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Large two-stroke diesel engine with variable turbochargers

A turbocharger and diesel engine technology, applied in machine/engine, combustion engine, engine control, etc., can solve problems such as unsuitable and unsuitable for multiple parallel variable turbochargers

Active Publication Date: 2012-02-22
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

Suitable control systems for a single variable turbocharger are known, but these known control systems are not suitable for multiple variable turbochargers in parallel, where the engine is a large two-stroke diesel engine more inappropriate

Method used

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  • Large two-stroke diesel engine with variable turbochargers
  • Large two-stroke diesel engine with variable turbochargers
  • Large two-stroke diesel engine with variable turbochargers

Examples

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Embodiment Construction

[0030] In the following detailed description, the invention will be described by way of preferred embodiments. Figure 1-3 A large turbocharged two-stroke diesel engine 1 of the crosshead type is shown with its intake system and exhaust system. Engine 1 has a scavenging tank 2 and an exhaust tank 3 . Each of these boxes runs the entire length of the engine. The engine has a number (usually between 5 and 14) of cylinders arranged in-line. The exhaust valve connected to the combustion chamber is indicated by 4 . The engine 1 can be used, for example, as the main engine in an ocean-going vessel or as a stationary engine in a power station for running a generator. The overall output of the engine may range, for example, from 5,000 to 110,000 kW. The engine 1 normally runs on heavy fuel oil and is therefore provided with a heavy fuel oil system comprising a heated heavy fuel tank and heated heavy fuel lines (not shown). These heated components of the fuel injection system are ...

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Abstract

A large two-stroke diesel engine with a plurality of variable turbochargers, which has: a plurality of cylinders arranged in-line; a plurality of variable nozzle area turbochargers, the variable turbochargers The controller is connected in parallel between the exhaust gas tank and the scavenging tank of the engine; coupled to the controller of the variable turbocharger, the controller includes an external pressure circuit and an internal speed circuit, and the external pressure circuit including a pressure controller, the inner speed loop including a speed controller configured to determine a desired total nozzle area of ​​the turbochargers combined, the speed controller configured to individually control each of the the speed of the turbocharger.

Description

technical field [0001] The present invention relates to a large multi-cylinder two-stroke diesel engine provided with multiple variable turbochargers, and in particular to the control of the multiple variable turbochargers. Background technique [0002] Due to their enormous size, large two-stroke diesel engines have been provided with multiple turbochargers. Large two-stroke diesel engines are gigantic machines usually with 5-14 cylinders in-line. The scavenging box extends along the entire length of the engine and can be longer than 30m. [0003] In theory, these engines could have a single giant turbocharger. However, constructing a turbocharger of this size is technically very difficult and therefore expensive. Thus, these large two-stroke diesel engines are usually provided with two, three, four or more turbochargers. These turbochargers are evenly distributed along the length of the engine. [0004] These known engines are provided with conventional turbochargers,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/22
CPCF02B37/24F02D41/0007F02B37/007F02D2041/1419F02B37/04Y02T10/144Y02T10/16F02B37/001Y02T10/12F02B37/12F02B37/22F02B39/16F02D23/00
Inventor 莫滕·劳尔森
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司