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1.发明申请公开(公告)号：US20190360415A1
公开(公告)日：2019-11-28
申请号：US15989232
申请日：2018-05-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Roberto Romanato
Abstract: Systems and methods are provided for controlling an aftertreatment system of a vehicle. A system operating mode is determined for an aftertreatment device having an electrical heating element. A weighting coefficient is set based on the determined system operating mode. An optimized electrical heat input and an optimized engine heat input are determined based on the weighting coefficient. The aftertreatment device is then controlled to a target temperature based on the optimized electrical heat input and the optimized engine heat input.
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公开(公告)号：US20180291827A1
公开(公告)日：2018-10-11
申请号：US15479603
申请日：2017-04-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lorenzo Disaro' , Roberto Romanato
CPC classification number: F02D41/0255 , F01N3/103 , F01N3/2013 , F01N3/2026 , F01N3/2066 , F01N2610/02 , F02B37/04 , F02B37/18 , F02D41/0007 , F02D2200/50 , F02M26/05 , F02M26/06 , Y02T10/144
Abstract: Provided are methods for warming up a vehicle exhaust treatment system prior to an engine start, wherein the vehicle includes an internal combustion engine (ICE), a supercharger capable of delivering air to an ICE intake, an exhaust gas treatment system including an exhaust gas treatment device and an upstream electric heating device and capable of accepting exhaust gas from the ICE, and optionally a turbocharger having a turbine in fluid communication with the exhaust gas treatment system. Methods include establishing fluid communication between the supercharger and the exhaust gas treatment system, engaging the supercharger to communicate air to the exhaust gas treatment system via the supercharger, and engaging the heating device. The method can further comprise reducing turbine resistance by reducing the power position of the turbine or opening a wastegate. The methods can further include first satisfying a start condition, and/or subsequently detecting a termination condition.
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公开(公告)号：US20190368402A1
公开(公告)日：2019-12-05
申请号：US16014107
申请日：2018-06-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Eduardo Jose Barrientos Betancourt , Roberto Romanato , Francesco Bechis , Francesco Concetto Pesce , Jaime Andres Cespedes Garcia
Abstract: A method for treating exhaust gas emitted by an internal combustion engine (ICE) in a hybrid architected motor vehicle with an electric motor. The method includes disposing a heater in the exhaust, disposing a first Lean NOx Trap (LNT) downstream of the heater, disposing a second LNT downstream of the first LNT, disposing a passive selective catalytic reduction (SCR) downstream of the second LNT, disposing a hydrocarbon oxidation catalyst downstream of the SCR. The method also includes connecting a controller to the heater, the controller executes a method of controlling the NOx emissions of the ICE, the method includes monitoring a torque demand for the vehicle, determining if the torque demand is large enough to cause the ICE to generate excessive NOx, operating the ICE at a torque less than the torque demand, and operating the motor with the ICE to provide sufficient torque to satisfy the torque demand.
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公开(公告)号：US10443533B2
公开(公告)日：2019-10-15
申请号：US15790605
申请日：2017-10-23
Applicant: GM Global Technology Operations LLC
Inventor： Gennaro Merlino , Francesco Concetto Pesce , Roberto Romanato
Abstract: A fuel injection control system is usable with an engine, e.g., a diesel engine of a mild hybrid electric vehicle. The control system includes an auxiliary battery, a high-voltage (HV) battery, e.g., 48 VDC, a switching circuit with first and second switching pairs, a controller, and a fuel injector system. The controller opens and closes the switches to command an electrical current from the auxiliary or HV battery according to a predetermined injector current profile. The fuel injector system has one or more control solenoids. Windings of the solenoids are electrically connectable to the HV battery during a boost phase of the profile via opening of the first switching pair and closing of the second switching pair, and to the auxiliary battery during peak, by-pass, hold, and end-of-injection phases of the profile via closing of the first switching pair and opening of the second switching pair.
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公开(公告)号：US20190120181A1
公开(公告)日：2019-04-25
申请号：US15793316
申请日：2017-10-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Roberto Romanato
Abstract: Described herein is a system and method of controlling an emissions control system for treating exhaust gas in a motor vehicle having an internal combustion engine. The emissions control system includes an electric diesel oxidation catalyst (eDOC) device having an electric heating element, disposed in a stream of the exhaust gas, a temperature sensor disposed at the eDOC device and configured to detect a temperature of the exhaust gas, and a controller that is configured to perform a model based control of the eDOC device based on a dual nested closed loop topology having an inner closed loop control and an outer closed loop control. The inner closed loop control is configured to control the power required for the eDOC device and outer closed loop control is configured to control the temperature of the eDOC device.
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Patent Agency Ranking
公开(公告)号：US20200025157A1
公开(公告)日：2020-01-23
申请号：US16037146
申请日：2018-07-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Roberto Romanato , Stefano Pellegrino
Abstract: An exhaust gas recirculation (EGR) system for a vehicle and method of operating the EGR system. The EGR system includes an internal combustion engine having an intake manifold; an aftertreatment device downstream of the internal combustion engine; an EGR valve downstream of the aftertreatment device; a main compressor; an electric compressor downstream of the main compressor; a low pressure (LP) loop coupled between the aftertreatment device and the intake manifold of the internal combustion engine; and an electronic control unit configured to operate the electric compressor depending on one or more operating parameters. The internal combustion engine uses exhaust from the LP loop without receiving exhaust from a high pressure (HP) loop.
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7.发明申请公开(公告)号：US20190309677A1
公开(公告)日：2019-10-10
申请号：US15945246
申请日：2018-04-04
Applicant: GM Global Technology Operations LLC
Inventor： Flavia Duma , Roberto Romanato , Paolo Pasero
Abstract: A hybrid powertrain includes an internal combustion engine having a crankshaft rotating at an engine speed, and a variable-geometry turbocharger (VGT) having a compressor and a turbine. The turbine has turbine vanes, and is configured to rotate in response to exhaust flow from the engine to thereby rotate the compressor. An electric machine is configured to selectively deliver motor torque to the crankshaft upon completion of a predetermined operating mode of the powertrain. The engine and electric machine have a corresponding speed that is responsive to acceleration and braking requests. A controller executes a method in which the controller coordinates vane position of the turbine vanes with the motor torque of the electric machine in response to engine speed, doing so during a zero pedal maneuver in which the acceleration and braking requests are both zero.
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公开(公告)号：US20190120161A1
公开(公告)日：2019-04-25
申请号：US15790605
申请日：2017-10-23
Applicant: GM Global Technology Operations LLC
Inventor： Gennaro Merlino , Francesco Concetto Pesce , Roberto Romanato
CPC classification number: F02D41/3005 , F02D41/20 , F02D2041/2013 , F02M51/061 , Y10S903/906
Abstract: A fuel injection control system is usable with an engine, e.g., a diesel engine of a mild hybrid electric vehicle. The control system includes an auxiliary battery, a high-voltage (HV) battery, e.g., 48 VDC, a switching circuit with first and second switching pairs, a controller, and a fuel injector system. The controller opens and closes the switches to command an electrical current from the auxiliary or HV battery according to a predetermined injector current profile. The fuel injector system has one or more control solenoids. Windings of the solenoids are electrically connectable to the HV battery during a boost phase of the profile via opening of the first switching pair and closing of the second switching pair, and to the auxiliary battery during peak, by-pass, hold, and end-of-injection phases of the profile via closing of the first switching pair and opening of the second switching pair.
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公开(公告)号：US09995196B2
公开(公告)日：2018-06-12
申请号：US15375960
申请日：2016-12-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Francesco Barba , Roberto Romanato , Paolo Olmo
CPC classification number: F01N9/00 , B01D53/0454 , B01D53/9481 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/0885 , F01N3/2013 , F01N3/2026 , F01N11/002 , F01N13/009 , F01N2570/14 , F01N2900/0416 , F01N2900/08 , F01N2900/1404 , F01N2900/1622 , Y02T10/26 , Y02T10/47
Abstract: A method and system for operating an aftertreatment system of an internal combustion engine is disclosed. A value of a storage efficiency for the lean nitrogen-oxide trap is determined. A value of an exhaust gas temperature is measured upstream of the lean nitrogen-oxide trap. An electric heated catalyst enabling condition may be fulfilled if the storage efficiency of the lean nitrogen-oxide trap is smaller than a threshold value thereof and the value of the exhaust gas temperature upstream of the lean nitrogen-oxide trap is greater than a lower threshold value and less than an upper threshold value. The electric heated catalyst is activated if the enabling condition is fulfilled. An inhibition enabling condition may be fulfilled if the value of storage efficiency is less than a second threshold value and the electric heated catalyst is deactivated and a denitrification of the lean nitrogen-oxides trap is started.
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公开(公告)号：US10690031B2
公开(公告)日：2020-06-23
申请号：US16014107
申请日：2018-06-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Eduardo Jose Barrientos Betancourt , Roberto Romanato , Francesco Bechis , Francesco Concetto Pesce , Jaime Andres Cespedes Garcia
Abstract: A method for treating exhaust gas emitted by an internal combustion engine (ICE) in a hybrid architected motor vehicle with an electric motor. The method includes disposing a heater in the exhaust, disposing a first Lean NOx Trap (LNT) downstream of the heater, disposing a second LNT downstream of the first LNT, disposing a passive selective catalytic reduction (SCR) downstream of the second LNT, disposing a hydrocarbon oxidation catalyst downstream of the SCR. The method also includes connecting a controller to the heater, the controller executes a method of controlling the NOx emissions of the ICE, the method includes monitoring a torque demand for the vehicle, determining if the torque demand is large enough to cause the ICE to generate excessive NOx, operating the ICE at a torque less than the torque demand, and operating the motor with the ICE to provide sufficient torque to satisfy the torque demand.
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