Aisan Kogyo Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Aisan Industry Co., Ltd.

Yutaka Yamada

Kazumi Haruta

Takashi Kato

Fumiyoshi Noda

Isamu Suzuki

Takayuki Usui

Kiyoshi Isogai

Ituo Koga

Yoshihiro Kanome

Takashi Minami

Satoru Ikeda

Shigeru Suzuki

Etsuo Sugiyama

A water pump including a pump housing having a central axial through-hole; a pump shaft inserted in the through-hole; a pulley fixed on the pump shaft at one end thereof; an impeller fixed on the pump shaft at the other end thereof; a bearing fitted with the through-hole for rotatably supporting the pump shaft in the vicinity of the pulley; a water seal provided between the impeller and the bearing for sealing water in a pump chamber where the impeller is installed, wherein an intermediate chamber is defined among the pump housing, the bearing and the water seal. A first ventilation passage is formed in a wall of the pump housing so as to induce an atomspheric air into the intermediate chamber. A second ventilation passage is formed in the wall of the pump housing so as to discharge a water vapor in the intermediate chamber to an outside of the pump housing. A vacuum generating portion is formed by rotation of the pulley in the vicinity of an outlet of the second ventilation passage opening to a space defined between the pulley and the pump housing, whereby when the pulley is rotated, the water vapor in the intermediate chamber is positively ventilated through the second ventilation passage by vacuum to be generated in the vacuum generating portion.

Water pump

A fuel vapor collecting device comprising an activated carbon receiving chamber filled with activated carbon particles. Each of the activated carbon particles contains heat accumulating solid fillers which are uniformly distributed therein. The heat accumulating solid fillers are made of a metallic material having a specific heat which is larger than that of the activated carbon.

Fuel vapor collecting device

A canister device is used to collect fuel vapors generated in a vapor space within a gasoline tank and those generated in a filler neck thereof while the tank is being filled in a vapor absorbing material accommodated therein. The accumulated fuel vapors are purged from the canister utilizing the source of vacuum generated in an intake manifold while the engine is running. The canister device includes a casing accommodating a vapor absorbing material layer, a first intake port provided at the intermediate portion of the casing and communicating with the vapor space in the fuel tank, a second intake port provided in one side wall of the casing and communicating with the interior of the filler neck of the fuel tank, an air port provided on the other side wall of the casing and opened into air ambient the casing, and a purge port communicating with the source of vacuum and positioned at a location or two of the casing such that the air flowing into the canister through the air port is discharged through the vapor absorbing material layer.

Canister device for use in gasoline tank

The invention relates to a horizontally mounted canister having a evaporated fuel supply port and a purge port provided on one side of an absorber chamber therein, an atmospheric air port provided on the other side thereof, a movable tray pushing one side surface of the absorber, and an additional absorber chamber which projects upward at the top and which is provided in the absorber chamber.

Canister for capturing evaporated fuel

A canister for absorbing fuel vapors includes a vapor-absorbing adsorbent layer contained in a cylindrical, laterally-mounted casing, an intake port and a purge port which are provided at one side of the adsorbent material layer, an air port provided at the other side of the adsorbent layer, fixed filters and perforated retaining plates for retaining the two sides of the vapor absorbing material layer, and a device for preventing a space from occurring in the adsorbent layer, the device being provided in an upper wall portion of the casing and including a tubular guide having a lower end opening into the adsorbent layer, a plunger fitted into the guide slidably in the vertical direction, and a spring for urging the plunger downward.

Canister for adsorbing fuel vapors

A helically-shaped intake port comprising a helical portion formed around an intake valve, and a substantially straight inlet passage portion tangentially connected to the helical portion. A bypass passage is branched off from the inlet passage portion and connected to the helical portion. A rotary valve is arranged in the bypass passage and actuated by a vacuum operated diaphragm apparatus. The rotary valve is opened when the amount of air fed into the cylinder of an engine is increased beyond a predetermined value. The diaphragm apparatus comprises a diaphragm and a control rod interconnecting the diaphragm to the rotary valve. A first stop and a second stop, which are engageable with the housing of the diaphragm apparatus, are fixed onto the control rod for retaining the rotary valve at the full open position and at the completely closed position, respectively.

Growing community of inventors

Hekinan, Japan

Yutaka Yamada