A large two-stroke compression-ignited internal combustion engine with fuel injection system for a low flashpoint fuel and a fuel valve therefore
A technology of compression ignition and fuel valve, which is applied in the direction of fuel injection device, fuel system, charging system, etc., and can solve the problems of fragility and durability
Active Publication Date: 2020-06-19
曼能解决方案(曼能解决方案德国股份公司)分公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
As a result, these valves for injecting ignition fluid are much smaller than fuel valves for injecting low flash point fuels, and such small valves are often too fragile to be durable in harsh environments
Method used
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Embodiment Construction
[0068] In the following detailed description, the engine will be described with reference to a large two-stroke, low-speed, single-flow, turbocharged, compression-ignition engine with crossheads in an exemplary embodiment, but it should be understood that the engine could be of another type, such as with or Two-stroke Otto, four-stroke Otto or diesel type without turbocharging, with or without exhaust gas recirculation.
[0069] figure 1 , figure 2 with image 3 A large low-speed turbocharged two-stroke diesel engine with crankshaft 8 and crosshead 9 is shown. image 3 A diagrammatic representation of a large low-speed turbocharged two-stroke diesel engine with its intake and discharge systems is shown. In this exemplary embodiment, the engine has six cylinders in line (in series, in a linear arrangement). Large low-speed turbocharged two-stroke diesel engines typically have four to fourteen cylinders in-line carried by cylinder frames 23 carried by the engine frame 11 . ...
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The invention provides a large two-stroke compression-ignited internal combustion engine and a fuel valve therefore. The fuel valve comprises a valve housing, a nozzle, a fuel inlet port for connection to a source of pressurized low flashpoint fuel, an actuation fluid port, a valve needle in a longitudinal bore in the fuel valve that allows flow of fuel from a fuel cavity to the nozzle when the valve needle is in its open position, a pump piston connected to an actuation piston, an actuation chamber connected to the actuation fluid port, a pump chamber fluidically connected to the fuel cavityand fluidically connected to the fuel inlet port, a sealing liquid inlet port for connection to a source of pressurized sealing liquid, a sealing oil flow path connecting the sealing liquid inlet portto the longitudinal bore, an ignition liquid inlet port for connection to a source of pressurized ignition liquid, an ignition liquid conduit extending from the ignition liquid inlet port to a clearance between the bore and the pump piston for sealing the pump pistonin the first bore and for delivering a quantity of ignition liquid to the pump chamber.
Description
technical field [0001] The present disclosure relates to a large low speed operating two stroke compression ignition internal combustion crosshead engine with a fuel injection system for injecting low flash point fuel into the combustion chamber. Background technique [0002] Large two-stroke single-flow turbocharged compression-ignition internal combustion crosshead engines are commonly used in the propulsion systems of large ships or as prime movers in power plants. Their sheer size, weight and power output set them apart from common combustion engines and put the large two-stroke turbocharged compression-ignition internal combustion engines in a class of their own. [0003] Large two-stroke compression-ignition internal combustion engines typically run on liquid fuels such as heating oil or heavy fuel oil, but increasing environmental concerns have led to a move toward the use of alternative fuels such as gas, methanol, coal slurries, petroleum coke, and the like. One gr...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02M61/10F02M61/18
CPCF02M61/10F02M61/18F02B43/10F02D19/06F02M21/02F02M43/04F02M57/02F02M57/026F02B25/02F02B43/02F02B2075/025F02M21/023F02M21/0263
Inventor 彼得·哈根
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司