Ignition System Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
TDG | A | Transdigm Group Inc. | 0.46 | |
VHI | B | Valhi, Inc. | 2.38 | |
WWD | B | Woodward, Inc. | 1.25 | |
PFIE | B | Profire Energy, Inc. | -1.76 | |
NL | C | NL Industries, Inc. | -2.63 | |
CIX | C | CompX International Inc. | -1.08 | |
SMP | D | Standard Motor Products, Inc. | -0.89 |
Related Industries: Aerospace & Defense Auto Parts Chemicals Industrial Distribution Oil & Gas Equipment & Services Security & Protection Services
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
AWEG | C | Alger Weatherbie Enduring Growth ETF | 11.62 | |
XAR | A | SPDR S&P Aerospace & Defense ETF | 9.4 | |
MISL | A | First Trust Indxx Aerospace & Defense ETF | 7.93 | |
SUPP | C | Engine No. 1 ETF Trust Engine No. 1 Transform Supply Chain ETF | 7.79 | |
ITA | A | iShares U.S. Aerospace & Defense ETF | 6.49 |
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- Ignition System
An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition internal combustion engines, oil-fired and gas-fired boilers, rocket engines, etc. The widest application for spark ignition internal combustion engines is in petrol (gasoline) road vehicles such as cars and motorcycles.
Compression ignition Diesel engines ignite the fuel-air mixture by the heat of compression and do not need a spark. They usually have glowplugs that preheat the combustion chamber to allow starting in cold weather. Other engines may use a flame, or a heated tube, for ignition. While this was common for very early engines it is now rare.
The first electric spark ignition was probably Alessandro Volta's toy electric pistol from the 1780s.
Siegfried Marcus patented his "Electrical igniting device for gas engines" on 7 October 1884.
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