Toyo Roki Seizo Kabushiki Kaisha

Takashi Sakagami

Kazuya Matsuura

Kouichi Ikuma

Hiroyasu Ohsawa

Kenji Yano

Takenori Suzuki

Kazuhiro Yamaguchi

The fuel cap includes an outer cap as an outer envelope, an inner cap removably fitted in the outer cap through an opening therein, a canister located in a space between the outer cap and the inner cap for adsorbing a vaporized fuel. The fuel cap closes a fuel filler port for feeding a fuel to a fuel tank. The canister adsorbs a vaporized fuel vaporized from the fuel in the fuel tank. At least one of the outer cap and the inner cap defines a communication hole communicating with the space and an exterior. The canister includes a housing; and an adsorbent accommodated therein. The housing defines, on an end surface directed to the inner cap, an inlet for vaporized fuel and on another end surface directed to the outer cap, an outlet for gas.

Fuel cap and vaporized fuel adsorption canister used in the fuel cap

A case holding mechanism includes a holding member and a member to be held thereby, one being mounted to the case and another to a body to which the case is to be held. The member to be held includes a first pair of parallel guide portions and another pair of parallel guide portions perpendicular to the one paired guide portions. The holding member disposed to be movable with respect to the guide portions therealong in a state restricted in thickness direction of the guide portions and adapted to hold the member to be held. The holding member includes a pair of slide portions slidable along outer surfaces of one paired guide portions, a lock portion extending between the paired slide portions in parallel with the one paired guide portions and engaged with the other paired guide portions, and a base portion connecting the slide portions and the lock portion.

Case holding mechanism

In a canister, an activated charcoal layer is placed in a fluid passage by which an air intake port is connected to a charge port or purge port, and a chamber dividing the charcoal layer into sections so as to traverse the fuel passage is defined by a grid and a filter pad placed on the surface of the grid. The grid has apertures uniformly formed on the surface of the grid contacting with the filter pad, so as to communicate with the chamber. Formation of the apertures on the surface of the grid prevents the filter pad from coming into the mesh of the grid, thus maintaining flatness of the filter pad.

Canister

A canister has: a canister body including an adsorbent case which is provided with an adsorption chamber filled with an adsorbent and a fuel steam introduction port, a purge port and an air communication port which are communicated with the adsorption chamber; and a filter body. The canister body and the filter body are communicated with each other through a communication passage, in which a leak detection valve is disposed to be detachable through an end opening formed to the communication passage.

Canister provided with a leak detection valve for treating evaporated fuel

An oil mist filter capable of removing oil mist and separating liquids of low viscosity. A filter section in the oil mist filter is of two-stage construction. The filter section includes a filter body disposed in the upper stage for arresting oil mist and a support body disposed in the lower stage to support the filter body and capable of separating gas fuel. A space is defined below the filter body. When passing through the filter body the oil mist in the gas fuel is arrested by the filter body. The liquid content in the gas fuel is collected below the filter body in the upper stage, and then moves under its own weight along the support body in the lower stage until it is collected in the space. The gas fuel having its liquid content removed is passed through the support body and fed to the engine.

Oil mist filter

A canister having a liquefied fuel treating function capable of flexibly coping with layout restrictions without the need to bend the purging path in the middle. The canister having the liquefied fuel treating function includes a liquid storing case having an introducing path communicating with a fuel tank, and a purging path communicating with air inlet pipes of an engine; and a sucking path, provided in the liquid storing case, and sucking the liquefied fuel stored in the liquid storing case; which sucks up the liquefied fuel onto the purging path side by use of the flow of a fluid through the purging path; wherein the sucking direction of the liquefied fuel within the sucking path is caused to substantially agree with the flow direction of the fluid in the purging path. It is therefore possible to cope even with a case where the purging path extending upward must be provided on the ceiling surface of the canister having the liquefied fuel treating function because of the restrictions in layout, without the need to bend the purging path, by extending the purging path upward as it is in parallel with the sucking path.

Growing community of inventors

Hamakita, Japan

Takashi Sakagami