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Method for operating a large diesel engine, use of this method and large diesel engine

A diesel engine, dual-fuel engine technology, applied in the direction of engine components, combustion engines, engine control, etc., can solve the problem that the exhaust gas value can no longer be maintained, and achieve the effect of safe operation

Pending Publication Date: 2016-11-30
WINTERTHUR GAS & DIESEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Large diesel engines operating in liquid mode, for example on heavy fuel oil, may no longer be permitted to operate in liquid mode near shore due to existing exhaust requirements, because in liquid mode Lower exhaust values ​​may no longer be sustainable

Method used

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  • Method for operating a large diesel engine, use of this method and large diesel engine
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  • Method for operating a large diesel engine, use of this method and large diesel engine

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Embodiment Construction

[0054] In the following description of the invention with reference to embodiments, reference will be made, with exemplary features, to a particularly important application in practice of a large diesel engine, which is constructed as a dual-fuel engine, meaning a dual-fuel engine capable of An engine that operates on two different types of fuel. In particular, this embodiment of a large diesel engine is capable of operating in a liquid mode in which only liquid fuel is injected into the combustion space of the cylinder. Typically, liquid fuel (such as heavy fuel oil or diesel) is directly injected into the combustion space at a suitable point in time and ignited in the combustion space according to the principle of diesel self-ignition. However, the large diesel engine can also be operated in a gas-fired operating mode, in which gas used as fuel, such as natural gas, is introduced into the combustion space in the form of an air-gas mixture and ignited there. In particular, l...

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PUM

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Abstract

The invention relates to method for operating a large diesel engine, a purpose and a large diesel engine. The large diesel engine can be operated under at least one fuel gas; under the fuel gas state, the gas is used as a fuel to be guided into an air cylinder (21) and is guided away through an exhaust valve(24), wherein during operation under the fuel mode (10), an acute change state (13) of a load is detected, the large diesel engine is operated under a transient mode; the transient mode comprises steps of determining a close angle for closing the exhaust valve under the fuel gas state, determining a correction value (14) for the closed angle, determining a transient closed angle (14) through correlation between the closed angle and the correction value; and the exhaust valve (15) is closed at the transient closed angle.

Description

technical field [0001] The invention relates to a method of operating a large diesel engine, a large diesel engine and the use of the method. Background technique [0002] Large diesel engines may be configured as two-stroke or four-stroke machines, for example as longitudinally scavenged two-stroke large diesel engines. Such large diesel engines are often used as drive aggregates for ships, or are also often used in stationary modes of operation, for example to drive large generators to generate electrical energy. In this regard, these engines are usually operated in continuous operation mode for considerable periods of time, which represents high demands on operational safety and availability. For this reason, especially long intervals between maintenance, low wear and economical handling of operating fuel are core criteria for operators. [0003] For some years, a further and more important point has been the quality of the exhaust gas, in particular the concentration o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D13/02F02D41/04F02B69/04
CPCF02B69/04F02D13/0242F02D41/0025F02D41/04F02B3/06F02B43/00F02D13/0249F02D41/0027B63H21/14F02B25/04F02D13/0284F02D19/081F02D19/105F02B2075/025F02B2075/027Y02T70/5218F02B75/02F02B63/04F02D19/06
Inventor M·奥特
Owner WINTERTHUR GAS & DIESEL
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