A motor vehicle fuel system operable selectively to supply metered quantities of petrol or LPG in its gaseous state to a carburetter induction passage. The LPG system includes a pair of digital injection valves in a body having a common inlet, a common outlet and an outlet chamber into which the gaseous...http://www.google.fr/patents/US4617904?utm_source=gb-gplus-shareBrevet US4617904 - Air/fuel induction system for a multi-cylinder internal combustion engine
Air/fuel induction system for a multi-cylinder internal combustion engine
