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美国Fairbanks Morse公司的38D8—1/8×10型发动机其缸径为206毫米,总活塞行程为508毫米。该发动机有两种类型活塞。老式38D8—1/8型发动机的活塞,其凹形顶部对于活塞圆周是偏心的(见附图右侧),其活塞绡是固定式的。在水上舰艇,对于装有固定式活塞销的发动机,活塞环应按附图右侧所示布置在两个活塞上。在工作表面上嵌有青铜环的气环,其青铜环宽1.98毫米,它伸出气环表面0.076毫米,并嵌入一道环槽内。这道环槽是沿气环圆周在工
The 38B8-1 / 8 × 10 engine from Fairbanks Morse, USA has a bore of 206 mm and a total piston travel of 508 mm. The engine has two types of pistons. The piston of an old-fashioned 38D8-1 / 8 engine has a concave top that is eccentric to the circumference of the piston (see the right side of the figure) and whose piston 绡 is stationary. On a watercraft, for engines with fixed piston pins, the piston rings should be arranged on the two pistons as shown on the right of the figure. Bronze rings are embedded in the work surface. The width of the bronze ring is 1.98 mm. It protrudes 0.076 mm from the surface of the ring and is embedded in a ring groove. This ring groove is along the circumference of the ring workers