Compartmental evaporative canister and pressure control valve assembly

Patent · Tue Sep 22 04:00:00 EDT 1992

OSTI ID:7167074

Reddy, S R

This patent describes a fuel vapor storage canister assembly for an engine fuel system. It comprises: a main vapor storage compartment, an auxiliary vapor storage compartment, a vapor inlet/outlet aperture to the main compartment, and adapted for connection to a fuel tank and a source of engine vacuum, an atmospheric vent opening to the auxiliary compartment, a connective means between the main compartment and the auxiliary compartment, and a control valve, and wherein the control valve is biased to prevent vapors from flowing from the main compartment into the auxiliary compartment, and is responsive to pressure in the main compartment to permit the diaphragm to unseat from against the connective means and allow the connective means to be open when the pressure in the main compartment reaches a selected level, whereby substantially all vapor is collected in the main compartment.

• Assignee: General Motors Corp., Detroit, MI (United States)
• Patent Number(s): A; US 5148793
• Application Number: PPN: US 7-702859
• OSTI ID: 7167074
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330603 -- Vehicle Design Factors-- Engine System
CONTROL
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLUIDS
FUEL SYSTEMS
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PRESSURE CONTROL
VAPORS