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Large scale multi-cylinder two-stroke diesel engine

A diesel engine, a large-scale technology, applied in the direction of mechanical equipment, machines/engines, crankshafts, etc., can solve the problems of expensive engines, heavy space, and reduced efficiency

Active Publication Date: 2006-12-06
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] This means that not only the crankshaft but also adjacent parts of the engine need more space and become heavier, which makes the engine more expensive and reduces its efficiency

Method used

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  • Large scale multi-cylinder two-stroke diesel engine
  • Large scale multi-cylinder two-stroke diesel engine
  • Large scale multi-cylinder two-stroke diesel engine

Examples

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Embodiment Construction

[0039] In the following detailed description, a large two-stroke diesel engine of a crosshead type will be described through a preferred embodiment.

[0040] Figures 1 and 2 show a large low-speed two-stroke crosshead type tandem diesel engine 10 with a piston diameter of 98 cm, which may be a propulsion engine on a ship or a prime mover for a power plant. These engines typically have 6 to 16 cylinders arranged in a row. In Figure 1 a side view of an 8 cylinder engine 10 is depicted, with other lines showing the outlines of the 9, 10, 11 and 12 cylinder variants of the engine. A scale in meters is shown below the engine 10 to indicate the absolute dimensions of these machines, which measure between 18 meters for the 8-cylinder version and 28 meters for the 14-cylinder version.

[0041] The engine is built up from a bedplate 11 with main bearings for the crankshaft 1 . The platen 11 is divided into sections of suitable dimensions according to the production equipment availabl...

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Abstract

The invention relates to a large-scale, multi-cylinder, two-cycle crosshead diesel engine (10), comprising one bent shaft (1), said bent shaft is assembled with a plurality of cranks (2) connected with each other through main journal (5), and main journal is supported by one main bearing. Every crank comprises two arms (3) connected by crankpin (4). Said arm is connected to main journal through one contraction connection, said contraction connection comprises main journal end in pore of arm. The maximum axial thickness of crank arm (T1, T2,..., Tn) and length contraction connection are determined according to each crank. The length of main journal bearing (M1, M2,..., Mn+x) are determined respectively. The cylinder pitch and main journal pitch are changeable and suited to each crank and main journal. So the weight and length of crank and engine (10) are reduced.

Description

technical field [0001] The invention relates to a crosshead type large multi-cylinder two-stroke diesel engine, which includes a crankshaft assembled from multiple parts. Background technique [0002] Large, slow-running two-stroke crosshead diesel engines are huge and very efficient power-generating machines. The largest of these engines produces around 100,000 kW at 94 rpm, has an overall length of 33 meters and weighs close to 3500 tons. [0003] Conventional engines of this type are divided into cylinder sections of equal axial length. This is reflected in: the distance between adjacent beams in the deck; the distance between adjacent transverse stiffeners in the A-shaped crankcase frame; and the pitch of the cylinders in the cylinder frame. [0004] These engines consist of a crankshaft assembled from crankarms interconnected by main journals, each of which is supported by a main bearing. Each crank comprises two arms interconnected by a crank pin, the arms being con...

Claims

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Application Information

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IPC IPC(8): F16C3/06F02B75/32
Inventor 约翰·迈克尔·汉森马斯·罗吉尔德亨里克·安德森延斯·拉特曼
Owner 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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