said consecutive groups (k) are formed via a sliding window of voltage measurements in which one or more older voltage measurements are replaced with corresponding new voltage measurements;
said method then comprising execution of a malicious-node detection procedure (200), which comprises:
extracting (210) at least one characteristic parameter (m; q) of said voltage profile (VP) for each group;
comparing (220) said at least one characteristic parameter (m; q) of a current group with a corresponding characteristic parameter extracted from a previous group; and
if said comparison operation (220) indicates that said at least one characteristic parameter (m; q) of the current group differs from the at least one characteristic parameter of the previous group by at least one given difference value, supplying an identifier (ID) of the corresponding message and calculating a time of settling ( k st ) of the at least one characteristic parameter on a constant value;

said method then comprising execution of a transmitting-node identification procedure (300), which comprises:
comparing said at least one characteristic parameter (m; q) evaluated at the settling time ( k st ) against all the corresponding characteristic parameters of all the messages ( m i ) received up to said settling time ( k st ) , said identification procedure (300) comprising:
defining (310) for each of said messages received (mi) a range of variation ( limsup, liminf ) of said at least one characteristic parameter (m; q) with respect to a given number of previous samples ( k past ); and
evaluating (320) whether the value of said at least one characteristic parameter (m; q) falls within the range of variation of one of said messages and, if so (321; 322), identifying as malicious node the node that transmits said message.

公开(公告)号：EP4053390A1

公开(公告)日：2022-09-07

申请号：EP22159554.9

申请日：2022-03-01

申请人： Marelli Europe S.p.A.

发明人： AMBROSINO, Massimo ,  LUBRANO, Luigi ,  MILANI, Emanuele ,  LASANA, Marco ,  ROSA, Riccardo

IPC分类号： F02D9/04 ,  F02D9/10 ,  F16K1/22 ,  F16K31/04 ,  F02M26/70 ,  F02M26/74 ,  F01N1/16

摘要： A motor-driven throttle valve (1) for an exhaust duct and having: a tubular duct (2), which is designed so that exhaust gases can flow through it; a throttle shutter (3), which is arranged inside the tubular duct (2) and is mounted so as to rotate around a rotation axis (4); a first shaft (5), which is mounted so as to rotate around the rotation axis (4) and supports the throttle shutter (3); an electric actuator (6), which is provided with a second shaft (52) and is designed to rotate the shaft (5) around the rotation axis (4); a support bearing (9), which supports the shaft (5) in a through manner and is arranged on the outside of the tubular duct (2); and a spring (11), which applies to the shaft (5) an elastic force, which axially pushes the shaft (5) and, at the same time, is configured to transmit a rotary motion around the rotation axis (4) from the second shaft (52) of the electric actuator (6) to the first shaft (5) supporting the throttle shutter (3).

公开(公告)号：EP4019748A1

公开(公告)日：2022-06-29

申请号：EP21215216.9

申请日：2021-12-16

申请人： Marelli Europe S.p.A.

发明人： BRIGNONE, Mauro ,  LA SANA, Marco ,  MILANI, Emanuele ,  RIVELLA, Stefano

IPC分类号： F01N3/10 ,  F01N3/20 ,  F01N3/025 ,  F02M31/16 ,  F01N3/02

摘要： A heating device (6) for an exhaust system (1) of an internal combustion engine (2) and having: a tubular body (12), where a combustion chamber (7) is obtained on the inside; a fuel injector (9), which injects fuel into the combustion chamber (7); at least one inlet opening (18), which can be connected to a fan (8) so as to receive an air flow, which is directed to the combustion chamber (7) and gets mixed with the fuel; a feeding channel (21), which receives air from the inlet opening (18), surrounds an end portion of the fuel injector (9) and ends with a nozzle (22), which is arranged around an injection point of the fuel injector (9); and a spark plug (10), which is mounted through a side wall (16) of the tubular body (12) so as to trigger the combustion of a mixture of air and fuel. The fuel injector (9) is configured to spray at least 80% of the fuel against an inner surface (26) of the feeding channel (21).

公开(公告)号：EP3993584A1

公开(公告)日：2022-05-04

申请号：EP21202278.4

申请日：2021-10-12

申请人： Marelli Europe S.p.A.

发明人： LO RITO, Gianfranco ,  MAGGIONI, Davide

IPC分类号： H05K7/14 ,  H05K5/00

摘要： A sealed electronic module (4) comprising a printed circuit board (8) having a plurality of electronic components (12), a formed metal sheet (16) which acts as a support and fixing for the printed circuit board (8) by means of at least one fixing means (20), a closing cover (24) which hermetically covers the formed metal sheet and/or the printed circuit board (8) so as to ensure the hermetic seal of the printed circuit board (8) with respect to the outside of the sealed electronic module (4). The at least one fixing means (20) of the printed circuit board (8) on the formed metal sheet (16) comprises at least one mechanical joint (34) which forms a shaped coupling between a male portion (36) and a female portion or seat (40) formed on the printed circuit board (8) and on the formed metal sheet (16) or vice versa; in this way the formed metal sheet (16), at said mechanical joint (34), is without through-holes and communicates with the outside of the sealed electronic module (4).

公开(公告)号：EP3972093A1

公开(公告)日：2022-03-23

申请号：EP21195676.8

申请日：2021-09-09

申请人： Marelli Europe S.p.A.

发明人： STAMATO, Salvatore ,  LELI, Francesco

IPC分类号： H02K7/00 ,  H02K1/28

摘要： A rotor (4) for an electric motor comprising a crankshaft (8) extending along a prevailing extension axis (X-X) coinciding with an axis of rotation of the crankshaft (8), at least one steel plate (12) provided with slots (16) for housing magnets, the steel plate (12) being provided with a central seat (20), keyed to an outer side wall (24) of the crankshaft (8) according to an interference coupling, wherein the steel plate (12) is coupled to the crankshaft (8) at said central seat (20) by means of a first tooth (36) obtained on the steel plate (12), which projects towards the associated crankshaft (8) and a first radial seat (40), obtained on said outer side wall (24) of the crankshaft (8). The first radial seat (40) has an isosceles trapezium cross-section delimited laterally by a pair of oblique sides (44) converging towards the axis of rotation; the first tooth (36) has a 'V' cross-section with a pair of curvilinear side walls (48), suitable for interfacing against said oblique sides (44) of the first radial seat (40) .

公开(公告)号：EP3894293A1

公开(公告)日：2021-10-20

申请号：EP19835729.5

申请日：2019-12-11

申请人： Marelli Europe S.p.A.

发明人： GIORELLI, Michele ,  CORNO, Matteo ,  SAVARESI, Sergio Matteo ,  ROSELLI, Federico

IPC分类号： B60W30/09 ,  B60W30/095 ,  B60W50/00 ,  B60W30/18 ,  G05D1/00 ,  G05D1/02 ,  B60W50/06