Multi-Cylinder Capacitive Discharge Ignition System with Solid State Distribution

1971 ◽  
Author(s):  
David T. Cavil
Keyword(s):  
Solid State ◽  
State Distribution ◽  
Capacitive Discharge ◽  
Ignition System ◽  
Discharge Ignition

Validation of a Directed Energy Ignition System on a Large-Bore Single Cylinder Gas-Fueled Engine

2020 ◽  
Author(s):  
Forrest Pommier ◽  
David Lepley ◽  
Greg Beshouri ◽  
Timothy Jacobs
Keyword(s):  
Natural Gas ◽  
Combustion Process ◽  
Engine Performance ◽  
Engine Operation ◽  
Capacitive Discharge ◽  
Ignition System ◽  
Single Cylinder ◽  
Spark Plug ◽  
Discharge Ignition ◽  
Directed Energy

Abstract The natural gas industry has seen a considerable increase in production recently as the world seeks out new sources of economical, reliable, and more environmentally friendly energy. Moving this natural gas requires a complex network of pipelines and compressors, including reciprocating engines, to keep the gas moving. Many of these engines were designed more than 40 years ago and must be retrofit with modern technologies to improve their performance while simultaneously reducing the harmful emissions that they produce. In this study a directed energy ignition system is tested on a two-stroke, single cylinder, natural gas-fired engine. Stability and emissions will be observed throughout a range of spark waveforms for a single speed and load that enables the most fuel-lean operation of the engine. Improving the combustion process of the legacy pipeline engines is a substantial area of opportunity for reducing emissions output. One means of doing so is by improving an engines ability to operate at leaner conditions. To accomplish this, an ignition system needs to be able to send more energy to the spark plug in a controlled manner than a tradition capacitive-discharge ignition system. Controlling the energy is accomplished by optimizing the structure of the waveform or “profile” for each engine design. With this particular directed energy ignition system, spark profiles are able to be configured by changing the duration and amount of current sent to the spark plug. This study investigates a single operating speed and load for 9 different spark energy configurations. Engine operation at these test conditions will allow for emissions and engine performance data, using directed energy, to be analyzed in contrast to capacitive-discharge ignition.

scholarly journals PEMBUATAN ALAT PENDETEKSI KESALAHAN PADA PEMASANGAN TERMINAL BATERAI KENDARAAN

2016 ◽  
Vol 3 (1) ◽  
pp. 34
Author(s):  
Saparudin Saparudin ◽  
Sukma Firdaus ◽  
Marlia Adriana
Keyword(s):  
Light Emitting Diode ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Electronic Control ◽  
Capacitive Discharge ◽  
Light Emitting ◽  
Discharge Ignition

Dunia otomotif berkembang sangat cepat, contohnya pada sistem pengapian kendaraan, mulai dari penggunaan platina, Capacitive Discharge Ignition (CDI), dan sekarang Electronic Control Unit (ECU) yang memerlukan sistem kelistrikan. Sumber listrik utama pada kendaraan adalah baterai yang menyuplai arus searah. Hasil putaran mesin di ubah oleh dinamo isi menjadi energi listrik, salah satu fungsinya untuk mengaktifkan material pada komponen baterai yang tidak bisa terus menerus aktif menyuplai daya listrik. Maka dari itu perawatan  pada aki harus dilakukan secara berkala, mulai dari mengecek kondisi baterai sampai mengganti dengan baterai yang baru. Pada saat pergantian baterai, terminal baterai dilepas dan dipasang kembali. Dalam hal ini, terdeteksi terjadinya kesalahan pada saat pemasangan terminal baterai, baik karena kelalaian, terburu-buru dan hal lain yang memacu serta produksi kendaraan hanya memberikan indikasi kutub baterai dengan tanda dan warna,  yang tidak bisa menjamin hal tersebut.  Dampak yang ditimbulkan adalah kendaraan tidak dapat dihidupkan. Current Protector adalah sebuah alat yang dapat mendeteksi, mengamankan dan memberitahukan apabila terjadi kesalahan pada saat pemasangan terminal baterai. Alat ini tersusun oleh komponen-komponen elektronik dioda, relay, resistor, light emitting diode (LED), Buzzer  dan sekering. Sehingga, meskipun pemasangan terminal aki tertukar, kendaraan masih dapat dihidupkan.

scholarly journals Disk Chemistry and Cometary Composition

2005 ◽  
Vol 13 ◽  
pp. 518-521 ◽  
Author(s):  
A. J. Markwick ◽  
S. B. Charnley
Keyword(s):  
Solid State ◽  
Theoretical Study ◽  
Carbon Chain ◽  
Radial Variation ◽  
Chemical Processing ◽  
State Distribution ◽  
Physical Conditions ◽  
Short Period ◽  
Apparent Variation ◽  
Protosolar Nebula

AbstractWe describe a theoretical study of protoplanetary disk chemistry. By considering physical conditions similar to that of the protosolar nebula, we attempt to assess the contribution made by material from the cooler nebular regions to cometesimal composition. Calculations are presented which determine the spatial and temporal chemistry of the gas and dust within the 5-40 AU comet-forming region of the nebula. We show that there is little radial variation in the solid-state distribution of some molecules which could potentially be parents of the carbon-chain species observed in comets. We conclude that the apparent variation in abundance of C2 and C3 between long- and short-period comets is the result of chemical processing during their lifetimes and not differences in composition at the time of formation.

Development of Advanced Laser Ignition System for Stationary Natural Gas Reciprocating Engines

2005 ◽  
Author(s):  
Bipin Bihari ◽  
Sreenath B. Gupta ◽  
Raj R. Sekar ◽  
Jess Gingrich ◽  
Jack Smith
Keyword(s):  
Natural Gas ◽  
Operating Conditions ◽  
Combustion Stability ◽  
Laser Ignition ◽  
Nox Emissions ◽  
Ignition System ◽  
Performance Improvements ◽  
Discharge Ignition ◽  
Reciprocating Engines ◽  
Load Conditions

Laser ignition is considered the prime alternative to conventional coil based ignition for improving efficiency and simultaneously reducing NOx emissions in lean-burn natural gas fired stationary reciprocating engines. In this paper, Argonne’s efforts towards the development of a viable laser ignition system are presented. The relative merits of various implementation strategies for laser based ignition are discussed. Finally, the performance improvements required for some of the components for successful field implementation are listed. Also reported are efforts to determine the relative merit of laser ignition over conventional Capacitance Discharge Ignition (CDI) ignition. Emissions and performance data of a large-bore single cylinder research engine are compared while running with laser ignition and the industry standard CDI system. It was primarily noticed that NOx emissions reduce by 50% under full load conditions with up to 65% reductions noticed under part load conditions. Also, the lean ignition limit was significantly extended and laser ignition improved combustion stability under all operating conditions. Other noticeable differences in combustion characteristics are also presented. Efforts wherein ignition was achieved while transmitting the high-power laser pulses through optical fibers showed performance improvements similar those achieved by using free-space laser ignition.

Solid-state distribution analysis of sulfisoxazole tablets

1973 ◽  
Vol 67 (2) ◽  
pp. 486-488 ◽  
Author(s):  
L.V. Allen ◽  
V.A. Yanchick ◽  
D.D. Maness ◽  
M.A. Wilkov
Keyword(s):  
Solid State ◽  
Distribution Analysis ◽  
State Distribution

A Continuous Discharge Ignition System for EGR Limit Extension in SI Engines

2011 ◽  
Vol 4 (1) ◽  
pp. 677-692 ◽  
Author(s):  
Terrence Alger ◽  
Jess Gingrich ◽  
Barrett Mangold ◽  
Charles Roberts
Keyword(s):  
Ignition System ◽  
Discharge Ignition ◽  
Si Engines ◽  
Continuous Discharge
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