Concept

Ignition system

Related publications (16)

Ignition and Combustion Behavior in Solid Propellant Microsystems Using Joule-Effect Igniters

Nico de Rooij, Danick Briand, Volker Gass, David de Koninck

A study of solid propellant ignition and combustion of potassium dinitrobenzofuroxanate in Joule-heating pyrotechnical microelectromechanical systems igniters is carried out using a high-speed framing camera. The effect of igniter geometry, propellant form ...

2011

A SHADOW MASK-EVAPORATED TOPSIDE PYROMEMS IGNITER

Nico de Rooij, Danick Briand, David de Koninck

A shadow mask-evaporated pyroMEMS igniter is presented. The metallization was successfully carried out without ignition or any visible degradation of the propellant charge during evaporation. Directly depositing the Joule-heating igniter onto the propellan ...

2010

Facilitating skilled right hand motor function in older subjects by anodal polarization over the left primary motor cortex

Friedhelm Christoph Hummel

Healthy ageing is accompanied by limitations in performance of activities of daily living and personal independence. Recent reports demonstrated improvements in motor function induced by noninvasive anodal direct current stimulation (tDCS) of the primary m ...

Elsevier2010

Experimental investigation of prechamber autoignition in a natural gas engine for cogeneration

Daniel Favrat, Stefan Heyne, Michael Meier

A novel ignition concept based on autoignition in an unscavanged prechamber is currently being developed at the Laboratory for Industrial Energy Systems (LENI). On a single cylinder test engine a series of experimental runs (CR=8.5-14, =1-1.6, RPM=1150/150 ...

2009

NUMERICAL FLOW SIMULATION OF A NATURAL GAS ENGINE EQUIPPED WITH AN UNSCAVANGED AUTO-IGNITION PRECHAMBER

Daniel Favrat, Jan-Bernhard Vos, Stefan Heyne, Dirk Wunsch

This work is part of ongoing research on stationary natural gas engines equipped with unscavanged prechambers. Spark ignition inside the prechamber has been successfully proven with natural gas as well as biogas, reducing emissions while keeping good effic ...

2007

Prechamber autoignition of gaseous mixtures: numerical simulation with detailed chemistry and testing on engine test bench

Daniel Favrat, Stefan Heyne

The work accomplished during the second period of the project mainly focused on the experimental evaluation of the prechamber system comparing its performance regarding emissions and efficiency to standard spark ignition mode. Further instrumentation of th ...

2007

Controlled Auto-Ignition (CAI) in Engine Combustion Prechamber

Daniel Favrat

Unscavenged prechamber ignition has recently been developed at LENI-EPFL to reduce the emissions from cogeneration spark ignition gas engines (natural gas and biogas) within the Swiss Motor project supported by the Federal Office of Energy. Prechambers fit ...

2003

Investigation of the prechamber geometrical configuration of a natural gas spark ignition engine for cogeneration: part. I, numerical simulation

Daniel Favrat, Roger Röthlisberger

The effects and the consequences of transferring the ignition point of the conventional combustion chamber into a small unscavenged prechamber were evaluted through a numerical simulation based on the CFD-code KIVA- 3V. The prechamber flow characteristics ...

2003

Comparison between direct and indirect (prechamber) spark ignition in the case of a cogeneration natural gas engine, part II : engine operating parameters and turbocharger characteristics

Daniel Favrat, Roger Röthlisberger

In a first paper (part I), prechamber ignition in cogeneration natural gas engines has been shown to significantly intensify and accelerate the combustion process, offering a further potential to reduce the exhaust gas emissions while keeping efficiency at ...

2002

Unscavenged Combustion Prechamber as a way to Improve Efficiency and Emissions of a Lean-Burn Cogeneration Biogas Engine: Comparison with Natural Gas

Daniel Favrat, Roger Röthlisberger

Gaseous fuels produced, for example, by waste or agricultural by-products fermentation (biogas) can be burned in-situ by cogeneration systems like spark-ignition internal combustion engines. However, the more and more stringent legislation for exhaust gas ...

2002

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