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公开(公告)号：US11560858B2
公开(公告)日：2023-01-24
申请号：US17649872
申请日：2022-02-03
发明人： Johan Lindberg
摘要： The invention relates to a method for controlling gaseous fuel pressure in an accumulator (12) of a fuel system (10) for a combustion engine (102) of a vehicle (100), wherein the method comprises the steps of: determining a nominal amount of gaseous fuel to be introduced into the accumulator; introducing less gaseous fuel into the accumulator than the determined nominal amount by reducing or closing an inlet valve (24), which inlet valve is adapted to regulate input of gaseous fuel to the accumulator; and while the inlet valve is reduced or closed, performing at least one injection of gaseous fuel coming from the accumulator into at least one combustion chamber (104a-f) of the combustion engine by at least one injector (14a-f) of the fuel system, which at least one injection contributes to combustion in the combustion engine, thereby reducing pressure in the accumulator. The invention also relates to a corresponding fuel system (10).
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公开(公告)号：US11499495B2
公开(公告)日：2022-11-15
申请号：US17508475
申请日：2021-10-22
申请人： Cummins Inc.
摘要： A method is disclosed of controlling operation of a fuel injector in response to measuring a quantity of fuel injected by the fuel injector from a fuel accumulator to an engine cylinder during operation of a fuel pump that delivers fuel to the accumulator, comprising: determining an average pressure of the fuel accumulator during a first time period before a fuel injection event; predicting a mass of fuel delivered to the fuel accumulator during a pumping event (Qpump); determining an average pressure of the fuel accumulator during a second time period after the fuel injection event; estimating a leakage of fuel; computing the injected fuel quantity by adding the average pressure during the first time period to Qpump, and subtracting the average pressure during the second time period and the leakage; and using the computed injected fuel quantity to control operation of the fuel injector.
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公开(公告)号：US11306674B2
公开(公告)日：2022-04-19
申请号：US17207475
申请日：2021-03-19
发明人： Chris Paul Glugla
摘要： Methods and systems are provided for operating a cylinder of an engine including a pre-chamber ignition system. In one example, a method may include determining amounts of pre-chamber gases in the cylinder prior to combustion, and adjusting an amount of fuel injected into the cylinder based on the amounts of pre-chamber gases in the cylinder. In this way, cylinder fueling may be compensated for additional air and/or fuel from the pre-chamber gases, which may increase an accuracy of the cylinder fueling and increase cylinder efficiency.
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公开(公告)号：US11280304B1
公开(公告)日：2022-03-22
申请号：US17099162
申请日：2020-11-16
摘要： A fuel pressure regulator includes a fuel inlet; a fuel outlet; a seating surface; and a valve member assembly. The valve member assembly includes a poppet and also includes a sealing member which is centered about a valve member assembly axis, is annular in shape, and includes a sealing member surface. The valve member assembly is moveable between 1) a closed position in which the sealing member surface annularly engages the seating surface, thereby preventing fuel flow from the fuel inlet to the fuel outlet and 2) an open position in which at least a portion of the sealing member surface is spaced apart from the seating surface, thereby allowing fuel flow from the fuel inlet to the fuel outlet. A spring biases the valve member assembly toward the closed position and is centered about a spring axis which is laterally offset relative to the valve member assembly axis.
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公开(公告)号：US11215150B1
公开(公告)日：2022-01-04
申请号：US17219060
申请日：2021-03-31
发明人： Keun Soo Kim , Jung Hoon Park , Dong Hyun Kim
摘要： The fuel filling system of a fuel pump reservoir includes: a reservoir mounted in a fuel tank; a fuel pump mounted in the reservoir and configured to deliver the fuel in the reservoir to an engine and to discharge a portion of the fuel to a fuel branch line; a relief valve disposed on a fuel supply line and configured to release pressure applied to the fuel supply line; a first jet pump configured to fill the reservoir with the fuel using fuel jet flow from the fuel branch line; a second jet pump configured to fill the reservoir with the fuel using fuel jet flow from a fuel return line; and a fuel pump control module (FPCM) configured to control operation of the second jet pump based on a driving mode of a vehicle.
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公开(公告)号：US11193464B2
公开(公告)日：2021-12-07
申请号：US16795946
申请日：2020-02-20
申请人： DENSO CORPORATION
摘要： A fuel injection valve includes a needle valve that controls communication between a high pressure chamber and an injection hole, a follower valve provided inside a control chamber controlled by fuel pressure inside an intermediate chamber, and an open-close valve that controls communication between a first passage and a low pressure passage and communication between a second passage and the low pressure passage. The fuel injection valve is configured to control the gradient of the fuel injection rate from the injection hole with an improved configuration.
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公开(公告)号：US11053904B2
公开(公告)日：2021-07-06
申请号：US16633648
申请日：2018-06-11
申请人： Robert Bosch GmbH
发明人： Klaus Jung , Nelly Krause , Tobias Keller
摘要： A fuel injector is described which is able to be preassembled in a receiving opening of a fuel-distributor line in a loss-proof manner in a structural unit in the form of a fuel charge assembly for transport to the final assembly at the vehicle manufacturer. A radial support disk for preventing the loss of the fuel injector is disposed on the inflow-side end of the inlet pipe by press-fitting the radial support disk in the receiving opening. The fuel injector is particularly suitable for the direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having externally supplied ignition.
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公开(公告)号：US11035291B2
公开(公告)日：2021-06-15
申请号：US16828035
申请日：2020-03-24
发明人： Richard Cornwell
摘要： A marine outboard motor is provided with an internal combustion engine comprising an engine block defining at least one cylinder, an air intake configured to deliver a flow of air to the at least one cylinder; and an air intake duct forming part of an air intake path for delivering the flow of air to the air intake. The engine further includes a flow sensing arrangement located in the air intake duct and comprising a flow meter configured to generate a signal indicative of a flow rate of the flow of air through the air intake duct, and a bluff body located in the air intake duct upstream of the flow meter, wherein the flow meter is a vortex shedding flow meter.
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9.发明授权公开(公告)号：US11008951B2
公开(公告)日：2021-05-18
申请号：US16652187
申请日：2018-10-02
申请人： Walbro LLC
发明人： Gary J. Burns , William E. Galka , Bradley J. Roche , Albert L. Sayers , David L. Speirs , Eric G. Zbytowski
摘要： In at least some implementations, a throttle body assembly includes a body that has multiple throttle bores, multiple throttle valve heads received one in each of the throttle bores, at least one throttle valve shaft to which the throttle valve heads are coupled, and at least one of a fuel metering valve and a vapor separator carried by the body.
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公开(公告)号：US10989129B1
公开(公告)日：2021-04-27
申请号：US16719726
申请日：2019-12-18
发明人： Chris Paul Glugla
摘要： Methods and systems are provided for operating a cylinder of an engine including a pre-chamber ignition system. In one example, a method may include determining amounts of pre-chamber gases in the cylinder prior to combustion, and adjusting an amount of fuel injected into the cylinder based on the amounts of pre-chamber gases in the cylinder. In this way, cylinder fueling may be compensated for additional air and/or fuel from the pre-chamber gases, which may increase an accuracy of the cylinder fueling and increase cylinder efficiency.
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