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1. 发明申请

US20230140817A1 VEHICLE FUEL CELL SYSTEM 有权
公开(公告)号：US20230140817A1
公开(公告)日：2023-05-04
申请号：US18048654
申请日：2022-10-21
申请人： VOLVO TRUCK CORPORATION
发明人： Carl LÖWSTEDT , Johan Lindberg , Fredrik Rahm
IPC分类号： B60L50/72 , H01M8/04089 , H01M8/04082 , H01M8/0444 , H01M8/04746 , H01M8/04858 , F17C9/00 , B60L58/30
摘要： The fuel cell system includes a fuel cell arranged to receive ambient air at a cathode inlet, and a tank arrangement fluidly connectable to the cathode inlet. The fuel cell system is configured to supply oxygen based fluid from the tank arrangement when a toxic substance level of the ambient environment is above the predetermined threshold limit.

2. 发明授权

US11499511B2 Method for controlling an internal combustion engine system 有权
公开(公告)号：US11499511B2
公开(公告)日：2022-11-15
申请号：US17270296
申请日：2018-08-23
申请人： VOLVO TRUCK CORPORATION
发明人： Fredrik Rahm , Johan Carlén Andersson
IPC分类号： F02M26/49 , F02M26/33 , F02M26/34 , F02D41/06 , F02D41/22
摘要： The invention relates to a method for controlling an internal combustion engine system (2), wherein the internal combustion engine system (2) is provided with an air intake duct (3), an exhaust gas duct (4) and an exhaust gas recirculation (EGR) system (5), wherein the EGR system (5) comprises an EGR conduit (6) that fluidly connects the exhaust duct (4) and the intake duct (3), and wherein a gas feeding device (7) is arranged in the EGR conduit (6), said gas feeding device (7) being configured to feed exhaust gas from the exhaust duct (4) to the intake duct (3) during operation of the engine system (2). The method is characterized in that it comprises the step of: detecting a risk of freezing of condensed water in the EGR conduit (6), and, in case such a risk is detected and in case the gas feeding device (7) is not in operation, operating the gas feeding device (7). The invention also relates to an internal combustion engine system (2) configured for being operated by such a method and to a vehicle (1) provided with such an engine system (2). The invention further relates to means for controlling the above method.

3. 发明申请

US20220371566A1 BRAKING ARRANGEMENT, VEHICLE COMPRISING SUCH A BRAKING ARRANGEMENT, AND METHOD OF CONTROLLING THE BRAKING ARRANGEMENT 有权
公开(公告)号：US20220371566A1
公开(公告)日：2022-11-24
申请号：US17741520
申请日：2022-05-11
申请人： Volvo Truck Corporation
发明人： Fredrik Rahm , Tove Audhav , Vijai Shankar Bhavani Shankar
IPC分类号： B60T13/68 , B60T13/26 , B60T13/74 , B60T17/00
摘要： The present invention relates to a braking arrangement for a vehicle, the braking arrangement comprising an electric machine electrically connectable to an electric power source, a brake compressor positioned in an air flow conduit, the brake compressor being configured to pressurize a flow of air and to exhaust the pressurized flow of air, and a compressor shaft mechanically connecting the electric machine and the brake compressor to each other, wherein the electric machine is configured to generate a torque on the compressor shaft for operating the brake compressor to pressurize the flow of air, the braking arrangement further comprising an air bearing arrangement, the air bearing arrangement being fluidly connectable to a pressurized brake air tank of the vehicle via an air bearing conduit, wherein the air bearing arrangement is suspending the compressor shaft to at least one of the electric machine and the brake compressor.

4. 发明授权

US11421631B2 Method for controlling an internal combustion engine arrangement 有权
公开(公告)号：US11421631B2
公开(公告)日：2022-08-23
申请号：US17312333
申请日：2018-12-14
申请人： VOLVO TRUCK CORPORATION
发明人： Johan Carlén Andersson , Fredrik Rahm
IPC分类号： F02M26/33 , F02M26/04 , F02D41/00 , F02M26/00
摘要： The present invention relates to a method for controlling an internal combustion engine arrangement (100) connected to an exhaust gas aftertreatment system (200), wherein the method is arranged to control a gas heating device (122), as well as a gas feeding arrangement to direct a flow of intake air through the exhaust gas recirculation conduit (112) from the intake system to the exhaust system, the flow of intake air being directed through the gas heating device before the intake air enters the exhaust gas aftertreatment system, in response to determining a requested start of the internal combustion engine to heat the aftertreatment system before starting the engine.

5. 发明授权

US11421611B2 Internal combustion engine 有权
公开(公告)号：US11421611B2
公开(公告)日：2022-08-23
申请号：US17256498
申请日：2018-06-29
申请人： VOLVO TRUCK CORPORATION
发明人： Fredrik Rahm , Jens Pedersen , Johan Carlén Andersson
IPC分类号： F02D41/00 , F02M26/22 , F02B37/20 , F02B37/24 , F02B39/04 , F02B39/10 , F02B67/06 , F02D13/02 , F02D41/26 , F02M35/10 , F02M26/05 , F02M26/16 , F02M26/34 , F02D41/14
摘要： The invention relates to an internal combustion engine comprising a crankshaft, one or more cylinders including a cylinder head, a piston, a combustion chamber, one or more intake valves, one or more exhaust valves, an intake system configured for feeding intake air to the engine, an exhaust system configured for conveying exhaust gas away from the engine, a pressure charging system connected to the intake system and an exhaust gas recirculation (EGR) system arranged to feed branched off exhaust gas from the exhaust system to the intake system via an EGR conduit wherein: —the internal combustion engine includes a valve actuation device configured to allow for late or early closing of the intake valves in accordance with late or early Miller-type valve timing, and wherein—the EGR system includes a gas feeding device configured to feed exhaust gas through the EGR conduit in modes of operation wherein the pressure in the intake system exceeds the pressure in the exhaust system. Additionally, a method of improving efficiency of an internal combustion engine is described.

6. 发明授权

US11408330B2 Method of operating a four stroke internal combustion engine system 有权
公开(公告)号：US11408330B2
公开(公告)日：2022-08-09
申请号：US17256482
申请日：2018-06-29
申请人： VOLVO TRUCK CORPORATION
发明人： Martin Bauer , Fredrik Rahm
IPC分类号： F02B37/04 , F02B37/00 , F02B39/10 , F02D29/06 , F02D41/00 , F02M35/10 , F02D9/02 , F02M35/12 , F04C2/12
摘要： The invention relates to a method of operating a four stroke internal combustion engine system (1), the engine system (1) comprising:—a four stroke internal combustion engine (2) provided with an intake duct (5),—a turbo compressor (6″) arranged to compress intake flow in the intake duct (5), and—a displacement machine (7) provided in the intake duct (5) downstream the turbo compressor (6″), wherein the displacement machine (7) is arranged to displace intake flow from an inlet to an outlet thereof. The method comprises the step of: operating the displacement machine (7) in a first mode where a pressure ratio (PR) given by a pressure at the outlet of the displacement machine (7) divided by a pressure at the inlet of the displacement machine (7) is substantially equal to 1. The invention also relates to a four stroke internal combustion engine system arranged to be operated by the above method.

7. 发明申请

US20230102528A1 VEHICLE ENERGY MANAGEMENT SYSTEM, VEHICLE COMPRISING SUCH VEHICLE ENERGY MANAGEMENT SYSTEM, AND METHOD OF CONTROLLING VEHICLE ENERGY MANAGEMENT SYSTEM 有权
公开(公告)号：US20230102528A1
公开(公告)日：2023-03-30
申请号：US17949326
申请日：2022-09-21
申请人： Volvo Truck Corporation
发明人： Fredrik Larsson , Tove Audhav , Fredrik Rahm
IPC分类号： B60H1/14 , B60H1/00
摘要： A vehicle energy management system connectable to a vehicle and configured to control a valve arrangement to deliver a flow of pressurized air to a heat receiving structure when the vehicle is operated in a vehicle braking mode and a temperature level of the heat receiving structure is below a maximum limit of a predetermined temperature range.

8. 发明申请

US20220410658A1 COOLING SYSTEM, AND A METHOD OF CONTROLLING A COOLING SYSTEM 有权
公开(公告)号：US20220410658A1
公开(公告)日：2022-12-29
申请号：US17808144
申请日：2022-06-22
申请人： VOLVO TRUCK CORPORATION
发明人： Vijai Shankar BHAVANI SHANKAR , Arne Anderson , Fredrik Rahm , Tove Audhav
IPC分类号： B60H1/00 , B60H1/03
摘要： A cooling system for a vehicle propelled by an electric machine. The cooling system is arranged, when the vehicle is operated in a braking mode, to control a first and a second radiator valve to direct a flow of fluid from a radiator through a first fluid circuit and prevent the flow of fluid from the radiator to enter the second fluid circuit, control a compressor arrangement to flow a refrigerant in a direction from a heat exchanger to a condenser of a third fluid conduit, and control a second circuit valve arrangement to direct a heat source fluid to circulate through a heat exchanger and an electric heat source.

9. 发明授权

US11519328B2 Method for operating an internal combustion engine 有权
公开(公告)号：US11519328B2
公开(公告)日：2022-12-06
申请号：US16954078
申请日：2017-12-20
申请人： VOLVO TRUCK CORPORATION
发明人： Bengt Lassesson , Fredrik Rahm
IPC分类号： F02B75/00 , F02B75/02
摘要： The invention relates to a method (100) for operating an internal combustion engine (2), such as an internal combustion engine of a vehicle (1), the engine (2) comprising an engine cylinder (3) at least partly defining a combustion chamber (4) and a reciprocating piston (5), a number of inlet valves (20) in fluid communication with the combustion chamber and a number of exhaust valves (30) in fluid communication with the combustion chamber, wherein any one of the inlet valves and the outlet valves comprises at least one flow control valve. The method comprises the following steps: opening (105) at least one of the inlet valves and introducing the incoming fluid medium into the cylinder (3) of the engine by performing an intake stroke (S1); compressing (110) the trapped incoming fluid medium in a first compression stroke (CS1) of the cylinder (3), while having the number of the inlet valves and the number of the exhaust valves in a closed state; injecting (115) a quantity of fuel into the cylinder (3) and combusting said injected fuel; performing (120) a first work stroke (WS1) to produce power to a crank shaft of the engine, while controlling said flow control valve to partly exhaust burnt gases at the end of the work stroke; additionally compressing (125) remaining fluid medium in an additional compression stroke (CS2) of the cylinder (3), while having the number of the inlet valves and the number of the exhaust valves in a closed state; additionally injecting (130) an additional quantity of fuel into the cylinder (3); additionally performing (135) an additional work stroke (WS2) to produce power to the crank shaft of the engine, while controlling said flow control valve to partly exhaust burnt gases at the end of the additional work stroke; and opening (180) at least one of the exhaust valves and permitting partly burnt gases to expel from the cylinder via said at least one exhaust valve by performing an exhaust stroke (ES).

10. 发明授权

US11346309B2 Method for operating an internal combustion engine system 有权
公开(公告)号：US11346309B2
公开(公告)日：2022-05-31
申请号：US17270309
申请日：2018-08-23
申请人： VOLVO TRUCK CORPORATION
发明人： Fredrik Rahm , Johan Carlén Andersson
IPC分类号： F02M26/50 , F02M26/33 , F02M26/34 , F02M26/35 , F02M26/36 , F02M26/49 , F02D41/06 , F02D41/22 , F02D41/00
摘要： The invention relates to a method for operating an internal combustion engine system (2), wherein the internal combustion engine system (2) is provided with an air intake duct (3), an exhaust gas duct (4) and an exhaust gas recirculation (EGR) system (5), wherein the EGR system (5) comprises an EGR conduit (6) that fluidly connects the exhaust duct (4) and the intake duct (3), and wherein a gas feeding device (7) configured to feed exhaust gas from the exhaust duct (4) to the intake duct (3) is arranged in the EGR conduit (6). The method is characterized in that it comprises the step of: detecting an indication of accumulated deposits of soot, hydrocarbons or other contaminants in the gas feeding device (7) by determining whether a rotational friction of a rotary member (71, 72) of the gas feeding device (7) exceeds a threshold value. The invention also relates to an internal combustion engine system (2) configured for being operated by such a method and to a vehicle (1) provided with such an engine system (2). The invention further relates to means for controlling the above method.

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