spark plug
Synonyymisanakirja
spark plug
sähkölaite, sytytystulppa, kynttilä, tulppa.
Englannin sanakirja
spark plug (englanti > suomi)
spark plug englanniksi
The part of an internal combustion engine which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke.
The spark plug is quite simple in theory: It forces electricity to arc across a gap, just like a bolt of lightning. The electricity must be at a very high voltage in order to travel across the gap and create a good spark. Voltage at the spark plug can be anywhere from 40,000 to 100,000 volts. http://www.auto.howstuffworks.com/ignition-system2.htm