Designing Valve GearingE. & F.N. Spon, 1875 - 283 σελίδες |
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Σελίδα
... as to be of little or no assistance to the majority of those who most need to use them . To illustrate the truth of this statement , we have but to take the very excellent treatise on valve gears by Dr. Gustav Zeuner . In.
... as to be of little or no assistance to the majority of those who most need to use them . To illustrate the truth of this statement , we have but to take the very excellent treatise on valve gears by Dr. Gustav Zeuner . In.
Σελίδα
Edward J. Cowling Welch. treatise on valve gears by Dr. Gustav Zeuner . In this work we find enunciated formulæ for almost every description of valve gear , but a glance at its pages will show that these invariably involve an amount of ...
Edward J. Cowling Welch. treatise on valve gears by Dr. Gustav Zeuner . In this work we find enunciated formulæ for almost every description of valve gear , but a glance at its pages will show that these invariably involve an amount of ...
Σελίδα 11
... gear . Draw the line C D ( Fig . 4 ) , representing the direction of the travel of the end of the eccentric rod furthest from the sheave , and it is in this line that the point A , the centre of the crank- shaft , will lie . Draw BG at ...
... gear . Draw the line C D ( Fig . 4 ) , representing the direction of the travel of the end of the eccentric rod furthest from the sheave , and it is in this line that the point A , the centre of the crank- shaft , will lie . Draw BG at ...
Σελίδα 18
... gear , and the relative movements of the same can be at once determined . SIMPLE VALVE GEAR . PROBLEM I. The throw of the 18 DESIGNING VALVE GEARING . PRINCIPLES UPON WHICH THE GRAPHIC METHOD BASED.
... gear , and the relative movements of the same can be at once determined . SIMPLE VALVE GEAR . PROBLEM I. The throw of the 18 DESIGNING VALVE GEARING . PRINCIPLES UPON WHICH THE GRAPHIC METHOD BASED.
Σελίδα 19
Edward J. Cowling Welch. SIMPLE VALVE GEAR . PROBLEM I. The throw of the eccentric sheave , the external lap of the valve , and the amount of lead required , being known ; to find the position of the crank when the steam is cut ... GEAR . 19.
Edward J. Cowling Welch. SIMPLE VALVE GEAR . PROBLEM I. The throw of the eccentric sheave , the external lap of the valve , and the amount of lead required , being known ; to find the position of the crank when the steam is cut ... GEAR . 19.
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Συχνά εμφανιζόμενοι όροι και φράσεις
amount equal amount of lead Bisect brought into gear central position centre line close the port crank reaches crossed rods cutting the arc cutting the line cylinder dead-point describe arcs intersecting describe the arc describe the circle diameter describe divides the arc eccentric rods engine Euclid EXPANSION GEARING expansion valve find the point find the throw full gear given amount given position intersecting the line Join length line A B link diagram link-motion main valve circle main valve eccentric MCNP motion open an amount open rods parallel perpendicular point E point F posi position relative primary main valve Problem proportion radius equal radius rod radius vector reaches the position real position represent the centre represent the position represent the throw required to find right angles shaft single virtual eccentric slider spindle steam-port Stephenson's straight line throw and position triangle valve eccentric sheave valve gear valve-spindle virtual eccentric arm
Δημοφιλή αποσπάσματα
Σελίδα 2 - BAC shall be a right angle; and the angle in the segment ABC, which is greater than a semicircle, shall be less than a right angle ; and the angle in the segment ADC, which is less than a semicircle, shall be greater than a right angle. Join AE, and produce BA to F.
Σελίδα 3 - ABC must be less than a right angle : and therefore the angle in a segment ABC greater than a semicircle, is less than a right angle. And...
Σελίδα 1 - The angle in a semicircle is a right angle; the angle in a segment greater than a semicircle is less than a right angle; and the angle in a segment less than a semicircle is greater than a right angle.