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首页> 美国政府科技报告 >Extension of the Lean Operating Limit of a Rotary Combustion Engine by Hydrogen Enriched Fuel.
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Extension of the Lean Operating Limit of a Rotary Combustion Engine by Hydrogen Enriched Fuel.

机译：用富氢燃料扩展旋转内燃机的精益运行极限。

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The extension of the Lean Operating Limit (LOL) of internal combustion engines by hydrogen fuel addition has been proposed as a viable means of reducing species emissions and increasing thermal efficiency. A review of the literature pertinent to both the particular technique and the thermodynamic principles of fuel-lean combustion is presented. These principles are then used to interpret the results of an investigation in which the LOL of a rotary combustion engine is extended by hydrogen addition. The quantities of hydrogen addition varied from less than one percent of the mass of the gasoline consumption at the lowest air/gasoline ratio to 24percent at the highest. In terms of overall equivalence ratio,this corresponded to a range from 0.49to 0.94. The exhaust composition was examined for nitric oxide (NO),carbon monoxide (CO),carbon dioxide (CO2),oxygen (O2),and unburned hydrocarbons (HC). At the ultra-lean equivalence ratios large reductions in CO and NO were noted,but at the expense of an increase in unburned HC. The brake thermal efficiency was observed to be favorably,but not significantly,affected by the fuel-lean combustion conditions.

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