Advertisement
Assembly Instructions
Steam Roller D375, D376, D377 & Traction Engine D415, D416, D417
The Energy Transformation in the Cylinder
The diagrams on the right show what actually
happens inside the power converting system
(piston and cylinder) when fire and water are
brought together to produce mechanical energy,
energy to drive a drilling machine, a saw,
locomotive or steam roller.
In the first diagram the steam can be seen passing to
the left side of the piston, pushing the piston to the
right. At the same time the exhaust steam from the
previous stroke is directed, by the other port on the
slide valve, out into the atmosphere, having done its
useful work.
Just before the piston reaches the end of it 뭩 travel,
on the extreme right, the slide valve cuts off the
steam from the boiler. This is the point, where the
crank is at the limit of its movement and is known as
Top-dead-centre or Bottom-dead-centre? Referring
to the two possible geometric positions. The flywheel
carries the crank over this critical position by the
energy it has stored from previous power strokes.
The slide valve continues to move in the same
direction this time opening the inlet port to admit
steam to the right hand side of the piston, again
pushing the piston but now to the left, exhausting the
steam through the left hand port. The whole cycle
being repeated when the Dead centre is reached
once more.
Text & illustrations: Wilesco Wilhelm Schröder GmbH & Co., Germany
Advertisement
