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Operational Theory
Index
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The piston is NOT at mid stroke at 90° crank angle! |
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Maximum velocity occurs at about 70° After Top Dead
Centre. |
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The piston is accelerating fastest as it comes over Top
Dead Centre. |
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The theoretical cycle on which the 2 stroke diesel engine cycle
is based. |
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The dual combustion cycle is closer to the 2 stroke
diesel engine cycle |
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Shows the PV diagram, crank angle and out of phase
diagram for a 2 stroke engine. |
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The thrust on the crosshead guides varies with piston
load and conrod angle. |
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How to calculate the air
required for combustion of fuel oil |
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How to
calculate the energy release when burning a fuel |
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James
Watt and the Horsepower. Watts it all about! |
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Talk the
Torque The relationship between torque, work and power |
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Calories
to Joules. And just what is a BTU? |
IN THE
MEMBERS SECTION:
Power
Cards: What they are and how to interpret them.
Out of
phase and draw cards: What they are, and how to take
them.
Procedure for taking
indicator cards.
Computer
derived indicator cards.
The
light spring diagram: What it is, and faults that it
shows.
Faults with indicator diagrams
The
difference between Mean Indicated Pressure (MIP) and
Mean Effective Pressure (MEP) The water brake.
How to balance an engine using peak pressures.
Other methods of assessing engine power: Manufacturers
Graph, Torsionmeter
Propeller curves
and Engine Load Diagrams
Downloadable spreadsheets for piston position, velocity and
acceleration.
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