Ship&Offshore | Issue 06/2016
Valve rotator technology cuts engine wear
Rotocap | Federal-Mogul Powertrain, a division of Michigan-based Federal-Mogul Holdings Corporation, offers a comprehensive range of valve train technologies for large stationary and marine engines, with components such as valves, cotter and valve rotators developed by the company for engines with bore diameters of up to 640mm. While much of the technology is shared with engines of other types, Federal-Mogul Powertrain notes, valve rotators are mainly applied to engines operating below 2,500 rpm and with bore sizes from 150mm upwards, typically found in power generation and marine applications. The high valve mass and low dynamic effects of these engines means adequate valve rotation doesn’t occur naturally and must be supplemented in order to keep valve seats clean and equalise wear.