FUEL LEVEL MONITORING SYSTEM FOR COMBUSTION-POWERED TOOLS

摘要

Combustion tool (10) includes a spark initiator (46) configured to initiate spark events, and a fuel level monitoring system (56) configured for monitoring the fuel level in a fuel cell (50) and indicating the monitored fuel level to a user. Included in the fuel level monitoring system is a programmable control unit (66) configured to control the spark initiator (46) and to count the spark events initiated by the spark initiator, to compare a number of spark events with at least two predetermined ranges of spark events, and to determine the fuel level in the fuel cell based on the determinations. An indicator (58) controlled by the programmable control unit is supplied for providing the user with an indication of the fuel level in the fuel cell.