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JP2019506561A |
Fuel flow control in a uniflow scavenging two-stroke opposed-piston engine is based on comparison and selection of overall airflow parameters and / or fuel delivery options derived from trapped airflow parameters, depending on torque req...
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JP6475243B2 |
A trapped burned gas fraction is controlled in a two-stroke cycle opposed-piston engine with uniflow scavenging by adjusting an external EGR setpoint in real time. The adjusted setpoint is used to control EGR flow in the engine's air han...
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JP6460114B2 |
A reciprocating engine has a piston which reciprocates in a cylinder due to explosion pressure produced in a combustion chamber (124) formed in the cylinder (110). The reciprocating engine includes: a liquid fuel supply unit (148) that s...
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JP6455312B2 |
To provide a uniflow scavenging type 2-cycle engine attaining uniformity of concentration of fuel gas and active gas sucked through one open-shut motion at a scavenging port.A uniflow scavenging type 2-cycle engine includes: a fuel injec...
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JP6455085B2 |
To provide a uniflow scavenging two-cycle engine for promptly stopping the injection of fuel gas.A uniflow scavenging two-cycle engine comprises: a cylinder having a combustion chamber formed therein; a piston sliding within the cylinder...
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JP6446193B2 |
An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f1). The engine has a second valve, which controls the quantity of fuel supplie...
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JP2018193996A |
To propose a large diesel engine which allows particularly good introduction of a liquid fuel into a combustion chamber by achieving economical, efficient and low-emission operation.There is proposed a large diesel engine, in particular ...
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JP6432285B2 |
To provide a uniflow scavenging two-cycle engine for making uniform concentrations of fuel gas and active gas drawn in during one time of opening or closing a scavenging port.A uniflow scavenging two-cycle engine comprises: a cylinder ha...
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JP6432081B2 |
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JP6431074B2 |
A combustion chamber construction for opposed-piston engines includes an elongated, bilaterally symmetrical shape referenced to a major axis and a pair of injection ports located on the major axis when the pistons are near respective top...
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JP6425240B2 |
To improve air charging efficiency to a scavenging passage by generating gas flow in a piston groove simultaneously with communication of the piston groove with an air port.A piston groove 8 formed on a peripheral face of a piston has a ...
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JP6411200B2 |
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JP6411755B2 |
To provide a uniflow two-stroke engine that suppresses blowout of intake air by a simple configuration.The uniflow two-stroke engine E includes: a cylinder 22 reciprocably receiving a piston 23; an exhaust port 31 provided at an upper en...
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JP6412582B2 |
Methods are described for operating a two-stroke cycle, compression-ignition, opposed-piston engine using a self-igniting, low reactivity fuel which manages trapped temperature and trapped combustion residue within the combustion chamber...
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JP6411159B2 |
To improve certainty in supplying air to a scavenging passage through a piston groove.A gas vent port 10 is formed on a cylinder wall 2 at a lower part of a scavenging port 6a in adjacent thereto. The gas vent port 10 is independent from...
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JP6410813B2 |
The invention relates to an internal combustion engine, provided with a crankshaft (4) and one or several cylinders (1) provided on the wall thereof with exhaust ports (2) and closed at the top by a cylinder head (3) provided with intake...
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JP6404839B2 |
A two-stroke cycle, turbo-driven, opposed-piston engine with one or more ported cylinders and uniflow scavenging has no supercharger. The engine includes a high pressure EGR loop and a pump in the EGR loop to boost the pressure of the re...
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JP6359734B1 |
To provide a 2-stroke engine having good fuel economy and clean exhaust gas. A two-stroke engine 10 has a combustion piston 111 housed in a combustion piston cylinder 210 and forming a combustion chamber together with the combustion pist...
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JP6343176B2 |
The present invention is to prevent mixing of fresh air and an air-fuel mixture when a throttle valve is fully opened and increase a delivery ratio. A main nozzle (30) is surrounded by a tunnel-like air flow guiding member (52). The air ...
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JP2018513938A |
The air treatment system of the opposed piston engine comprises an externally assisted pump element such as an electrically assisted compressor, an electrically assisted supercharger, or an electrically assisted turbocharger. [Selection ...
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JP2018080613A |
To provide a two-cycle engine capable of improving the acceleration performance with a simple structure.An intake passage 44 having an air passage 21 and a mixture passage 22 is provided on one of the right and left sides of a cylinder 1...
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JP6314172B2 |
Disclosed is a large turbocharged two-stroke compression ignited internal combustion engine (1) of a crosshead type which is capable of operating with an SCR reactor under various engine load conditions. The engine (1) comprises: a turbo...
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JP6301998B2 |
Disclosed is a large turbocharged two-stroke self-igniting internal combustion engine with a plurality of cylinders (1) having scavenging ports (22) and exhaust valves (4). The exhaust valves (4) move in opposite directions between close...
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JP6295487B1 |
To efficiently and surely collect fuel in a spark plug of a combustion chamber in a conventional internal combustion engine. It is difficult to improve combustion efficiency because it is not possible to form a flammable layer that makes...
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JP6298552B2 |
A cylinder cover (22) for a large two-stroke turbocharged compression ignited internal combustion engine. The cylinder cover comprises an annular body with an upper side (47) and a lower side (48). The annular body has a lower portion (3...
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JP6293525B2 |
To provide a uniflow two-stroke engine that suppresses blowout of intake air by a simple configuration.The uniflow two-stroke engine E includes: a cylinder 22 reciprocably receiving a piston 23; an exhaust port 31 provided at an upper en...
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JP2018028306A |
To provide a two-cycle engine which suppresses an increase of the number of part items, and can increase a flow-in amount of air into a scavenge passage, and its manufacturing method.A two-cycle engine has first and second scavenge passa...
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JP6276724B2 |
A peripheral wall portion of a piston is provided with a through hole penetrating through the peripheral wall portion. A cylinder is provided with a scavenging passage having a first opening being open in a bore surface and configured to...
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JP6276789B2 |
To provide a mixing system that does not use dedicated mixing units and is reduced in pressure loss in feeding a reductant to an SCR reactor, in a large turbocharged two-stroke diesel engine of the crosshead type.The large turbocharged t...
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JP6273051B2 |
A two-stroke, opposed-piston engine with one or more ported cylinders and uniflow scavenging includes an exhaust gas recirculation (EGR) construction that provides a portion of the exhaust gasses produced by the engine for mixture with c...
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JP2018013076A |
To provide a suction pipe of a stratified scavenging type engine, which can improve the degree of freedom in design of the shape and layout of an air-fuel mixture passage and an air passage, can continuously smoothly change the cross-sec...
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JP6265791B2 |
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JP6265790B2 |
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JP6267736B2 |
A fuel valve (50) for injecting low flashpoint liquid fuel into the combustion chamber of a large two-stroke turbocharged self-igniting internal combustion engine. The fuel valve (50) is provided with: an elongated fuel valve housing (52...
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JP6258445B2 |
The present invention relates to an internal combustion engine and, particularly, to a cylinder liner (1) for a two-stroke crosshead engine. The cylinder liner (1) comprises: a first end part coupled to a cylinder cover (22); scavenging ...
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JP6255318B2 |
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JP6255331B2 |
To inhibit connection of a portion lower than a piston of a cylinder with a scavenging passage in order to carry out stratified scavenging in a uniflow two-stroke engine.A uniflow two-stroke engine E includes a cylinder sleeve 19, an exh...
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JP6242909B2 |
An internal combustion engine enabling asymmetric port timing has an engine mechanism including a crankshaft having a crankpin to which each piston of an opposed pair of pistons is connected and by which the pistons are reciprocatable in...
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JP6235653B2 |
Disclosed is a crosshead type large two-stroke turbocharge compression ignition internal combustion engine. The engine includes: a turbocharger including an exhaust gas operating turbine connected with a compressor to deliver pressurizin...
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JP6222244B2 |
A uniflow scavenging 2-cycle engine that includes: a plurality of injection valves (160) provided at a fuel supply path (170) in parallel to each other and control ejection of fuel gas from injection ports (132e); a hydraulic pump (174) ...
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JP6215848B2 |
Exhaust temperature management strategies for an opposed-piston, two-stroke engine with EGR are based on control of a ratio of the mass of fresh air and external EGR delivered to a cylinder to the mass of the trapped charge (density of t...
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JP6203325B2 |
Disclosed is a uniflow large turbocharged two-stroke self-igniting internal combustion engine. The engine comprises: a plurality of cylinders (1) having scavenging ports (17) and an exhaust valve (4); an intake system which allows scaven...
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JP2017166466A |
To provide an internal combustion engine capable of improving fuel economy of an engine as an engine performance, and exhaust gas performance.An internal combustion engine with a two-cycle engine suction port includes a suction line havi...
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JP6191036B2 |
In the carburetor (1) according to the present invention, three downstream body passages (10b, 11b, 12b) in the body (2) communicate with three valve passages (20, 21, 22) in the valve element (4), and the valve element (4) rotates betwe...
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JP6188975B2 |
A large-scale turbo charger two-stroke compression ignition type internal combustion engine with a crossed head comprises a plurality of cylinders each of which comprises a cylinder cover, an exhaust valve and an exhaust pipeline. The cy...
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JP2017101676A |
To provide an internal combustion engine and a method of optimizing exhaust gas after-treatment arrangement.An internal combustion engine 1, in particular, a two-stroke ship engine, preferably a cross-head type internal combustion engine...
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JP6132184B2 |
The invention is related to an inlet valve (1) for an large two-stroke uniflow engine, for locking and opening a gas flow passage leading through a ring (4) of inlet slits leading through a cylinder wall (3) of a cylinder of said engine....
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JPWO2016072391A1 |
The uniflow scavenging two-cycle engine (100) surrounds and compresses a cylinder (110) in which a combustion chamber (124) is formed, a piston (112), and one end of the cylinder in the stroke direction of the piston. A scavenging chambe...
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JP6117695B2 |
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JP6115045B2 |
A uniflow-scavenging-type two-cycle engine according to the present invention includes: a cylinder (110) in which a combustion chamber is formed; a piston that slides in the cylinder; a scavenging port (122) that is provided at one end o...
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