Fuel feed system
AssigneeOutboard Marine Corporation
InventorsHenry C. Billingsley, David J. Hartke, Glenn R. Belec
Life of this patent
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Abstract
The invention provides a fuel feed system for an internal combustion engine, the system including a fuel pump, a vapor separator including a fuel chamber having an inlet and an outlet and being adapted to contain a supply of fuel, the vapor separator including a float valve and a passage for venting fuel vapor from the chamber when the supply of fuel is below a predetermined level, and a vapor pump communicating with the passage and a source of cyclically varying pressure for pumping fuel vapor from the vapor separator and to a location remote from said source of alternating pressure, the fuel vapor pump operating independently of the fuel pump.
Claims13
A fuel feed system for an internal combustion engine, said system comprising
- a vapor separator including a fuel chamber having an inlet and an outlet and being adapted to contain a supply of fuel, said vapor separator including means for venting fuel vapor from said chamber when said supply of fuel is below a predetermined level,
- a fuel pump communicating with said vapor separator for supplying fuel to the internal combustion engine, and
- a vapor pump which is independent of said fuel pump and which is communicable with said means for venting fuel vapor and a source of cyclically varying pressure, said vapor pump including means for pumping fuel vapor from said vapor separator and to a location remote from the source of alternating pressure.
A fuel feed system for an internal combustion engine, said fuel feed system comprising
- a vapor separator having a fuel reservoir and a cover sealingly engaged with said fuel reservoir to form, with said reservoir, a fuel chamber adapted for containing a supply of fuel, said vapor separator including means for venting fuel vapor from said fuel chamber when said supply of fuel in said fuel chamber is below a predetermined level, and
- a vapor pump for pumping fuel vapor from said vapor separator, said vapor pump being located on said cover and communicable with said means for venting fuel vapor.
A fuel feed system for an internal combustion engine, said system comprising
- a fuel pump, and
- a vapor separator assembly including a fuel chamber adapted for containing a supply of fuel and having an inlet adapted to be connected to a fuel source and an outlet adapted to be connected to a carburetor, said assembly including means for venting fuel vapor from said fuel chamber when said supply of fuel is below a predetermined level, and said means for venting fuel vapor from said fuel chamber including a vapor pump which also serves to pump fuel from the fuel source to said assembly independently of said fuel pump.
A fuel feed system for an internal combustion engine, the system comprising
- a fuel pump communicating with the engine,
- a vapor separator located between a fuel source and said fuel pump, said vapor separator including a fuel chamber adapted to contain a supply of fuel, and means for venting fuel vapor from said chamber when said supply of fuel in said chamber is below a predetermined level, and
- a vapor pump which is independent of said fuel pump and which communicates with said venting means and with the engine independently of the communication of said fuel pump with the engine.
Dependencies are inferred from the claim text.