英语翻译The ring travel area is defined as the area from the cro
英语翻译
The ring travel area is defined as the area from the crown of the cylinder bore to 5/16” below the bottom of exhaust port towards cylinder mounting flange.The cylinder in the ring travel area must not have a radial rate of change in excess of 0.0001 in 15 degrees nor accumulate to a rate of change in excess of 0.0003 in 90 degrees.
The cylinder bore must not be out-of-round in excess of 0.0005 extending from the crown to the top of the exhaust port.From the bottom of the ring travel area to the cylinder skirt,the bore may tape an additional 0.0005 inches larger only.
The bore shall be straight and perpendicular to the flange as specified on the applicable drawing.Deviation of any element of the cylinder from a straight line shall not be at a rate greater than 0.0004 per inch and shall not accumulate to more than 0.0005”.
The application of the chromium deposition shall be in a continuous operation.Double plating is not allowed.The chromium deposit shall be homogeneous,uniform in appearance and free from pits,nodules,blisters and defects except as specifically permitted by this specification.
Cylinders shall be cleaned after all mechanical operations (such as grinding,honing,deburring,etc) to remove all residue from those operations,and/or chromium cracked or loosened during those operations.Cylinders must be clean and free from extraneous materials that could cause premature scuffing or wear or pistons or rings or that could be otherwise detrimental to engine operation.