20140299106 | Autonomous Multi-Fuel Engine Using Gaseous Fuels - An engine uses gaseous fuel from an intermittent fuel source and a backup fuel source. A fuel supply and control system includes intermittent and backup fuel supply lines, a sensor, a flow control device, and an engine controller. The intermittent and backup fuel supply lines deliver gaseous fuel from the intermittent and backup fuel sources to the engine. The sensor detects fluctuations in gaseous fuel availability within the intermittent fuel supply line and outputs a signal responsive to the fluctuations. The flow control device selectively enables gaseous fuel to the engine from either the intermittent fuel source or the backup fuel source. The engine controller receives the signal from the sensor and, responsive to the received signal, operates the flow control device to select between the intermittent fuel source and the backup fuel source as the supply of gaseous fuel to the engine. | 10-09-2014 |