Fuel vapor leak check module

Details Fuel vapor leak check module Fuel vapor leak check module

2006-11-21

2006-11-21

McCall, Eric S. (Department: 2855)

Measuring and testing

With fluid pressure

Motor part or auxiliary

C073S118040

Reexamination Certificate

active

07137288

ABSTRACT:
A fuel vapor leakage check module has a canister port which is provided so that the port can be opened to the air and is connected to the interior of a fuel tank through a canister for absorbing fuel vapor produced in the fuel tank. A pump depressurizes or pressurizes the interior of the fuel tank through the canister port. A connecting passage which is coaxially provided in the canister port, is connected to the canister port. The connecting passage is depressurized or pressurized by the pump. A standard orifice is coaxially provided in the connecting passage and reduces the passage area of the connecting passage.

REFERENCES:
patent: 5894474 (1999-04-01), Maison et al.
patent: 6820467 (2004-11-01), Streib
patent: 6834535 (2004-12-01), Kano et al.
patent: 2003/0051541 (2003-03-01), Kano et al.
U.S. Appl. No. 10/911,555, filed Aug. 25, 2004 titled, “Fuel Vapor Leak Check Module” Inventor: Kobayashi et al.
U.S. Appl. No. 10/911,555, filed Aug. 2004, Kobayashi et al.
U.S. Appl. No. 10/923,005, filed Aug. 2004, Tsuruta et al.
U.S. Appl. No. 10/923,774, filed Aug. 2004, Kobayashi et al.
U.S. Appl. No. 10/923,786, filed Aug. 2004, Kano et al.

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