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SAE Technical Paper Series, 1994
<div class="htmlview paragraph">A two-dimensional optimization process which simultaneously adjusts the spark timing and air-fuel ratio of a lean-burn natural gas fueled engine has been demonstrated. This has been done by first mapping the thermal efficiency against spark timing and equivalence ratio at a single speed and load combination to ...
M. L. Franklin +3 more
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<div class="htmlview paragraph">A two-dimensional optimization process which simultaneously adjusts the spark timing and air-fuel ratio of a lean-burn natural gas fueled engine has been demonstrated. This has been done by first mapping the thermal efficiency against spark timing and equivalence ratio at a single speed and load combination to ...
M. L. Franklin +3 more
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FISITA World Congress 2021 - Technical Programme, 2021
The latest advances in power density and efficiency of internal combustion engines (ICEs), both diesel direct injection (DI) compression ignition (CI), and gasoline positive ignition (PI), DI and jet ignition (JI), ICEs, are transferrable to single fuel or dual fuel hydrogen engines (H2-ICEs). H2-ICEs have the potential to deliver peak efficiency about
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The latest advances in power density and efficiency of internal combustion engines (ICEs), both diesel direct injection (DI) compression ignition (CI), and gasoline positive ignition (PI), DI and jet ignition (JI), ICEs, are transferrable to single fuel or dual fuel hydrogen engines (H2-ICEs). H2-ICEs have the potential to deliver peak efficiency about
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A theory for ignition and deflagration of fuel drops
2nd Annual Meeting, 1965A theory for ignition and burning of a fuel drop in an oxidizing gas is presented. The model employs a "modified flame surface" denned by use of a "delta function" but retaining effects of finite reaction kinetics. Mass fraction profiles of reactants and products, and temperature profiles are presented; and the mass burning rate as a function of ...
RICHARD L. PESKIN, HENRY WISE
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Progress in Energy and Combustion Science, 2011
Abstract Natural gas is a fossil fuel that has been used and investigated extensively for use in spark-ignition (SI) and compression-ignition (CI) engines. Compared with conventional gasoline engines, SI engines using natural gas can run at higher compression ratios, thus producing higher thermal efficiencies but also increased nitrogen oxide (NO x
T. Korakianitis +2 more
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Abstract Natural gas is a fossil fuel that has been used and investigated extensively for use in spark-ignition (SI) and compression-ignition (CI) engines. Compared with conventional gasoline engines, SI engines using natural gas can run at higher compression ratios, thus producing higher thermal efficiencies but also increased nitrogen oxide (NO x
T. Korakianitis +2 more
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Oxidation and Ignition Characteristics of Hydrocarbon Fuels
1990Abstract : A research program studying the oxidation and ignition characteristics of hydrocarbon fuels has been conducted. The research program entailed mechanistic studies examining the oxidation chemistry of single- component hydrocarbons and ignition studies examining the overall ignition behavior of pure single-component fuels and binary and ...
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Physical and Chemical Processes Controlling Fuel Droplet Ignition
40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 2004*† The ignition delay for the incipient sustained reaction of hypergolic propellants is of crucial importance. Too short of a delay c an lead to injector damage while too long of a delay can lead to very large pressure spikes and engine failure.
Timothee Pourpoint, William Anderson
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Diesel Fuel Composition Effects on Ignition and Emissions
SAE Technical Paper Series, 1993<div class="htmlview paragraph">Four broad boiling range materials, representative of current and future feedstocks for diesel fuel, were processed to two levels of sulfur and aromatic content. These materials were then distilled into six to eight fractions each. The resulting 63 fuels were then characterized physically and chemically, and tested
Thomas W. Ryan, Jimell Erwin
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Shock ignition of thermonuclear fuel: principles and modelling
Nuclear Fusion, 2014Shock ignition is an approach to direct-drive inertial confinement fusion (ICF) in which the stages of compression and hot spot formation are partly separated. The fuel is first imploded at a lower velocity than in conventional ICF. Close to stagnation, an intense laser spike drives a strong converging shock, which contributes to hot spot formation ...
ATZENI, Stefano +6 more
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Pre-Ignition and Knock Behavior of AIcohol Fuels
SAE Technical Paper Series, 1982<div class="htmlview paragraph">The design and adjustment of modern engines is limited by combustion behavior of the fuels. In the application of present fuels knock is the dominating factor, usually defined as Research -and Motor Octane Numbers (RON and MON). Alternative fuels prove to be different in some cases.
Holger Menrad +2 more
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Stratification by Fuel Injection and Positive Ignition
2019Of many types of IC Engines, two types, namely diesel and petrol engines, are well established. Each one of them has certain limitations. The full load power characteristics of petrol engine are very good, but the degree of air utilization is also high. Diesel engines have part load characteristics but have poor air utilization.
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