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Nozzle for fuel valve

A fuel valve and nozzle technology, which is applied in the field of cylinder nozzles, can solve problems such as nozzle hole cracks and material thermal fatigue.

Active Publication Date: 2018-06-29
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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Known nozzles develop cracks between nozzle holes when they are exposed due to thermal fatigue of the material due to high operating temperature gases in the combustion chamber and high cooling effect of the injected fuel / gas

Method used

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  • Nozzle for fuel valve
  • Nozzle for fuel valve
  • Nozzle for fuel valve

Examples

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Embodiment Construction

[0041] In the following detailed description, a nozzle for use with a fuel valve and a large two-stroke engine in which the nozzle and fuel valve are used will be described by way of example embodiments. Figures 1 to 3 A large low speed turbocharged two stroke diesel engine with crankshaft 22 and crosshead 23 is shown. image 3 A diagram showing a large low-speed turbocharged two-stroke diesel engine and its intake and exhaust systems. In these example embodiments, the engine has six cylinders 1 in line. Large turbocharged two-stroke diesel engines typically have five to sixteen cylinders arranged in a line and supported by the engine frame 24 . The engine may eg 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 be, for example, 5,000 to 110,000 kW.

[0042]The engine is a diesel (compression ignition) engine of the two-stroke single-flow type with scavenging ports ...

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Abstract

A nozzle (40) for a fuel valve (26) for injection of gaseous fuel into a large two-stroke turbocharged compression ignited internal combustion engine with crossheads. The nozzle (40) comprises a nozzle body extending in a main direction and axis X from a base (42) at a proximal end (41) of the nozzle body to a distal end (44) of the nozzle body, the base (42) being configured for attachment to thefuel valve (26), an inlet port (48) opening to the base (42) for receiving fuel from the fuel valve (26), a main bore (50) extending in the main direction X from the inlet port (48) into the nozzle body to a medial position between the base (41) and the distal end (44), a plurality of nozzle holes (45) arranged in the nozzle body near the distal end (44), with each nozzle hole (45) being fluidlyconnected to the main bore (50) by an individual supply passage (49) extending from the main bore (50) to one of the nozzle holes (45). The nozzle can reduce internal stress of a material surroundingthe nozzle holes and further reduce risk of cracks.

Description

technical field [0001] The present invention relates to a nozzle for injecting fuel into a fuel valve of a large turbocharged two-stroke self-ignition internal combustion engine having a crosshead, in particular to a nozzle for injecting gaseous or low flash point fuel into a cylinder having a crosshead Nozzles for cylinders of large turbocharged two-stroke self-ignition internal combustion engines. Background technique [0002] Large turbocharged two-stroke self-igniting crosshead internal combustion engines are generally used as prime movers in large ocean-going vessels, such as container ships, or in power plants. [0003] The cylinders of these engines are provided with a single exhaust valve located in the center of the cylinder head, ie the top of the cylinder, with a ring of piston controlled scavenging ports in the lower area of ​​the cylinder liner. The scavenging ports are sloped to create swirls in the gases in the combustion chamber. [0004] Two or three fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28
CPCF23R3/28F02M61/1893F02M21/0281F02M61/182F02M21/0263F02B2075/025F02B25/04Y02T10/30F02B75/02F02M61/1806F02M21/0248
Inventor 皮特·哈根
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司