Development of an Autobalance System for Legacy Slow-Speed Integral Engines
This paper will describe the development of an automatic, continuous engine pressure balancing system that has been installed on a Cooper-Bessemer 10V250 on the Williams Gas Pipeline system. The autobalance system uses permanently installed pressure monitoring that provides pressure information to a continuous feedback control system. This system uses an electronic fuel valve to adjust fuel delivery for each cylinder to achieve near perfect balance for all unit operating conditions. Topics to be covered will include system design features, fuel valve development, total system cost, combustion diagnostics, and the effects of autobalancing on combustion statistics, fuel consumption, exhaust emissions, and mechanical condition.