Internal pressure adjusting system for a fuel tank and method th

Details Internal pressure adjusting system for a fuel tank and method th Internal pressure adjusting system for a fuel tank and method th

1998-03-12

2000-03-07

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

F02M 3302

Patent

active

RE0366005

ABSTRACT:
A internal pressure adjusting system and method for a fuel tank mounted on an automobile is to provide a fuel vapor control system preventing from flowing out the fuel vapor to atmosphere while the engine is stopping. The internal pressure adjusting system and method is to further provide a fuel vapor control system preventing from flowing out the fuel vapor to the atmosphere by adjusting the internal pressure of the fuel tank in a proper value when the internal pressure excessively rises during refueling and operating the engine, and preventing from damage of the tank from excessively a negative pressure in the tank. Therefore, it never carelessly flows out the fuel vapor to atmosphere even if the large amount of fuel vapor is generated in the upper space of the fuel tank.

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