Fuel saving system for IC engine - has secondary throttle flap in by=pass to reduce fuel during braking and downhill travel

摘要

The fuel-saving system has a by-pass channel (18) connecting a point between the air filter (7) and the main nozzle at the end of the fuel supply line to a point downstream of the main throttle flap (6). The by-pass channel has its own secondary throttle flap (11) coupled to the main throttle flap such that it closes when the main flap opens. Alternatively, the secondary flap is controlled separately. A solenoid valve controls fuel supply. A centrifugal force controller switches the starter circuit on and off depending on speed. The starter circuit contains a switch coupled to the main throttle flap.