Honda Motor Co., Ltd.

Toshihiko Kanezaki

Naoki Ogiwara

Takatsugu Koyama

Kazuo Miyagawa

Yusuke Ishikawa

Satoru Kawase

Satoshi Kawasaki

Hideo Watanabe

Kazuyuki Kadowaki

Tadahisa Nakamura

Jin Nishio

Kentaro Miura

A gas control system includes a high pressure tank, a temperature sensor, a pressure sensor, an injector, and a gas control ECU. The high pressure tank includes a liner, a reinforcing layer, and a discharge hole for discharging hydrogen gas from the liner. The temperature sensor detects the temperature of the reinforcing layer or the temperature around the outside of the high pressure tank. In the implementation of the gas control method, the gas control ECU, based on temperature information detected by the temperature sensor and pressure information detected by the pressure sensor, changes the timing of starting limiting control for limiting the discharge of hydrogen gas.

Gas control system and gas control method

In a fuel cell vehicle and a method of controlling the fuel cell vehicle, when a gas pressure in a high pressure tank becomes less than a first threshold pressure, the SOC of an energy storage device is increased to a margin SOC. When the gas pressure becomes a second threshold pressure which is lower than the first threshold pressure, the amount of fuel released from the high pressure tank is limited to prevent the occurrence of buckling, and limit the travel driving force by the motor to a required limit. At the time of limiting the travel driving force, electrical energy of the energy storage device is used to provide assistance in a manner that the travel driving force by the motor becomes the travel driving force of the required limit.

Method of controlling fuel cell vehicle and the fuel cell vehicle

A vehicle is provided with an interior chamber apart from a passenger compartment, and a container chamber in which a high pressure gas container is accommodated. A heat generating body is accommodated in the interior chamber. Further, in the vehicle, there are formed introduction ports through which atmospheric air is introduced into the interior chamber, a communication passage that enables communication between the interior chamber and the container chamber, and a lead-out port through which the atmospheric air is led out from the container chamber. The atmospheric air that is introduced into the interior chamber through the introduction ports flows into the container chamber via the communication passage, and furthermore, is led out to the exterior of the container chamber from the lead-out port.

Vehicle equipped with high pressure gas container

A high pressure tank includes: a supplying/discharging hole; and a cap having formed therein a cap-side path which is a part of a flow path. A repelling coating interposes between a liner-side end surface facing a resin-made liner, of a flange section configuring the cap, or a flange section-facing outer surface facing the flange section, of the liner. The repelling coating is formed of a material that repels a matrix resin of a fiber-reinforced resin configuring a reinforced layer.

High pressure tank and method of manufacturing same

A high pressure tank includes: a liner made of a resin; a reinforced layer covering an outer surface of the liner; and a cap having formed therein a supplying/discharging hole for supplying/discharging a fluid to/from the liner. This cap includes: a flange section interposing between the liner and the reinforced layer; and an exposed section exposed from the reinforced layer. Furthermore, in this high pressure tank, a protective member is arranged between the flange section and the reinforced layer.

High pressure tank

A high pressure tank apparatus includes a high pressure tank, a leaked fluid container, and a supply/discharge side discharge flow path. The high pressure tank includes a liner made of resin, a reinforced layer that covers an outer surface of the liner, an insertion member that has formed therein a supply/discharge hole capable of communicating with an inside of the liner and the supply/discharge flow path; and a supply/discharge side cap in which are formed an insertion hole through which the insertion member is inserted and a supply/discharge side draw-out hole that draws out the fluid interposed between the liner and the reinforced layer. The supply/discharge side discharge flow path guides a temporarily released fluid that is the fluid drawn out via the supply/discharge side draw-out hole to a discharge region.

High pressure tank apparatus

A high pressure tank includes: a resin liner for containing a fluid; a reinforced layer covering an outer surface of the liner; and a cap including a supply/discharge hole for supplying and discharging the fluid to and from the liner. Gas vent passages formed in the cap each including at one end a first opening open toward the cap-facing surface of the liner and at the other end a second opening open toward at least one of an inside of the supply/discharge hole and an outside of the reinforced layer. A cross-sectional area of the gas vent passage at the one end perpendicular to a longitudinal direction and the first opening are smaller than other cross-sectional areas of the gas vent passage perpendicular to the longitudinal direction.

A high pressure tank of a high pressure tank apparatus includes: a resin-made liner; a reinforced layer covering an outer surface of the liner; and a supplying/discharging hole to which a supplying/discharging flow path is connected via a connecting section. A storage section is capable of storing a leaked fluid that has leaked from the connecting section and a temporary release fluid that has been led out from between the liner and the reinforced layer. A control section, when an internal pressure detection value of the high pressure tank due to a pressure sensor is greater than a threshold value, judges whether the leaked fluid has occurred, based on a detection result of a sensor detecting a concentration of a hydrogen gas inside the storage section, and otherwise does based on a detection result of the pressure sensor.

High pressure tank apparatus and method of leakage judgment of same

A high pressure tank includes: a resin liner for containing a fluid; and a cap including a supply/discharge hole. A cylindrical portion formed with the liner in a protruding manner is inserted in the supply/discharge hole. In a seal groove formed in an inner circumferential surface of the supply/discharge hole, a seal member and a back-up member disposed on an upstream side of the seal member in the supply direction are provided. A tapered groove surface of the seal groove facing toward the back-up member is apart from the outer circumferential surface of the cylindrical portion along the supply direction. A tapered member surface of the back-up member facing toward the tapered groove surface has a diameter expanding along the supply direction.

A high pressure tank includes a resin liner, a cap, a seal member, and a collar. The liner contains fluid. The cap has a supply/discharge hole for supplying/discharging the fluid to/from the liner. The collar has a passage hole connected to the supply/discharge hole. A tubular portion of the liner is inserted into the supply/discharge hole, and held between an outer circumferential surface of the collar and an inner circumferential surface of the supply/discharge hole. The seal member is provided in a seal groove formed in the inner circumferential surface of the supply/discharge hole. A fluid inlet channel is formed at least in one of the cap and the collar, for guiding the fluid from a protruding end of the tubular portion into the seal groove through space between the inner circumferential surface of the supply/discharge hole and the outer circumferential surface of the tubular portion.

A pressure tank includes a resin liner, a base, a seal, and a collar. The resin liner contains fluid therein. The resin liner has a tubular portion via which an inside of the resin liner communicates with an outside of the resin liner. The base includes a supply/discharge hole in which the tubular portion is inserted. The seal is provided between the tubular portion and the base in the supply/discharge hole. The collar has a through-hole and inserted into the tubular portion.

Pressure tank

A pressure gas container includes a liner to store a gas, a reinforcing layer provided on an outer side of the liner, a boss attached to the liner, and an attachment attached to an outer surface of the liner. The boss has an opening through which the gas is introduced into the liner and through which the gas inside the liner is released. The attachment is to support the liner rotatably when the reinforcing layer is provided. At least one of the boss and the attachment has a gas release channel that allows communication between a gap formed between the outer side and an inner side of the reinforcing layer and a space outside the pressure gas container to release the gas having permeated through the liner and present in the gap between the liner and the reinforcing layer to the space.

Pressure gas container and vehicle including the same

A remaining lifetime of a pressure vessel mounted on a fuel cell vehicle or the like and comprises a liner at its inner side and a reinforcing layer at its outer side can be predicted with high precision and in short time. An artificial imperfect structure is formed at an outer surface of the liner in a size capable of being maintained by a weakest part of a hydrogen gas tank throughout the total period of use of the hydrogen gas tank. A detector is, for example, comprised of a crack gauge intervening between the liner and the reinforcing layer, and is fixed to the outer surface of the liner close to the artificial imperfect structure. A crack length increases accompanying the increase of a pressure cycle of an internal pressure caused by usage of the hydrogen gas tank. The detector increases a resistance value accompanying a crack growth.

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Wako, Japan

Toshihiko Kanezaki