Drain pipe in canister system

Abstract

In order to discharge air cleaned free from evaporated fuel vapor in a canister installed under the front seat floor, have none of the air coming inside a passenger room and inhibit water, dirt and dust from being absorbed in a drain pipe in a canister, the following drain pipe in a canister is invented. The drain pipe in canister is connected with a canister body installed under a front seat floor of a vehicle. The drain pipe in the canister comprises a first part extending from the canister body up to an upper portion of an engine room disposed on a front side of a passenger room, and a second part extending from the first part to a portion under a floor of the passenger room.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The object and features of the present invention will become more readily apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a side elevation view briefly illustrating a fuel tank system inclusive of a drain pipe in a canister system of the present invention;

FIG. 2 is a plan view briefly illustrating a drain pipe in a canister system of the present invention;

FIG. 3 is a perspective exploded view of essential parts of a drain pipe in a canister system of the present invention;

FIG. 4 is a enlarged figure indicating a drain pipe in a canister system of the present invention seen from under a vehicle and the installation condition of a canister body;

FIG. 5 is an enlarged cross sectional view illustrating the drain pipe in a canister system seen when cut along the X-X line in FIG. 4; and

FIG. 6 is an enlarged cross sectional view illustrating a drain pipe in a canister system of the present invention and an essential part of a drain pipe in a canister system.

Claims

1. A drain pipe in a canister system which is connected with a canister body installed under a front seat floor of a vehicle, the drain pipe, comprising; a first part extending from the canister body up to an upper space of an engine room disposed on a front side of a passenger room, anda second part extending from the first part to a space under a floor of the passenger room, which communicates with an atmosphere under the floor of the passenger room.

2. A drain pipe in a canister system according to claim 1, further comprising a drain filter installed at or in a vicinity of a highest portion of the drain pipe in the canister system.

3. A drain pipe in a canister system according to claim 2, further comprising a branch pipe which an auxiliary pipe branches from and is installed in a vicinity of the drain filter and on an atmosphere exposed side of the drain filter, wherein the branch pipe has a double concentric pipe structure.