Designing Valve GearingE. & F.N. Spon, 1875 - 283 σελίδες |
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Αποτελέσματα 1 - 5 από τα 18.
Σελίδα 9
... commences to advance . We have already shown that the crank must advance through the same angular distance as the sheave ; therefore , in order to ascertain the distance the valve has travelled from its central position for any angular ...
... commences to advance . We have already shown that the crank must advance through the same angular distance as the sheave ; therefore , in order to ascertain the distance the valve has travelled from its central position for any angular ...
Σελίδα 13
... commence to open the port until it has moved a distance equal to the lap AQ , therefore in moving from its central position A to L , it moves a distance A Q , before beginning to open the port , which it commences to do when it reaches ...
... commence to open the port until it has moved a distance equal to the lap AQ , therefore in moving from its central position A to L , it moves a distance A Q , before beginning to open the port , which it commences to do when it reaches ...
Σελίδα 14
... commences to open , it is only necessary to bear in mind that it must be such a position as will give a radius ... commences to open , hence it follows that AK is the assumed position of the crank when the valve commences to open the ...
... commences to open , it is only necessary to bear in mind that it must be such a position as will give a radius ... commences to open , hence it follows that AK is the assumed position of the crank when the valve commences to open the ...
Σελίδα 15
... commences to open the port when the crank is in the position AK , we can in like manner show that the valve just closes the port when the centre line of the crank reaches the position A P , and passes through the point in which the ...
... commences to open the port when the crank is in the position AK , we can in like manner show that the valve just closes the port when the centre line of the crank reaches the position A P , and passes through the point in which the ...
Σελίδα 16
... commences , is at the dead point on the right or left of the centre line BG ; for instance , if the real position of the crank , with reference to the real position of the sheave were at the dead point A C ( Fig . 4 ) , then the ...
... commences , is at the dead point on the right or left of the centre line BG ; for instance , if the real position of the crank , with reference to the real position of the sheave were at the dead point A C ( Fig . 4 ) , then the ...
Άλλες εκδόσεις - Προβολή όλων
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.