A self-igniting internal combustion engine having a gaseous fuel supply system with pilot oil injection
A technology of gas fuel and internal combustion engine, which is applied in the direction of charging system, internal combustion piston engine, combustion engine, etc., can solve the problems that are difficult to realize, and achieve the effect of convenient timing control and reducing pilot fuel consumption
Active Publication Date: 2015-03-25
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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Problems solved by technology
Such a small amount of dosing, while still being able to deliver the large number of fuel valves required for operation under full load, poses important technical problems and is very difficult to achieve in practice, and therefore in existing engines The medium pilot oil dose has a larger than expected amount per oil injection event
Method used
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Embodiment Construction
[0030] In the following detailed description, a self-ignition internal combustion engine will be described in example embodiments with reference to a large two-stroke low speed turbocharged internal combustion (diesel) engine. figure 1 , figure 2 and image 3 A large low speed turbocharged two stroke diesel engine with crankshaft 42 and crosshead 43 is shown. image 3 A schematic diagram of a large low-speed turbocharged two-stroke diesel engine with an intake and exhaust system is shown. In this example embodiment, the engine has six cylinders 1 in a line. Large low-speed turbocharged two-stroke diesel engines typically have between four and fourteen in-line cylinders carried by the engine frame 13 . The engine may, for example, be used as the main engine in an ocean-going vessel or as a stationary engine for operating a generator in a power station. The total output of the engine may, for example, range from 5,000 kW to 110,000 kW.
[0031] In this example embodiment, ...
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The invention provides a self-igniting internal combustion engine having a gaseous fuel supply system with pilot oil injection. The engine has a plurality of cylinders (1) and is provided with a gaseous fuel supply system. The cylinders (1) are provided with at least one gaseous fuel valve (50) for injecting a gaseous fuel from an outlet of the fuel valve (50) in to the cylinder (1) concerned. The at least one gaseous fuel valve (50) has an inlet connected to a gaseous fuel supply conduit (62,63,64) that supplies pressurized gaseous fuel to the gaseous fuel valve (50). The engine further comprises at least one dedicated pilot oil valve (55) for each cylinder (l). The dedicated pilot oil valve (55) has an in let connected to a source of pressurized pilot oil (57) and an outlet for injecting pilot oil fuel into the gaseous fuel supply conduit (62,63,64).
Description
technical field [0001] The present invention relates to a self-ignition internal combustion engine with a gas fuel supply system, in particular to a large low-speed single-flow turbocharged two-stroke internal combustion engine with a gas fuel supply system and pilot oil (ignition initiator) injection. Background technique [0002] Large crosshead low-speed two-stroke diesel engines are commonly used in the propulsion systems of large ships or as prime movers in power plants. Very often, these engines are run on heavy fuel oil or fuel oil. [0003] Currently, there is a need for large two-stroke diesel engines that can operate on alternative types of fuel, such as gas, coal slurry, petroleum coke, etc., especially gas. [0004] Gaseous fuels such as natural gas when used as fuel for large low-speed single-flow turbocharged two-stroke internal combustion engines are significantly lower levels of sulfur groups produced in exhaust gases when compared to, for example, heavy fue...
Claims
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IPC IPC(8): F02D19/10
CPCY02T10/12Y02T10/30F02D19/10F02M21/0254F02M21/0278F02M21/0281F02M55/02
Inventor 尼尔斯·维特费尔特·拉斯穆森
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司