Power, Efficiency And Controls Flashcards
Clearence volume.
Distance above TDC.
Total volume.
Distance between TDC and BDC.
Swept volume,
Total volume - clearnce volume.
Length of stroke x area.
Compression ratio
cylinder volume with the piston at bottom dead centre to the cylinder volume at top dead centre.
Mecanical effiency.
Measures the effectiveness of an engine in turning the input power into useful output power.
Most engines 80% efficent.
Thermal efficeny.
how effective the engine is at converting the energy contained within fuel to producing mechanincal work.
Increases as compression ratio increases.
RPM gauge
Measures crankshaft RPM.
Manifold pressure gauge.
Measures manifold pressure in Hgin.
Boost pressure gauge.
Measures manifold pressure in PSI relative to mean sea level pressure.
Oil pressure gauge.
Measures the oil pressure just after the pressure filter.
Oil temperature gauge.
Measures the oil temperature in the oil return line.
CHT gauge.
Measures the temperature of the hottest cylinder.
EGT gauge.
Measures the temperature of the exhaust gas stream.
Fuel pressure gauge.
Measures fuel pump output pressure.
Why should you allow engine to cool at shut down?
Prevent thermal shock.
