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Crankshaft, bearing assembly and large multi-cylinder two-stroke diesel engine

A two-stroke, diesel engine technology, applied in the direction of crankshaft bearings, bearing components, shafts and bearings, etc., can solve the problems of complex logistics, expensive engines, etc., and achieve the effect of a uniform bearing shell

Active Publication Date: 2014-05-21
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

If mixed edge bearings are specified elsewhere in the same engine, then the engine must be fitted with normal and mixed edge casings as spare parts, which makes logistics easier as engines in ocean going vessels must carry this necessary spare on board. Complicated and the engine is more expensive

Method used

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  • Crankshaft, bearing assembly and large multi-cylinder two-stroke diesel engine
  • Crankshaft, bearing assembly and large multi-cylinder two-stroke diesel engine
  • Crankshaft, bearing assembly and large multi-cylinder two-stroke diesel engine

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Embodiment Construction

[0040] In the following detailed description, a crankshaft, a bearing assembly and a crosshead large two-stroke diesel engine or compressor will be described through preferred embodiments.

[0041] figure 1 with figure 2 A large low-speed two-stroke crosshead diesel engine is shown in-line with an engine 10 having a piston diameter of 98 cm, which may be a propulsion engine in a ship or a prime mover in a power plant. These engines typically have 6 up to 16 collinear cylinders. exist figure 1 A side view of an 8-cylinder engine 10 and additional lines showing the outlines of 9-cylinder, 10-cylinder, 11-cylinder and 12-cylinder variants of this engine is depicted in FIG. A meter scale is shown below the engine 10 to provide an indication of the absolute size of these machines ranging in length from about 18 meters for the 8-block model to 34 meters for the 16-block model.

[0042] The engine is constructed from a bedplate 11 with main bearings for the crankshaft 1 . The pla...

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Abstract

A crankshaft (1) for a reciprocating piston engine (10) or compressor. The crankshaft (1) has a plurality of throws (2) that are interconnected by main journals. The main journals (5) have a main journal bearing surface with a given width (W) between the two axial ends of (42,43) of said main journal bearing surface (40). At least one receding area (45) is provided in the main journal bearing surface (40) of at least one of the main journals (5). The at least one receding area (45) adjoins one of the two axial ends (42,43) and the receding area (45) has a depth (y) that generally decreases in the axial direction away from the one of the two axial ends (42,43) that the receding area (45) adjoins. A bearing assembly with a plurality of main bearings (62,80,86,87) and a crankshaft (1) as above. A large multi-cylinder two-stroke diesel engine of the crosshead type or a large compressor of the crosshead type with a crankshaft as above or with or a bearing assembly as above.

Description

technical field [0001] The invention relates to a crankshaft, a bearing assembly and a crosshead type large multi-cylinder two-stroke engine. In particular, the invention relates to a crankshaft having crank throws interconnected by main journals, a bearing assembly having a bearing housing for the main journal of the crankshaft, and a crosshead large multi-cylinder two-stroke comprising said crankshaft and bearing assembly engine. Background technique [0002] Running at low speeds large two-stroke crosshead diesel engines are large and efficient power generating machines. The largest of these engines produces about 120.000kW at 94rpm, has an overall length of 36 meters and a weight of close to 3800 tons. [0003] This type of engine is divided into block sections that are reflected in the deck by adjacent cross members, in the A-shaped crankcase frame by transverse stiffeners, and in the block frame by block spacing. [0004] These engines include a crankshaft assembled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C3/06F16C9/02
CPCF16C3/08F16C9/02F16C23/041F02F7/00F16C33/12
Inventor 马丁·奥尔松
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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