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US 5,816,209 AGranted
Fuel injection system
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorMasahiko Kato
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorMasahiko Kato
Estimating the term…
A fuel injection system for an internal combustion engine provides a uniform flow of gaseous and liquid fuel to each of the intake passages of the engine. A balance passage interconnects each of the intake manifolds to each other and balances the pressure within the intake passages. A pressure regulator regulates the fuel pressure at the fuel injector. A reference pressure chamber within the pressure regulator communicates with the balance passage and controls the fuel pressure based on the balanced pressure within intake passages. The balance passage also communicates with a vapor separator of the fuel supply system that separates liquid fuel from gaseous fuel. The balance passage promotes even distribution of the gaseous fuel to the intake passages. The fuel injection system also includes plenum chamber that acts a source of air for the engine. The plenum chamber includes an drain outlet that communicates with the balance passage for returning blown back fuel from the plenum chamber to the intake passages.
An engine comprising an induction system including a plurality of intake passages, a plurality of fuel injectors, at least one of the fuel injectors communicating with a corresponding intake passage at an injection point within the corresponding intake passage, and a balance passage interconnecting together the plurality of intake passages, the balance passage communicating with each intake passage of said plurality of intake passages at the corresponding injection point within the intake passage, and a fuel supply system communicating with said fuel injectors, said fuel supply system including a pressure regulator which communicates with at least one of said intake passages at the corresponding injection point.
Dependencies are inferred from the claim text.