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Cam driven exhaust fuel injection system for large two-stroke diesel engine

A diesel engine and engine technology, applied in the direction of fuel injection pump, fuel injection device, charging system, etc., can solve the problem of the engine not running.

Inactive Publication Date: 2012-01-25
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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system has a low level of redundancy, i.e. the engine will not be able to run in the event of failure of said mechanism or failure of the infinitely variable volume adjustment or rupture of supply pipes or pipe connections due to inherent violent pressure oscillations

Method used

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  • Cam driven exhaust fuel injection system for large two-stroke diesel engine
  • Cam driven exhaust fuel injection system for large two-stroke diesel engine
  • Cam driven exhaust fuel injection system for large two-stroke diesel engine

Examples

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Embodiment Construction

[0033] figure 1 and 2 A cross-sectional view and a longitudinal sectional view (of one cylinder) of an engine 1 according to a preferred embodiment of the invention are shown respectively. The engine 1 is a crosshead single-flow low-speed two-stroke crosshead diesel engine, which can be a propulsion system in a ship or a prime mover in a power plant. These engines typically have 4 to 14 in-line cylinders. The engine 1 is built on a foundation 2 with main bearings for a crankshaft 3 .

[0034] The crankshaft 3 is of the semi-combined type. The crankshaft of the semi-compound type is made of a forged or cast steel crank, which is connected to the main journal by a shrink fit connection.

[0035] The base 2 can be made in one piece or divided into appropriately sized parts according to the manufacturing equipment. The base consists of side walls and welded beams with bearing supports. The beam is also known in the art as

[0036] "Transverse trusses". An oil pan 58 welded...

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Abstract

A large two-stroke diesel engine with an exhaust valve actuating system is provided. The actuating system comprises a cam shaft and a hydraulic push pole. The cam shaft is coupled to the hydraulic exhaust valve actuator moving the relevant exhaust valve via the pipeline. The cam shaft is arranged with the fuel cam for each cylinder; the fuel cam and the exhausting cam used for the relevant cylinder are acting on the same volume-type pump. The hydraulic-driven fuel pump is linked to each cylinder; the fuel pump is connected to at least one fuel ejectors relevant to the cylinder for providing the high-pressure fuel for the fuel ejectors. The fuel pump is hydraulically driven by the single volume-type pump related to the cylinders.

Description

technical field [0001] This invention relates to cam-actuated exhaust valve and fuel injection systems for internal combustion engines, and in particular to cam-actuated hydraulic exhaust valve actuation and fuel injection systems for large two-stroke diesel engines. Background technique [0002] Large two-stroke diesel engines of the crosshead type are used, for example, for the propulsion of large ocean-going vessels or as prime movers for power plants. These two-stroke diesel engines are constructed differently from any other internal combustion engine not only because of their overall size. The two-stroke principle and the use of heavy fuel oil with a viscosity below 700 cSt at 50°C (which does not flow at room temperature) make the two-stroke diesel engine a class of its own in the engine world. [0003] The need to increase performance and reduce emissions has led to the development of conventional orbital electrohydraulic exhaust valve actuation systems and electrohy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M59/10
CPCF01L1/08F02M37/12F02M47/00F02M47/04
Inventor 芬·考助普·延森
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司