Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . s the main exhaustport of the brake valve. Cavity P is for the purposeof connecting port O in the main valve seat with theexhaust passage C. Port N in the main valve is for the purpose ofincreasing the area of port A when the handle is infull release position, thereby allowing a full and freepassage from main reservoir into the trainpipe whenreleasing the brakes. Passage O begins in the cap of the valve body, 102A, and passes through t
Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . s the main exhaustport of the brake valve. Cavity P is for the purposeof connecting port O in the main valve seat with theexhaust passage C. Port N in the main valve is for the purpose ofincreasing the area of port A when the handle is infull release position, thereby allowing a full and freepassage from main reservoir into the trainpipe whenreleasing the brakes. Passage O begins in the cap of the valve body, 102A, and passes through the wall of the cover, 115A,of the brake valve, when it sinks into the valve body,101A, and ends up in the main slide valve seat, underthe main slide valve. Passage H, which leads from chamber D, passesthrough the body of the brake valve to the pipe con-nection with the supplementary reservoir. A smallball valve, 184, in the equalizing piston is for the pur-pose of supplying air to the supplementary reservoir, 6oo LOCOMOTIVE ENGINEERING so that the trainpipe pressure and chamber D pressuremay equalize when the brake valve is in either running F E J AG CTK. Main Reservoir Train PipeFigure 254New York Engineers Brake Valve, Emergency Position or release position. The vent valve in the end of theequalizing piston is for the purpose of controlling the AUTOMATIC AIR BRAKES 601 bottom end of passage O. The purpose of passageand port O is to allow the pressure in chamber D toescape to the atmosphere when the equalizing pistonis forced back to its normal position. The functionof the excess pressure valve, 97, is to maintain agiven pressure in the trainpipe when the handle ofthe brake valve is in running position. The functions of the several notches on the quadrantare as foUows: When the handle is in the extremeforward position, main reservoir pressure is feddirectly into the trainpipe, the first notch, which isalso indicated by a small pin on the side of thequadrant, is running positio
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlocomot, bookyear1916
