摘要:
According to the present invention, there is provided a device for diagnosing malfunction in a fuel tank. The fuel tank has a separator wall therein which separates an interior of the fuel tank into a fuel chamber and an air chamber. The separator wall is deformable according to an amount of fuel in the fuel chamber. The device comprises a device for detecting a change of at least one of a position of the separator wall, the pressure in the tank and the concentration of fuel vapor in the tank, and a device for diagnosing malfunction of the separator wall on the basis of the change to diagnose that the separator wall has malfunction when the change differs from a predetermined regular change.
摘要:
A fuel storing device for an automobile, having a flexible separator means disposed in a fuel storage container for separating the inside of the fuel storage container into a fuel storage portion and a space portion, comprises a fuel suction pipe inlet opening keeping means for keeping the opening for withdrawing fuel open in said fuel storage portion. The fuel suction pipe inlet opening keeping means prevents the inlet opening of the fuel suction pipe from being covered, and thereby all of the fuel can be sucked while any fuel is left in the device.
摘要:
According to the present invention, there is provided a device for diagnosing malfunction in a fuel tank. The fuel tank has a separator wall therein which separates an interior of the fuel tank into a fuel chamber and an air chamber. The separator wall is deformable according to an amount of fuel in the fuel chamber. The device comprises a device for detecting a change of at least one of a position of the separator wall, the pressure in the tank and the concentration of fuel vapor in the tank, and a device for diagnosing malfunction of the separator wall on the basis of the change to diagnose that the separator wall has malfunction when the change differs from a predetermined regular change.
摘要:
According to the present invention, there is provided a device for diagnosing malfunction in a fuel tank. The fuel tank has a separator wall therein which separates an interior of the fuel tank into a fuel chamber and an air chamber. The separator wall is deformable according to an amount of fuel in the fuel chamber. The device comprises a device for detecting a change of at least one of a position of the separator wall, the pressure in the tank and the concentration of fuel vapor in the tank, and a device for diagnosing malfunction of the separator wall on the basis of the change to diagnose that the separator wall has malfunction when the change differs from a predetermined regular change.
摘要:
A fuel pressure control apparatus includes a valve for controlling an internal pressure of a fuel tank, the valve including a valving member, a valve seat, and an actuating member for pressing the valving member on the valve seat under a set pressure; and a pressure adjusting part for adjusting the set pressure of the actuating member of the valve to a first set pressure when an engine is operating, the first set pressure being higher than an atmospheric pressure and allowing the internal pressure of the fuel tank to be in equilibrium with the first set pressure, and for adjusting the set pressure of the actuating member to a second set pressure when the engine stops operating, the second set pressure being higher than the first set pressure, thus allowing the internal pressure of the fuel tank to be increased, when the engine stops operating, to a pressure higher than the first set pressure.
摘要:
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.
摘要:
According to the present invention, there is provided a fuel reserving device for reserving fuel therein. The device comprises a fuel tank for reserving fuel therein, and a fuel vapor tank for reserving fuel vapor therein. The fuel vapor is fed from said fuel tank to said fuel vapor tank and returned from said fuel vapor tank to said fuel tank. The fuel vapor is not returned from said fuel vapor tank to said fuel tank when a pressure in said fuel tank would be higher than a predetermined pressure if the fuel vapor was returned from said fuel vapor tank to said fuel tank.
摘要:
Three-way VSV switches a passage in communication with pressure sensor either to the atmosphere or to three-way VSV. The three-way VSV is provided in bypass passage connecting fuel tank with canister to switch the path to the fuel tank side or to the canister side with respect to tank internal-pressure control valve. As properly switching the three-way VSVs, the pressure sensor can detect both the pressure in the evaporation purge system and the atmospheric pressure. Upon diagnosis of defect a difference is calculated between the in-system pressure and the atmospheric pressure detected, which cancels out the dispersion or the like upon production of the pressure sensor, thus enabling to detect an accurate pressure change.
摘要:
A failure diagnosing apparatus makes an judgment as to whether or not a failure occurs in an evaporated fuel processing apparatus in which an evaporated fuel within a fuel reservoir is adsorbed by an activated charcoal within a canister and the evaporated fuel adsorbed by the activated charcoal is purged to an intake system of an internal combustion engine under a certain operational condition. An atmospheric air is introduced into the fuel reservoir when the fuel is supplied to the fuel reservoir. Accordingly, there is a fear that a misdiagnosis is performed if the failure diagnosis is performed during fuel supply. Accordingly, when the internal combustion engine is in operation and in fuel supply condition, the failure judgement process by the failure diagnosing apparatus is forbidden.
摘要:
In order to improve read stability, a printing condition is set based on not visual read of a user, but read with an optical information reading apparatus. A printing quality evaluation apparatus includes: an image acquiring section that acquires an image; a symbol extracting section that extracts the symbol in which the printing quality can be evaluated from the captured images acquired by the image acquiring section; a printing quality evaluation section that evaluates the printing quality of the symbol extracted by the symbol extracting section; an identification information recognition section that recognizes the identification information identifying each printing condition of the symbol; and an evaluation output section that outputs the identification information, which is recognized by the identification information recognition section, and an evaluation result of the printing quality of the printing quality evaluation section according to the symbol extracted by the symbol extracting section.