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US 5,884,604 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.
A multi-cylinder engine having a plurality of intake passages, at least one of said fuel injectors communicating with at least one of the plurality of the intake passages, a balance passage interconnecting said intake passages to one another, and a fuel supply system which supplies fuel to the fuel injector, the fuel supply system including a fuel vapor separator communicating with said balance passage.
Dependencies are inferred from the claim text.