Difference between revisions of "ignition delay"

Latest revision as of 11:17, 28 December 2021

Ignition Delay aka ID (Abbreviation for Ignition Delay) refers to a time frame:

diesel engines - between SOI and self-ignition of fuel mix inside the engine cylinder. Usual ignition delay is considered to be 5° CsR, and varies with cylinder temperature/pressure. With cold engine and partial loads, it may be as high as 10°. In an engine with optimal operational temperature and full load, ignition delay may be as low as 2° CsR.
petrol engines - it takes to fully ignite the mixture with a spark plug. Typically, 15-35° BTDC depending on the engine speed.

ECU compensates for various engine conditions.

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-[[ignition delay|Ignition Delay]] aka [[ID]] (Abbreviation for '''I'''gnition '''D'''elay) is an concept in internal combustion engine that measures a lag between [[SOI]] and start of combustion process.
+[[ignition delay|Ignition Delay]] aka [[ID]] (Abbreviation for '''I'''gnition '''D'''elay) refers to a time frame:
+<br>
-In [[TDi]] engines usual [[ignition delay]] is about 5° crankshaft angle at cruise speeds and partial load. In cold engine it could be 10° crankshaft angle or just 2.5° crankshaft angle at full load.
+<br>
+* diesel engines - between [[SOI]] and self-ignition of fuel mix inside the engine cylinder. Usual [[ignition delay]] is considered to be 5° [[CsR]], and varies with cylinder temperature/pressure. With cold engine and partial loads, it may be as high as 10°. In an engine with optimal operational temperature and full load, [[ignition delay]] may be as low as 2° [[CsR]].
+* petrol engines - it takes to fully ignite the mixture with a spark plug. Typically, 15-35° [[BTDC]] depending on the engine speed.
+<br>
 [[ECU]] compensates for various engine conditions.
 [[Category:automotive]]