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1. 发明公开

EP4206444A1 IMPROVED INTERNAL COMBUSTION ENGINE PROVIDED WITH AN EXHAUST GAS HEAT RECOVERY SYSTEM AND METHOD TO CONTROL SAID ENGINE 审中-实审
公开(公告)号：EP4206444A1
公开(公告)日：2023-07-05
申请号：EP22217397.3
申请日：2022-12-30
申请人： Marelli Europe S.p.A.
发明人： DE CESARE, Matteo , BRUGNONI, Enrico
IPC分类号： F01N3/025 , F01N3/20 , F01N5/02 , F01N13/08 , F01N13/00 , F01N3/00 , F01P3/00
摘要： An internal combustion engine (1) is described which comprises an exhaust duct (4), at least one catalytic converter (6, 7) arranged along the exhaust duct (4) and a burner (8) suited to introduce exhaust gases into the exhaust duct (4); a conditioning system (9) designed to cause a conditioning fluid to circulate in order to keep the temperature of the internal combustion engine (1) within a safe temperature range; and an exhaust gas heat recovery system (30) comprising a duct (31) arranged parallel to the exhaust duct (4) and a first heat exchanger (32) designed to heat the conditioning fluid (32) by means of the exhaust gases; wherein the exhaust gas heat recovery system (30) is arranged along the exhaust duct (4), downstream of the burner (8) .

2. 发明公开

EP4112897A1 METHOD TO CONTROL A BURNER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE 有权
公开(公告)号：EP4112897A1
公开(公告)日：2023-01-04
申请号：EP22181841.2
申请日：2022-06-29
申请人： Marelli Europe S.p.A.
发明人： DE CESARE, Matteo , BRUGNONI, Enrico , PANCIROLI, Marco , STOLA, Federico
IPC分类号： F01N3/20 , F01N3/025 , F01N9/00 , F01N3/32 , F01N3/36 , F01N3/38
摘要： A method to control an internal combustion engine (1) provided with an exhaust system (2) for the exhaust gases of a vehicle having an exhaust duct (10) and an exhaust gas after-treatment system (14) comprising at least one catalytic converter (15, 17) arranged along the exhaust duct (10); a burner (21) suited to introduce the exhaust gases into the exhaust duct (10) to speed up the heating of said at least one catalytic converter (15, 17), wherein a combustion chamber (22) is defined inside the burner (21) which receives fuel from an injector (27), designed to inject the fuel inside the combustion chamber (22) and the fresh air by means of an air feeding circuit (23) provided with a pumping device (24) that feeds the air, a shut-off valve (26) arranged upstream of the burner (21) and a mass air flow sensor (9; 39) interposed between the pumping device (24) and the shut-off valve (26); the method provides the following steps: calculating the thermal power (P OBJ ) required to reach the nominal operating temperature of said at least one catalytic converter (15, 17); determining the objective air flow rate (ṁ A_OBJ ) to be fed to the burner (21) to obtain said thermal power (P OBJ ) required to reach the nominal operating temperature of said at least one catalytic converter (15, 17); determining the nominal number (N NOM ) of revolutions with which to operate the pumping device (24) by means of a map depending on the objective air flow rate (ṁ A_OBJ ), on the ambient pressure (P ATM ), on the ambient temperature (T ATM ) and on the pressure (P A ) of the air entering the burner (21); determining a closed-loop contribution (N CL ) of the number of revolutions with which to operate the pumping device (24) by means of a PID controller which tries to zero a difference between the objective air flow rate (ṁ A_OBJ ) and the air flow rate (ṁ A ) detected by the mass air flow sensor (9; 39); determining a further contribution (N ADAT ) of the number of revolutions with which to operate the pumping device (24) depending on the integral action of the PID controller under stationary conditions; and determining the actual number (N) of revolutions with which to operate the pumping device (24) by the sum of the nominal number (N NOM ) of revolutions, the closed-loop contribution (N CL ) of the number of revolutions with which to operate the pumping device (24) and the further contribution (N ADAT ) of the number of revolutions with which to operate the pumping device (24).

3. 发明公开

EP3947945A1 METHOD TO CONTROL THE COMBUSTION OF AN INTERNAL COMBUSTION ENGINE 有权
公开(公告)号：EP3947945A1
公开(公告)日：2022-02-09
申请号：EP20723526.8
申请日：2020-04-01
申请人： Marelli Europe S.p.A.
发明人： PANCIROLI, Marco , DE CESARE, Matteo , LANZONI, Riccardo , ZITO, Antonio , CAVINA, Nicolò
IPC分类号： F02D41/00 , F02D19/12 , F02P5/15

4. 发明公开

EP4112894A1 METHOD TO CONTROL A BURNER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE 审中-实审
公开(公告)号：EP4112894A1
公开(公告)日：2023-01-04
申请号：EP22181310.8
申请日：2022-06-27
申请人： Marelli Europe S.p.A.
发明人： DE CESARE, Matteo , BRUGNONI, Enrico , PANCIROLI, Marco , STOLA, Federico
IPC分类号： F01N3/025 , F01N3/20 , F01N9/00 , F01N3/38 , F01N3/32 , F01N3/36
摘要： A method to control an internal combustion engine (1) having an exhaust duct (10) and an exhaust gas after-treatment system (14) comprising at least one catalytic converter (15, 17) arranged along the exhaust duct (10); an oxygen sensor (18, 18*, 18**) housed along the exhaust duct (10) and arranged upstream of said at least one catalytic converter (15, 17); and a burner (21) suited to introduce the exhaust gases into the exhaust duct (10) upstream of the oxygen sensor (18, 18*, 18**) the method provides the steps of calculating the thermal power (P OBJ ) required to reach the nominal operating temperature of said at least one catalytic converter (15, 17) obtained with an objective value (λ OBJ ) of the air/fuel ratio value; and determining both the objective fuel flow rate (ṁ F_OBJ ) and the objective air flow rate (ṁ A_OBJ ) to be fed to the burner (21) to obtain the thermal power (P OBJ ) required to reach the nominal operating temperature of said at least one catalytic converter (15, 17).

5. 发明公开

EP4098859A1 METHOD TO ESTIMATE THE TEMPERATURE OF AN ELECTROMAGNETIC ACTUATOR 有权
公开(公告)号：EP4098859A1
公开(公告)日：2022-12-07
申请号：EP22174802.3
申请日：2022-05-23
申请人： Marelli Europe S.p.A.
发明人： DE CESARE, Matteo , GUIDO, Claudio , PAROTTO, Marco
IPC分类号： F02D41/20 , F02D41/22 , F02M51/06
摘要： A method to estimate the temperature of an electromagnetic actuator (1), which entails a preliminary step in which to define a first threshold value (I T , I T *, I T1 ) for the current or for the voltage; and define a characteristic curve (C) of the actuator family in the plane temperature / time needed to reach the threshold value (I T , I T *, I T1 ); a step in which to carry out a reference measurement, in which, using the characteristic curve (C), a reference time (S ref ) needed by the electromagnetic actuator (1) to reach the first threshold value (I T , I T *, I T1 ) is associated with a known reference temperature (T ref ); and a step in which to carry out a series of measurements in which to determine the time needed by the electromagnetic actuator (1) to reach the first threshold value (I T , I T *, I T1 ), calculate the deviation (Δ) between the time needed by the electromagnetic actuator (1) to reach the first threshold value (I T , I T *, I T1 ) and the reference time (S ref ); and determine the temperature of the electromagnetic actuator (1), using the characteristic curve (C), by associating the temperature of the electromagnetic actuator (1) with the sum (SΔ) of the deviation (Δ) and of the reference time (S ref ).

6. 发明公开

EP3767099A1 METHOD TO CONTROL A HIGH-PRESSURE FUEL PUMP FOR A DIRECT INJECTION SYSTEM 有权
公开(公告)号：EP3767099A1
公开(公告)日：2021-01-20
申请号：EP20186047.5
申请日：2020-07-15
申请人： Marelli Europe S.p.A.
发明人： PAROTTO, Marco , DE CESARE, Matteo , MORELLI, Marco , PRODI, Giovanni , CARDELLINI, Tommaso
IPC分类号： F02D41/38 , F02D41/22
摘要： The invention relates to a method to control a fuel pump (4) for a direct injection system of a heat engine (1) provided with a common rail (3) comprising the steps of determining a minimum threshold (Q MIN ) based on the pressure (P RAIL ) in the common rail (3) and on the speed (n) of the heat engine (1), on the temperature (T PUMP ) of the high-pressure pump (4) and on the inlet pressure (P LOW ) of the high-pressure pump (4); calculating the objective fuel flow rate (M ref ) to be fed by the high-pressure pump (4) to the common rail (3) instant by instant in order to have the desired pressure value (P TARGET ) inside the common rail (3); comparing the objective fuel flow rate (M ref ) with the minimum threshold (Q MIN ); and controlling the high-pressure pump (4) based on the comparison between the objective fuel flow rate (M ref ) and the minimum threshold (Q MIN ) .

7. 发明公开

EP3719290A1 METHOD TO CONTROL THE COMBUSTION OF AN INTERNAL COMBUSTION ENGINE 审中-实审
公开(公告)号：EP3719290A1
公开(公告)日：2020-10-07
申请号：EP20167372.0
申请日：2020-03-31
申请人： Marelli Europe S.p.A.
发明人： PANCIROLI, Marco , DE CESARE, Matteo , LANZONI, Riccardo , ZITO, Antonio
IPC分类号： F02D35/02 , F02D41/00 , F02P5/15 , F02P5/152 , F02P5/153
摘要： A method to control the combustion of an internal combustion engine (1) comprising determining a combustion model providing a spark advance value (SA model ) depending on an objective value of a quantity (R EGR ) representing the incidence of a low-pressure EGR circuit, of the rotation speed (n), of the intake efficiency (η ASP ) and of an open-loop contribution (MFB50 OL ) of a combustion index (MFB50); calculating a first closed-loop contribution (ΔSA MFB50 ) of the spark advance depending on the combustion index (MFB50); calculating a second closed-loop contribution (ΔSA KNOCK ) of the spark advance depending on a quantity indicating the knocking energy; and calculating the objective value (SA obj ) of the spark advance angle to be operated through the sum of the spark advance value (SA model ) provided by the combustion model and of the first closed-loop contribution (ΔSA MFB50 ) or, alternatively, of the second closed-loop contribution (ΔSA KNOCK ) .

8. 发明公开

EP4299889A1 METHOD TO ESTIMATE THE MAXIMUM PRESSURE INSIDE A COMBUSTION CHAMBER OF A CYLINDER OF AN INTERNAL COMBUSTION ENGINE 审中-实审转让
公开(公告)号：EP4299889A1
公开(公告)日：2024-01-03
申请号：EP23181704.0
申请日：2023-06-27
申请人： Marelli Europe S.p.A. , Alma Mater Studiorum Universita di Bologna
发明人： DE CESARE, Matteo , PANCIROLI, Marco , STOLA, Federico , PONTI, Fabrizio , RAVAGLIOLI, Vittorio , SILVAGNI, Giacomo
IPC分类号： F02D35/02
摘要： There is described a method to estimate the maximum pressure (P MAX , P 3 ) inside the combustion chamber of a cylinder (2) of an internal combustion engine (1) which comprises estimating said maximum pressure (P MAX , P 3 ) based on the pressure value (P 2 ) obtained at the end of the compression stroke of the combustion cycle and on the MFB50 combustion index, which represents the engine angle at which, inside the cylinder (2) 50% of the fuel mass was burnt.

9. 发明公开

EP4202193A1 HEATING DEVICE FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE AND RELATIVE CONTROL METHOD 有权
公开(公告)号：EP4202193A1
公开(公告)日：2023-06-28
申请号：EP22213887.7
申请日：2022-12-15
申请人： Marelli Europe S.p.A.
发明人： PAROTTO, Marco , DE CESARE, Matteo , GUIDO, Claudio
IPC分类号： F01N3/025 , F01N3/20 , F01N3/36 , F01N3/38
摘要： A heating device (6) for an exhaust system (1) of an internal combustion engine (2). The heating device (6) has: a tubular body (12), which contains a combustion chamber (7); a fuel injector (9), which is coupled to the tubular body (12) in order to inject fuel into the combustion chamber (7), is passive, namely it lacks actuators that can be electrically controlled to generate a movement, and has a movable shutter (21), which is pressure-controlled in order to inject fuel only when the fuel pressure inside the injector (9) is greater than a predetermined pressure threshold value; a spark plug (10), which is coupled to the tubular body (12); a supply duct (18), which is designed to connect the injector (9) to a pump (17), which is configured to supply fuel under pressure; and a shut-off solenoid valve (23), which can be electrically controlled and is arranged along the supply duct (18) between the pump (17) and the passive injector (9) .

10. 发明公开

EP4112900A1 METHOD TO CONTROL A BURNER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE 有权
公开(公告)号：EP4112900A1
公开(公告)日：2023-01-04
申请号：EP22181993.1
申请日：2022-06-29
申请人： Marelli Europe S.p.A.
发明人： DE CESARE, Matteo , BRUGNONI, Enrico , PANCIROLI, Marco , STOLA, Federico
IPC分类号： F01N9/00 , F01N3/32 , F01N3/36 , F01N3/38
摘要： A method to control an internal combustion engine (1) having an exhaust duct (10) and an exhaust gas after-treatment system (14) comprising at least one catalytic converter (15, 17) arranged along the exhaust duct (10); an oxygen sensor (18, 18*) housed along the exhaust duct (10) and arranged upstream of said at least one catalytic converter (15, 17); and a burner (21) suited to introduce the exhaust gases into the exhaust duct (10) upstream of the oxygen sensor (18, 18*) the method provides the steps of identifying the operation phases in which the internal combustion engine (1) is turned off and the burner (21) is turned on so that the oxygen sensor (18, 18*) is exclusively hit by the exhaust gases produced by the burner (21); acquiring the signal generated by the oxygen sensor (18, 18 * ); and using the signal generated by the oxygen sensor (18, 18*) to determine the objective fuel flow rate (ṁ F_OBJ ) and the objective air flow rate (ṁ A_OBJ ) to be fed to the burner (21) .

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