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ABNORMAL_COMBUSTION_KNOCK_PRODUCED_BY_SURFACE_IGNI...
1.
ABNORMAL_COMBUSTION_KNOCK_PRODUCED_BY_SURFACE_IGNITION_IN_SI_ENGINES_IS_NOT_HARMFUL_AS_NORMAL_COMBUSTION_KNOCK.?$
A.
True
B.
False
Answer» C.
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ABNORMAL_COMBUSTION_KNOCK_PRODUCED_BY_SURFACE_IGNITION_IN_SI_ENGINES_IS_NOT_HARMFUL_AS_NORMAL_COMBUSTION_KNOCK.?$
Swirl ratio is defined as the ratio of air rotational speed to crankshaft rotational speed?
When ignition occurs the nucleus of the flame spreads with the whirling or rotating vortices in the form of ragged burning crust from the initial spark plug ignition site.
The flame propagation velocities range from
Turbulence decreases the heat flow to the cylinder wall and in the limit excessive turbulence may extinguish the flame.
The degree of turbulence increases _____________ with the piston speed.
The amount of vortex activity,and the disintegration of others, _____________ the turbulent flow with rising engine speed.
____________ consists of randomly dispersed vortices of different sizes which become superimposed into the air and petrol mixture flow stream.
The _____________ is defined by the parallel portion of the piston and cylinder head which almost touch each other as the piston approaches T.D.C.
Swirl is the rotational flow of charge within the cylinder about the axis.
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