Ignition Control of Mixtures in Internal Combustion Engines

甲烷在自动化过程中不会产生凉爽的火焰;高氢碳燃料（包括丙烷、丁烷、汽油和柴油油）中的高氢碳燃料有明显的不同。n-Butane的内容有更多的促进对甲基燃料气体的影响，以比较Ethane和propane。八烯/六烯评级的不加权汇总规则已经批准，并将其作为正常液体氢碳燃料的补充，应该找到一些措施来消除点燃的闪光。在前火焰期上升到氢碳燃料的热火焰稳定是正式的醛，它与冷却火焰的一级密切相关。我们提出了一种点火控制概念，即利用气体的形式消除，作为一种附加物来维护火花点火的自然气体发动机的稳定操作，并实现预先混合的压缩点火引擎（i. e. homogeneous charge压缩点火引擎， HCCI）。精益燃料/空气混合物Wit ... More h各种燃料/燃料比率之间的甲烷和n-butane可以补充具有或不具有补充性气体形式化诱导作为一种点火控制附加物的预混合压缩点火引擎。Formaldehyde的数量是每百万个零件的总混合物。Formaldehyde添加到methane/butane/空气混合物中可以控制发动机的期望和稳定启动时间，由于Formaldehyde被添加的数量，几乎取决于methane和butane之间的燃料/燃料比率。Formaldehyde添加到methane/ butane/空气混合物中的较小数量得到了引擎的期望和稳定启动时间，根据Formaldehyde添加的数量，Formaldehyde添加的数量，Formaldehyde添加到Formaldehyde。几乎独立于燃料/燃料比率，介于甲烷和丁烷之间。“Formaldehyde的数量添加到燃料/空气混合物成为一个单一的控制因素到点火调谐。”Formaldehyde Addition的影响是抑制混合物与先进的热火焰点火时间相对比的影响对混合物wilh恢复点火时间产生的促销效应。到了日对日激活的问题--发动机燃料气体的特征流动可以通过使用一个小的形式当量来满足精密压缩激活和火花激活的自然气体引擎。premixed compression-ignition engine expands to both methane-abundant and butane-abundant directions的操作范围。Formaldehyde是一种有效的点火控制介质，用于发动机cylinders中的氢/空气混合物。The effect of formaldehyde leading to the ignition would be an inhibitory event for the cool-flame generating constituent and a promoting event of the non-cool-flame generating constituent in the fuel gases. Less（低）

Methane would not generate cool flame during its preflame period in the autoignition processes ; quite different from the higher hydrocarbon fuels including propane, butane, gasoline and diesel oils.・ n-Butane content has more ignition promoting effect compared to ethane and propane for the methane-dominant fuel gases.・ No weighted summing rule of octane/cetane rating is approved, as suited for normal liquid hydrocarbon fuels.Measures should be found out to eliminate the fluctuation of ignition. The most important intermediate during the preflame period up to the hot-flame establishment of hydrocarbon fuels is the formaldehyde, which is closely related to the cool-flame a ppearance. We proposed herewith an ignition-control concept utilizing the gaseous formaldehyde as an additive to maintain stabilized operation of spark-ignited natural gas engines and to realize premixed compression-ignition engines (i.e.homogeneous charge compression ignition engine, HCCI). Lean fuel/air mixtures wit … More h various fuel/fuel ratios between methane and n-butane were supplied to apremixed compression-ignition engine with or without supplementary gaseous formaldehyde induction as an ignition controlling additive. The amount of formaldehyde was hundreds parts per million of total mixtures. The formaldehyde addition to the methane/butane/air mixtures has given the engine desired and stable ignition timings controllable by the amount of formaldehyde to be added, almost independent on the fuel/fuel ratios between methane and butane.A small amount of formaldehyde added into the methane/ butane/air mixtures has given the engine desired and stable ignition timings according to the amount of formaldehyde added, almost independent on the fuel/fuel ratios between methane and butane.・ The amount of formaldehyde added to the fuel/air mixture becomes a sole controlling factor to the ignition tuning. The effect of formaldehyde addition is inhibitory for the mixtures with advanced hot-flame ignition timings as contrasted with a promoting effect to the mixtures wilh retarded ignition timings.・Troubles due to the day-by-day ignition-characteristic fluctuation of the engine fuel gases can be eliminated by using a small amount of formaldehyde for the premixed compression-ignition and spark-ignited natural gas engines.・Operating range of premixed compression-ignition engine expands to both methane-abundant and butane-abundant directions.Formaldehyde is efficacious as an ignition controlling medium for the hydroribon/air mixtures in engine cylinders. The effect of formaldehyde leading to the ignition would be an inhibitory event for the cool-flame generating constituent and a promoting event of the preflame reaction of the non-cool-flame generating constituent in the fuel gases. Less