Patent ID: 6672289
Filing Date: 2004-01-06
Classification: F02M

Abstract:
A micro-pulsation fuel injection system with underpressure stabilizer, comprising:a fuel supply system, further comprising a micropump, ejecting vaporized fuel into an intake pipe, which leads to a cylinder of an internal combustion engine, so that said vaporized fuel is taken into said cylinder; a fuel tank, supplying fuel to an inlet of said micropump through a fuel supply pipe; and a compression pump, connected with said fuel supply pipe and generating underpressure therein; wherein by pressure variations in said intake pipe a membrane inside said compression pump is driven to be elastically deformed, causing a change of volume of a fuel chamber, so that fuel from said fuel supply pipe is sucked in to be returned to said fuel tank via a backflow pipe, resulting in underpressure in said fuel supply pipe.