A fuel system for an internal combustion engine wherein the fuel pressure is maintained within a desired predetermined range. An electric fuel pump supplies fuel at a pressure proportional to the electric power applied to the pump. Control circuitry compares a voltage signal corresponding to the fuel...http://www.google.com/patents/US4756291?utm_source=gb-gplus-sharePatent US4756291 - Pressure control for the fuel system of an internal combustion engine
