Topic
Spark-ignition engine
About: Spark-ignition engine is a research topic. Over the lifetime, 4352 publications have been published within this topic receiving 66550 citations.
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TL;DR: In this article, the authors measured the burning velocity of aerosol flames and a gaseous mixture at the same overall equivalence ratio and similar conditions for iso-octane and found that at high stretch rates, flames remained smooth and droplet enhancement was negligible.
20 citations
20 citations
TL;DR: The combustion process inside a direct injection spark ignition engine with charge stratification is a very complex process with a large number of variables existing for the definition of torsion as mentioned in this paper.
Abstract: The combustion process inside a direct injection spark ignition engine with charge stratification is a very complex process with a large number of variables existing for the definition of t...
20 citations
TL;DR: In this paper, the applicability of homogeneous charge compression Ignition engines (HCCI) for small-scale cogeneration (less than 1 MWe) in comparison to five previously analyzed prime movers is evaluated.
Abstract: This paper presents an evaluation of the applicability of Homogeneous Charge Compression Ignition Engines (HCCI) for small-scale cogeneration (less than 1 MWe) in comparison to five previously analyzed prime movers. The five comparator prime movers include stoichiometric spark-ignited (SI) engines, lean burn SI engines, diesel engines, microturbines and fuel cells. The investigated option, HCCI engines, is a relatively new type of engine that has some fundamental differences with respect to other prime movers. Here, the prime movers are compared by calculating electric and heating efficiency, fuel consumption, nitrogen oxide (NOx) emissions and capital and fuel cost. Two cases are analyzed. In Case 1, the cogeneration facility requires combined power and heating. In Case 2, the requirement is for power and chilling. The results show that the HCCI engines closely approach the very high fuel utilization efficiency of diesel engines without the high emissions of NOx and the expensive diesel fuel. HCCI engines offer a new alternative for cogeneration that provides a unique combination of low cost, high efficiency, low emissions and flexibility in operating temperatures that can be optimally tuned for cogeneration systems. HCCI engines are the most efficient technology that meets the oncoming 2007 CARB NOx standards for cogenerationmore » engines. The HCCI engine appears to be a good option for cogeneration systems and merits more detailed analysis and experimental demonstration.« less
20 citations
01 Feb 1969
20 citations