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首页> 外文会议>European Automotive Congress >INFLUENCE OF SWIRL ON PERFORMANCE AND EMISSIONS OF NATURAL GAS HEAVY DUTY ENGINES
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INFLUENCE OF SWIRL ON PERFORMANCE AND EMISSIONS OF NATURAL GAS HEAVY DUTY ENGINES

机译：旋流对天然气重型发动机性能和排放的影响

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Generally, nowadays, natural gas heavy duty engines are derived from the equivalent in production diesel ones. As a consequence, they have elevated swirl index, essential for diesel combustion, but not for homogeneous charge spark ignition engines. To improve the benefits obtaining from natural gas spark ignited engines it is primary the development of dedicated engines, according to fuel and its combustion characteristics. Therefore an analysis has been carried out on the swirl ratio (SR) effect on engine behaviour and combustion development. Experimental data have been obtained on a heavy duty engine with two different heads at SR 1.8 and 0.8, and instrumented to acquire the pressure cycle in the combustion chamber. Tests at wide open throttle (WOT) and 50% of maximum load have been carried out. Small benefits on BSFC and volumetric efficiency have been found with the 0.8 SR head.
机译：通常，现在，天然气重型发动机源自生产柴油的等同物。因此，它们具有升高的漩涡指数，对柴油燃烧至关重要，但不是用于均匀的充电火花点火发动机。为了改善从天然气的益处，通过燃料及其燃烧特性，它是初级发动机的发动机初级开发。因此，对发动机行为和燃烧开发的旋流比（SR）效应进行了分析。在SR 1.8和0.8的两个不同头部的重型发动机上获得了实验数据，并且仪器仪表以获取燃烧室中的压力循环。已经进行了宽开放式节流阀（WOT）和50％的最大载荷的测试。在0.8 sR头上发现了对BSFC和体积效率的小益处。

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