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Large turbocharged two-stroke compression-ignition internal combustion engine with exhaust control

A technology for internal combustion engines and turbocharging, applied in the direction of internal combustion piston engines, combustion engines, engine components, etc., can solve problems such as unreliable safety valves, achieve the effect of preventing repeated opening and closing, and large flow area

Active Publication Date: 2019-06-28
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

However, this known safety valve was unreliable and its use has been discontinued

Method used

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  • Large turbocharged two-stroke compression-ignition internal combustion engine with exhaust control
  • Large turbocharged two-stroke compression-ignition internal combustion engine with exhaust control
  • Large turbocharged two-stroke compression-ignition internal combustion engine with exhaust control

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Embodiment Construction

[0043] In the following detailed description, a large two-stroke turbocharged compression-ignition (diesel) internal combustion engine with a crosshead will be described by way of exemplary embodiments. Figure 1 to Figure 3 A large low speed turbocharged two stroke compression ignition engine with crankshaft 42 and crosshead 43 is shown. image 3A schematic diagram of an engine with an intake system and an exhaust system is shown. In this exemplary embodiment, the engine has six cylinders 1 arranged in a row. Large two-stroke turbocharged compression ignition internal combustion engines typically have 5 to 16 cylinders in a row carried by the engine frame 45 . The engine may for example be used as the main engine in a marine vessel or as a stationary engine operating a generator in a power station. The total output of the engine may for example be in the range of 5000kW to 110000kW.

[0044] The engine is a two-stroke, one-way, compression ignition engine with a scavenging...

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PUM

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Abstract

A large turbocharged two-stroke compression ignition internal combustion engine with a crosshead comprising a plurality of cylinders with cylinder heads, exhaust valves and exhaust ducts. The cylinder head is provided with a discharge valve, the inlet of which is fluidly connected to the combustion chamber and the outlet of which is fluidly connected to the discharge conduit. The discharge valve is provided with a movable valve member movable between a closed position and a fully open position within a range of intermediate positions therebetween. The discharge valve allows gas to flow from the inlet to the outlet when the movable valve member is in any of the intermediate positions or the fully open position, and prevents gas flow from the inlet to the outlet when the movable valve member is in the closed position. The movable valve member has a first effective pressure surface exposed to pressure in the combustion chamber, and the movable valve member has a second effective pressure surface exposed to hydraulic pressure for urging the movable valve member toward the closed position.

Description

technical field [0001] The present disclosure relates to the control of exhaust events in a large turbocharged two-stroke compression-ignition internal combustion engine with a crosshead. Background technique [0002] Large two-stroke turbocharged compression-ignition internal combustion engines of the crosshead type are used, for example, for propulsion of large ocean-going vessels or as prime movers in power plants. Not only due to their size, these two-stroke diesel engines are also constructed unlike any other internal combustion engine. Their exhaust valves can weigh up to 400kg, the pistons can be up to 100cm in diameter, and the maximum operating pressure in the combustion chamber is typically several hundred bars. The forces involved at these high pressure levels and piston sizes are enormous. [0003] Occasionally, too high pressure may develop in one of the cylinders due to, for example, incorrect fuel injection timing or fuel injection quantity. To accommodate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B77/08F02B75/02F02B1/12
CPCF02B1/12F02B75/02F02B77/082F02B2075/025Y02T10/12F02B25/04F02B67/10
Inventor P·肯可M·罗吉尔德
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司