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Fuel additive of homogeneous premixed compression ignition engine

A technology for fuel additives and engines, applied in the field of fuel additives, can solve problems such as easy knocking, and achieve the effect of improving physical and chemical properties

Inactive Publication Date: 2007-01-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem that HCCI engines are prone to knocking at high loads, the present invention suppresses the combustion rate at high loads and controls knocking by adding an appropriate amount of alcohols and ethers antiknocks to the fuel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Add additive 1 to No. 90 commodity gasoline by mass fraction 0.2%, carry out HCCI combustion experiment when engine water temperature and engine oil temperature are 90 degrees, the load of HCCI engine is from (excessive air coefficient) 2.8~of former No. 90 gasoline 3.3 expands to 2.7-3.5, HC is reduced from 510ppm-4000ppm of the original machine to 440ppm-3500ppm, and HC emission is reduced by an average of 12%; CO is reduced from 0.07%-0.78% of the original machine to 0.055%-0.62%, and CO is reduced by an average of 21% %.

example 2

[0030] Add additive 2 in No. 90 commodity gasoline by mass fraction 0.5%, carry out HCCI combustion experiment when engine water temperature and engine oil temperature are 90 degrees, the load of HCCI engine is from (excessive air coefficient) 2.8~of former No. 90 gasoline 3.3 is extended to 2.6~3.6, HC is reduced from 510ppm~4000ppm of the original machine to 418ppm~3280ppm, and HC emission is reduced by an average of 18%; CO is reduced from 0.07%~0.78% of the original machine to 0.052%~0.58%, and CO is reduced by an average of 26% %.

example 3

[0032] Additive 3 is added in No. 90 commodity gasoline by mass fraction 2%, carry out HCCI combustion experiment when engine water temperature and engine oil temperature are 90 degrees, the load of HCCI engine is from (excessive air coefficient) 2.8~of former No. 90 gasoline 3.3 is expanded to 2.3-3.8, HC is reduced from 510ppm-4000ppm of the original machine to 326ppm-2560ppm, HC emissions are reduced by an average of 36%, CO is reduced from 0.07%-0.78% of the original machine to 0.037%-0.41%, and CO is reduced by an average of 47% %.

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PUM

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Abstract

The fuel additive for homogeneous premixed compression ignition engine belongs to the field of fuel additive technology. The homogeneous premixed compression ignition engine has the demerits of easy causing fire at low load, easy knocking at high load and narrow running operation condition range, and adopting additive is one simple solution to the demerits. The fuel additive of the present invention includes igniting promoter di-tert-butyl peroxide 5-30 wt%, tert-butyl hydroperoxide 5-35 wt%, superox 736 2-20 wt%, dicumyl peroxide 2-20 wt%, cumene hydroperoxide 2-20 wt%, antidetonator ethanol 5-30 wt%, methanol 1-10 wt%, methyl tertiary pentyl ether 5-20 wt%, and ferrocene 1-10 wt%. The fuel additive of the present invention can expand the running range of HCCI engine effectively, and lower the exhaust of HC and CO.

Description

technical field [0001] The invention relates to a fuel additive capable of improving the combustion state of a homogeneous premixed and compression ignition (HCCI) engine, which belongs to the technical field of fuel additives. Background technique [0002] With the continuous development of the automobile industry on a global scale, people's pursuit of higher power and economy of automobiles, and the increasingly stringent emission standards of automobiles in various countries in the world, these all force people to think about the current state of automobiles, and pay special attention to , How to redesign and transform the engine, the heart of the car, to achieve more efficient and more environmentally friendly goals. Traditional engines (gasoline engine, diesel engine) have their own strengths and weaknesses. Can a new engine that can combine the advantages of both be designed? The answer is yes, people are developing a homogeneous premixed and compression ignition engi...

Claims

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Application Information

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IPC IPC(8): C10L1/30C10L1/18C10L1/185
Inventor 纪常伟何洪
Owner BEIJING UNIV OF TECH
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