Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . the positionOE, when it closes, and compression takes place until it iagain reaches OS for admission, and one revolution is jcompleted. By placing the Zeuner diagram upon this, draw HJperpendicular to FG, and with the radius OH of the jeccentric circle as a diameter, draw the admission valvecircle OVH/iO, and the lap circle with the steam lap asa radius and find the intersection occurs at V, both with !the circles and the previously la
Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . the positionOE, when it closes, and compression takes place until it iagain reaches OS for admission, and one revolution is jcompleted. By placing the Zeuner diagram upon this, draw HJperpendicular to FG, and with the radius OH of the jeccentric circle as a diameter, draw the admission valvecircle OVH/iO, and the lap circle with the steam lap asa radius and find the intersection occurs at V, both with !the circles and the previously laid down admission line.|OS, and the cut-off point at the intersections at n. On the Iline OH set off the width of the steam port from L \toward H equal to Lw; and with Ow as radius draw the !arc KmK. The shaded figure enclosed by the letters WALSCHAERT VALVE GEAR 759 VKKf/L represents the steam port opening during theadmission period, and the width of the port opening at anydesired position of the crank is found by measuring thedistance radially from O between the lap and valvecircles on the port line, as the case may be, on the de-sired crank FIG. 337 The exhaust openings are determined in the same man-ner and are shown on opposite side of FG, where thecrank passes through the arc DJE during the exhaustperiod, with a positive exhaust lap of the size the exhaust edge of the valve is line and line,this arc becomes GFJ, or 1800, and when a negative lap 760 LOCOMOTIVE ENGINEERING (clearance) occurs, the duration of the exhaust periodexceeds the half revolution of the crank. The variousevents are indicated around the eccentric circle on thefigure as they take place during a complete turn of thecrank. .
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlocomot, bookyear1916
