7-54.
The amount of heat lost by an engine
cylinder through the exhaust is deter-
mined by the temperature in the
cylinder
1.
when exhaust begins
2.
after the charge is drawn in
3.
just before compression begins
4.
immediately after combustion occurs
7-55.
When exhaust valves are timed late,
what will be the effect on the
operation of an engine?
1.
Energy losses will increase due
to heat loss
2.
The engine will lose pressure
before all available work is obtained
3.
Insufficient amount air will enter
the cylinders for completed
combustion of the next charge
4.
Both 1 and 3 above
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