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公开(公告)号：US20230015517A1
公开(公告)日：2023-01-19
申请号：US17952494
申请日：2022-09-26
发明人： Sreenivasa Rao Gubba , Bhaskar Tamma , Victor Manuel Salazar , Adam Edgar Klingbeil , Thomas Michael Lavertu , Roy James Primus , John Dowell , Kevin Bailey , Kevin McElhaney
摘要： A mixing structure can include a body having first conduits, mixture conduits, and second conduits extending through the body to the internal volume. The first conduits may be closer to a first side of the body than the mixture conduits and the second conduits. The second conduits may closer to another side of the body than the first conduits and the mixture conduits. The internal volume may receive liquid streams from an injector. The first conduits and the second conduits may receive gas streams from outside the body. The body may thermally modify the gas streams and entrain the gas streams into the liquid streams in the internal volume. The mixture conduits may be positioned to direct the gas streams entrained into the liquid streams out of the body in directions directed toward the second side of the body and away from the first side of the body.
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公开(公告)号：US11454165B2
公开(公告)日：2022-09-27
申请号：US17160356
申请日：2021-01-27
摘要： An engine and method for achieving superior operational benefits by application of the General Cycle for heat engines. A two-stroke internal combustion engine having an Atkinson ratio A and a compression ratio RC, the compression ratio having a value in the range from 19 to 30, and an Atkinson ratio selected such that the product of Atkinson ratio and compression ratio is near to and generally greater than 36. The best values of this product, ARC, vary slightly with the choice of compression ratio according to the following relationship: ARC≥36.33+8788e−0.375Rc. The engine includes a conventional exhaust valve and may include a high ratio of stroke length to bore, or may be of an opposed piston construction.
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公开(公告)号：US11326507B2
公开(公告)日：2022-05-10
申请号：US17365781
申请日：2021-07-01
申请人： Caterpillar Inc.
发明人： David Y. Chang
IPC分类号： B60T7/12 , F02B1/12 , F02M26/01 , F02D37/02 , F02B3/06 , F02B75/12 , F02D13/02 , F02D41/00 , F02D41/38
摘要： In one aspect, an engine ignition apparatus for a natural gas engine may include a housing including a drive piston, a floating piston, a controllable hydraulic fluid chamber located between the drive piston and the floating piston, and an ignition chamber acted on by the floating piston, the ignition chamber having an outlet formed by a plurality of orifices, the outlet being in direct communication with a combustion chamber of the engine. In another aspect, an engine ignition apparatus for a natural gas engine may include, among other features, a controllable valve connected to a hydraulic fluid chamber, and configured to open and release a hydraulic fluid from the hydraulic fluid chamber, and to close. In still another aspect, a method for controlling an engine ignition apparatus for an engine includes, among other features, controlling a volume of a hydraulic fluid chamber of an ignition apparatus.
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公开(公告)号：US11187140B2
公开(公告)日：2021-11-30
申请号：US16829715
申请日：2020-03-25
发明人： Joachim Schwarte , Samuel Vogel
摘要： A method for operating an internal combustion engine including a step of concurrently introducing at least two combustible fuel jets into a combustion chamber of an internal combustion engine. A first combustible fuel jet of the at least two combustible fuel jets is ignited at an ignition time point. In a first operating mode of the internal combustion engine a second combustible fuel jet which is different from the first combustible fuel jet of the at least two combustible fuel jets is ignited after the ignition time point.
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公开(公告)号：US11181069B2
公开(公告)日：2021-11-23
申请号：US17011170
申请日：2020-09-03
摘要： A diesel engine system is provided, which includes a piston having a cavity dented downwardly in a crown surface thereof and having a bottom part, a peripheral part dented so as to be convex radially outward, and a lip part formed above the peripheral part and protruding so as to be convex radially inward in a cross-sectional view. An injection controller causes an injector to perform, during operation in a given operating range, a main injection in which injected fuel is directed to the lip part, and an after-injection in which a smaller amount of the fuel than the main injection is injected at a given timing later than the main injection in an expansion stroke. An injection interval period from an end of the main injection to a start of the after-injection is shorter as a temperature parameter related to a progress of a warmup of engine increases.
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公开(公告)号：US11174826B2
公开(公告)日：2021-11-16
申请号：US17008860
申请日：2020-09-01
申请人： IHI CORPORATION
发明人： Yutaka Masuda , Yoshiyuki Umemoto , Jun Teramoto
摘要： Provided is an engine, including: a cylinder; a piston accommodated in the cylinder; a combustion chamber facing the piston; a sliding portion (large-diameter portion) configured to perform a stroke motion together with the piston; a hydraulic surface of the sliding portion facing a side opposite to the combustion chamber; a hydraulic chamber, which the hydraulic surface faces; and an auxiliary hydraulic chamber, which communicates with the hydraulic chamber, and has a volume changeable in accordance with a hydraulic pressure in the hydraulic chamber.
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公开(公告)号：US11168641B2
公开(公告)日：2021-11-09
申请号：US17010124
申请日：2020-09-02
摘要： A diesel engine system has a piston in which a cavity is formed in a crown surface. The cavity has a bottom part, a peripheral part dented so as to be convex radially outward in a cross-sectional view, and a lip part formed above the peripheral part and protruding so as to be convex radially inward in the cross-sectional view. An injection controller causes an injector to perform, during operation in a given operating range, a main injection in which injected fuel is directed to the lip part, and an after-injection in which a smaller amount of fuel than the main injection is injected at a given period later than the main injection in an expansion stroke. An injection interval period that is a period of time from an end of the main injection to a start of the after-injection is shorter as an injection pressure of fuel increases.
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8.发明申请公开(公告)号：US20210269033A1
公开(公告)日：2021-09-02
申请号：US17315713
申请日：2021-05-10
申请人： Cummins Inc.
发明人： Chia-Siung Yu
摘要： A method includes: receiving, by a controller of a vehicle, operation data indicative of a duty cycle for the vehicle, wherein the duty cycle is a substantially repeatable set of vehicle or vehicle component operations for a particular event or for a predefined time period; identifying, by the controller, a desired vehicle duty cycle from a population of vehicle duty cycles based on the operation data indicative of the duty cycle for the vehicle and on a desired operating parameter of the vehicle; receiving, by the controller, a set of trim parameters that are electronic operational parameters associated with the desired vehicle duty cycle; and controlling, by the controller, one or more operating points of the vehicle based on the set of trim parameters.
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公开(公告)号：US11041449B2
公开(公告)日：2021-06-22
申请号：US16295289
申请日：2019-03-07
摘要： A throttle valve having: a valve body; an intake duct obtained in the valve body; a throttle plate arranged in the intake duct; a shaft mounted so as to rotate, supporting the throttle plate; an electric motor; a gear transmission, which couples the electric motor to the shaft and has an end gear which is integral with the shaft; a return spring, which is designed to rotate the throttle plate towards a closing position; a striking element, which is obtained in the valve body and establishes an intermediate position of partial opening; and a countering spring, mounted on the end gear, which is designed to rotate the throttle plate towards the intermediate position and has one end which is designed to rest against the striking element during the rotation of the end gear.
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公开(公告)号：US10989135B2
公开(公告)日：2021-04-27
申请号：US16715099
申请日：2019-12-16
发明人： Takeru Matsuo , Yoshie Kakuda , Sangkyu Kim , Daisuke Shimo
摘要： A control device for a compression ignition engine is provided, which causes an injector to perform a pre-injection and a main injection, sets fuel injection timings of these injections so that an interval between a first peak of a heat release rate resulting from the combustion of fuel injected by the pre-injection and a second peak of the heat release rate resulting from the combustion of fuel injected by the main injection becomes an interval to make pressure waves caused by these combustions cancel each other out, and when an increase of a wall surface temperature of a combustion chamber is detected, controls the injector to reduce the injection amount and retard the injection timing of the pre-injection compared with a case where the temperature increase is not detected, under a condition that engine load and speed are the same.
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