Fuel for a working cylinder chamber (8) of an internal combustion engine is drawn through an atomizing nozzle (39) from an accumulator (30). Fuel is supplied by a low pressure source (12) through a variable constriction (16) linked to the throttle (4) and through a solenoid valve which is pulsed at a...http://www.google.ca/patents/US4617898?utm_source=gb-gplus-sharePatent US4617898 - Fuel delivery to internal combustion engines