Effects of passive pre-chamber jet ignition on combustion and emission at gasoline engine
Pre-chamber jet ignition is a promising way to improve fuel consumption of gasoline engine. A small volume passive pre-chamber was tested at a 1.5L turbocharged GDI engine.
Wei Duan+5 more
doaj +1 more source
Spark Ignition Measurements in Jet A: part II [PDF]
An improved system for measuring the ignition energy of liquid fuel was built to perform experiments on aviation kerosene (Jet A). Compared to a previously used system (Shepherd et al. 1998), the present vessel has a more uniform temperature which can be
Lee, Julian J., Shepherd, Joseph E.
core
Combustion and performance characteristics of air-fuel mixtures ignited by means of photo-thermal ignition of Nano-Energetic Materials [PDF]
This work presents an experimental investigation to determine the performance and characteristics of the combustion process triggered by a new ignition system based on photo-thermal effect, observed when nano-Energetic Materials are exposed to a flash ...
A. Ficarella+3 more
core +1 more source
A statistical model to predict ignition probability [PDF]
Ignition capability is a critical design constraint for aeronautical gas turbines. However the current trend toward overall lean burn is detrimental to the engine ignition and relight and the ignition system must be adapted to ensure a fast and reliable light-round in all circumstances.
arxiv
Carbon Ignition in Type Ia Supernovae: An Analytic Model [PDF]
The observable properties of a Type Ia supernova are sensitive to how the nuclear runaway ignites in a Chandrasekhar mass white dwarf - at a single point at its center, off-center, or at multiple points and times. We present a simple analytic model for the runaway based upon a combination of stellar mixing-length theory and recent advances in ...
arxiv +1 more source
Designing for Degradation: Transient Devices Enabled by (Nano)Cellulose
Recent progress in transient devices enabled by (nano)cellulosic materials is reviewed. Transiency mechanisms, advantages of nanocelluloses, and a suite of applications are discussed. A circular thinking approach coupled with life cycle assessment is applied to critically revisit the potential, advantages, and challenges of nanocellulose‐enabled ...
Lucas J. Andrew+2 more
wiley +1 more source
Evaluation of ignition mechanisms in selected nonmetallic materials [PDF]
Test program evaluates thermal and electric ignition mechanisms in selected nonmetallic materials found in spacecraft with concentrated oxygen atmospheres.
Gerstein, M., Mc Lain, M., Ross, W.
core +1 more source
Carbon Ignition in Type Ia Supernovae: II. A Three-Dimensional Numerical Model [PDF]
The thermonuclear runaway that culminates in the explosion of a Chandrasekhar mass white dwarf as a Type Ia supernova begins centuries before the star actually explodes. Here, using a 3D anelastic code, we examine numerically the convective flow during the last minute of that runaway, a time that is crucial in determining just where and how often the ...
arxiv +1 more source
Epitaxial Ferroelectric Hexagonal Boron Nitride Grown on Graphene
The epitaxial growth of hexagonal boron nitride (h‐BN) multilayer films on graphene, synthesized on a miscut SiC (0001) substrate, is demonstrated using nitrogen plasma‐assisted molecular‐beam epitaxy. Robust ferroelectricity with switchable out‐of‐plane polarization via interlayer sliding is supported by theoretical and experimental insights ...
Sheng‐Shong Wong+17 more
wiley +1 more source
Characterization of a spark ignition system for flameholding cavities [PDF]
This paper presents an experimental investigation of a capacitive-discharge spark ignition system designed to promote ignition in CH- and CH-fuelled supersonic combustors.
Brieschenk S.+10 more
core +1 more source