The effects of hydrogen-enriched biogas on combustion and emissions a dual-fuel spark-ignition engine with different hydrogen concentration ratios were studied numerically. A 1-cylinder spark ignition was used to perform numerical simulation. To reveal the influence compression gaseous engine, crankshaft modified generate 8.5, 9.0, 9.4, 10.0, 10.4. contained 60 40% methane (CH4) carbon dioxide ...

Engine knock is an undesired phenomenon in spark ignited internal combustion engines; such as a gasoline engine running the Otto cycle. Knocking originates from abnormal combustions at timings other than those decided by controlled ignition. Individual abnormal combustions of this type is also referred to as auto-ignition. Knocking is not only a limitation on engine efficiency and thus of envir...

Compression ignition engine technologies have been advanced in the last decade to provide superior fuel economy and high performance. These technologies offer increased opportunities for optimizing engine calibration. Current engine calibration relies on deriving static tabular relationships between a set of steady-state operating points and the corresponding optimal values of the controllable ...

IJSER © 2013 http://www.ijser.org Abstract: The Homogeneous Charge Compression Ignition Engine, HCCI, has the potential to combine the best of the Spark. Ignition and Compression Ignition Engines. With high octane number fuel the engine operates with high compression ratio and lean mixtures giving CI engine equivalent fuel consumption or better. Due to premixed charge without rich or stoichiome...

–Fast depletion of fossil fuels demands an urgent need to carryout research to find viable alternative fuels such as Hydrogen, LPG and CNG. The gaseous hydrocarbons seem to be best immediate option presently available[1]. The remarkable feature of gaseous fuels are the absence of mineral impurities, the consistency in quality and the convenience and efficient in use. LPG is used widely as a co-...

Modern engines have an increasing number of control parameters that are having a dramatic impact on calibration time. Up-front prototyping of calibration processes can be used to reduce the burden of increasing powertrain complexity, however, such techniques are still in their infancy in the automotive field. In this paper we illustrate how flexible model-based calibration tools can be used to ...

The initial 1-2 minutes of operation of an automotive spark-ignition engine, commonly called as the ”coldstart” period, produces more than 75-80 % of the hydrocarbon (HC) emissions in a typical drive cycle. Model-based controller development requires accurate, yet simple, models that can run in realtime. Simple, intuitive models are developed to predict both tailpipe hydrocarbon (HC) emissions ...

To examine the effects of using synthetic Fischer-Tropsch (FT) diesel fuel in a modern compression ignition engine, experiments were conducted on a MY 2002 Cummins 5.9 L diesel engine outfitted with high pressure, common rail fuel injection, a variable geometry turbo charger, cooled EGR and a fully configurable engine management computer. Additionally, the effect of varied injection timing and ...