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近年来,包括页岩气在内的天然气在北美获得很大关注,而工业用火花点火发动机可以适应不同的燃料,如汽油、液化石油气(LPG)或天然气。日益收紧的废气排放法规还要求工业用火花点火发动机采用带三效催化转化器的反馈式燃料喷射系统。为了响应客户需求,开发了可以燃用任何汽油、LPG或天然气的双燃料发动机。介绍开发该机型所使用的技术和方法。对新机型的汽油机变型,采用计算流体动力学,对喷射器的位置和带稳压箱的进气歧管设计进行优化,并寻求进气歧管、燃料输送管和插件式点火线圈的优化布置。此外,可燃用LPG或天然气的变型机都配备可以布置在狭小空间中的供气装置。通过这些方法,所有变型机都具有与原柴油机进行互换的特性。排放性能满足瞬态工况法规,可选的小型催化消声器扩展了这种发动机适应各种设备的能力。
In recent years, natural gas, including shale gas, has garnered much interest in North America, while industrial spark-ignition engines can accommodate different fuels such as gasoline, liquefied petroleum gas (LPG) or natural gas. Increasingly tightened emissions regulations also require industrial spark-ignition engines to employ a feedback fuel injection system with a three-way catalytic converter. In response to customer needs, a dual-fuel engine that can burn with any gasoline, LPG or natural gas has been developed. Describes the techniques and methods used to develop this model. Optimized for newer gasoline engine variants using Computational Fluid Dynamics, ejector position and intake manifold design with surge tank, and sought to optimize the intake manifold, fuel delivery pipe and plug-in ignition coil Arrangement. In addition, flammable LPG or natural gas machines are equipped with air supply devices that can be arranged in confined spaces. Through these methods, all variants have the characteristics of being interchangeable with the original diesel engine. Emissions Performance To meet transient operating conditions, the optional small catalytic muffler expands the engine’s ability to accommodate a wide range of equipment.