Toyoda Gosei Co., Ltd.

Isuzu Motors Limited

Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Sukehiro Sawada

Tamiyoshi Ohashi

Osamu Hokari

Yoshihiko Hyodo

Masayuki Nakagawa

Takashi Ohta

Akane Okada

Takaaki Ito

Tomohide Aoki

Norio Sato

Hisao Hanabusa

Masami Mizuno

Nobutaka Morimitu

Fuel reservoir apparatus can maintain and control pressure within a fuel tank at a low level during an operation of an engine, and also can prevent excessive refuelling. The fuel reservoir apparatus includes the fuel tank, a canister, a fuel vapor passage, a positive pressure valve, a solenoid valve, and a closure valve. The fuel tank stores liquid fuel to be supplied to the engine of an automobile. The canister can adsorb the fuel vapor. The fuel vapor passage connects the fuel tank to the canister. The positive pressure valve is provided in the fuel vapor passage for controlling pressure within the fuel tank, using a spring force. The solenoid valve is provided in the fuel vapor passage and adapted for opening during the operation of the engine to flow the fuel vapor towards the canister. The closure valve is provided in the fuel vapor passage for closing the fuel vapor passage when fuel is supplied to the fuel tank.

Fuel reservoir apparatus

A liquid fuel storage device is provided for use with an automobile system including an engine, a fuel tank, and a canister for absorbing fuel vapor during refueling. The device includes an air bag disposed in the fuel tank and constructed and arranged to inflate to occupy a space in the fuel tank in accordance with an amount fuel remaining in the fuel tank. Piping structure communicates the fuel tank with the engine for inflating the air bag by reducing pressure in the fuel tank when the engine is started. An air introduction pipe communicates with the atmosphere and includes a first valve mechanism for introducing air into the air bag and prevents air from escaping from the air bag after inflation thereof. An air emission pipe includes a second valve mechanism, which is opened only in refueling to emit air in the air bag during refueling. The air emission pipe is connected to the canister.

Liquid fuel storage device

An evaporation loss control device provided with a polymer chamber filled with polymer absorbent, a charcoal chamber filled with charcoal, introduction and purging pipes for connecting the polymer chamber with a fuel tank and an engine intake passage, respectively, an air pipe for ventilation connected to the charcoal chamber, and a vapor passage, which has various forms. For example, the vapor passage may be formed in spiral to encircle the polymer chamber, or provided between the polymer and charcoal chambers, thus allowing the evaporated fuel to pass therethrough. The vapor passage is constructed to prevent the evaporated fuel trapped by the polymer absorbent from flowing into the charcoal chamber, and also to prevent the liquid fuel from being absorbed by the charcoal.

Evaporation loss control device

Growing community of inventors

Inazawa, Japan

Sukehiro Sawada