Engine system and method for substantially NOx-free combustion of a fuel in a compression ignition engine

An engine system and engine technology, applied in combustion engines, internal combustion piston engines, engine components, etc.

Inactive Publication Date: 2010-09-29
COOL FLAME TECH AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, to ensure autoignition, the engines described in Heike Puschmann et al. must be run on a rich fuel / air mixture, which leads to increased NO in the exhaust x form

Method used

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  • Engine system and method for substantially NOx-free combustion of a fuel in a compression ignition engine
  • Engine system and method for substantially NOx-free combustion of a fuel in a compression ignition engine
  • Engine system and method for substantially NOx-free combustion of a fuel in a compression ignition engine

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Embodiment Construction

[0033] exist figure 1 , showing the Work done on large dual fuel marine engines. This figure shows the operating window where it can be seen that by providing a lean mixture of fuel and air, the compression ratio can be increased without self-knock or misfire.

[0034] Embodiments of the present invention are in figure 2 shown schematically. A cold flame evaporator 40 is provided in which fuel is partially oxidized in preheated air to form cold flame gas. The resulting cold flame gas is a gaseous, homogeneously mixed fuel.

[0035] An air source 50 is also provided, which is connected by fluid line 42 to the cold flame vaporizer. Valve means 41 are provided to control the flow of air from an air source 50 to the cold flame vaporizer 40 .

[0036] A fuel source 30 for supplying diesel or heavy fuel oil is also provided. Fuel source 30 is connected to the cold flame vaporizer by fluid line 53 . Valve arrangement 56 controls the flow of fuel to cold flame vaporizer 40 ....

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Abstract

Engine system comprising a compression ignition engine (20) including at least one combustion chamber and a cold flame vaporizer (40) in which a fuel is partially oxidized in preheated air to form a cold flame gas. The cold flame vaporizer (40) is in fluid communication with the combustion chamber of the compression ignition engine (20). There is further provided means (50) for supplying air such that the cold flame gas can be mixed with the additional air before being injected into the combustion chamber, and means (22) for injecting a pilot fuel into the combustion chamber, thereby producing a pilot flame in the combustion chamber which ignites the mixture of cold flame gas and air. There is also provided a method for a substantially NOx-free combustion of diesel fuel in a compression ignition engine (20).

Description

technical field [0001] The present invention relates to a kind of exhaust gas containing less NO x emissions from engine systems and a method for reducing NO in exhaust x content method. The present invention also relates to the use of substantially NO-free x Combustion engine systems and methods of use. Background technique [0002] Cold flame is a phenomenon that has not received much attention so far. In the cold flame, the fuel is partially oxidized in preheated air and the temperature is kept constant at about 450°C, independent of the air / fuel ratio and residence time. During cool flame, only 2-20% of the heating value of the fuel is released and this heat is used to vaporize the fuel, providing a homogeneous gaseous fuel. During research and development work, it has been observed that the gas is able to remove carbon deposits from the reactor walls. The reason for this has not been determined, however, it is believed to be due to free radicals present in the col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B1/12
CPCF01N3/0842F01N3/0821Y02T10/24F01N3/306F01N3/023F01N2240/30F01N3/025F01N3/36Y02T10/12F01N3/0253F01N2250/02F01N2250/04F01N2270/04F01N2610/00
Inventor K·卢卡D·奥夫雷博H·P·沃姆施洛斯
Owner COOL FLAME TECH AS
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