Abstract: A fluid control valve is made compact by changing the shape of a communication passage within the fluid control valve. The fluid control valve includes a valve casing, an electric valve disposed in the valve casing, and a relief valve disposed in the valve casing. The valve casing includes: a main passage that has a first valve port sealed by the electric valve; a bypass passage for bypassing the first valve port; a first valve chamber in fluid communication with the downstream side of the first valve port and housing the electric valve; and a second valve chamber in fluid communication with the upstream side of the first valve port and housing the relief valve. The bypass passage includes a communication passage configured to allow the first valve chamber and the second valve chamber to fluidly communicate with each other. The communication passage opens to a first side surface of the first valve chamber and/or into a side surface of the second valve chamber.

Abstract: A fuel supply device includes a fuel tank having an opening, a lid member closing the opening, a ring member holding an outer periphery of the lid member between the fuel tank and the ring member, an electrical component disposed within the fuel tank, and a contoller configured to control the electrical component and mounted on the ring member.

Abstract: An EGR gas distributor for distributing EGR gas to branch pipes of an intake manifold includes a plurality of gas distribution passages arranged side by side for the branch pipes, a gas inflow passage and a gas chamber to deliver the EGR gas to each of the gas distribution passages. The gas inflow passage includes two, first and second, gas passage parts branched in a single stage. When the EGR gas distributor is mounted on the intake manifold, a passage cross-section of each gas passage part perpendicular to a central axis has an uppermost vertex and a lowermost vertex. The passage cross-sections of the gas passage parts are sized such that their lengths in a vertical direction are gradually longer from an upstream side of the first gas passage part to a downstream side of the second gas passage part.

Abstract: An evaporated fuel processing may include: a canister disposed on a purge passage; a control valve disposed on the purge passage between an intake passage and the canister and switching between communication and cutoff states, the communication state where the canister and the intake passage communicate through the purge passage, and the cutoff state where communication between the canister and the intake passage is cut off on the purge passage; a pressure detector detecting a pressure in the purge passage on a canister side relative to the control valve; and a determining unit determining whether clogging is occurring in the purge passage between the control valve and the intake passage by using a difference between a pressure under the communication state and a pressure under the cutoff state that are detected by the pressure detector while the control valve repeatedly switches between the communication state and the cutoff state.

Abstract: A double eccentric valve: a valve seat; a rotary shaft; a valve gear with a rotary shaft base end portion; a motor rotating the shaft via a valve gear; bearings supporting the shaft in a cantilever manner; a return spring giving, to the valve gear, spring force for rotating the shaft in a valve body closing direction; and a full-close stopper to restrict valve gear rotation with the shaft when the valve body is fully closed. When the motor is not driven, the valve gear partially contacts the full-close stopper by spring force, moment acting on the valve gear is caused to act on the rotary shaft with the contact point serving as a fulcrum, the rotary shaft is tilted toward the valve seat with the contact point between the rotary shaft and the bearing serving as a fulcrum, and thus, the valve body is pressed against the valve seat.

Abstract: A pump module includes a pump section that discharges evaporated fuel generated in a fuel tank to an intake path of an internal combustion engine. The pump module also stores correction information for correcting a rotation speed of the pump section based on a difference between a reference discharge characteristic of a reference pump section at a predetermined rotation speed and a discharge characteristic of the pump section at the predetermined rotation speed.

Abstract: A tank closing structure includes a tank body configured to store a liquid, a lid member that closes an opening formed in the tank body and has a liquid swelling property, and a holding ring that holds a flange portion of the lid member on the tank body. The tank closing structure further includes a deformation promoting portion for promoting deformation in which a radially central portion of the lid member is recessed inward of the tank body in response to the swelling of the lid member.

Abstract: An evaporated fuel processing apparatus includes a canister to collect vapor generated in a fuel tank, a purge passage to purge vapor into an intake passage from the canister, a purge pump provided in the purge passage, a first trifurcated valve in the purge passage between an exhaust port of the purge pump and an outflow port of the purge passage, a second trifurcated valve provided in the purge passage between an inflow port of the purge passage and an intake port of the purge pump, a first bypass passage between the purge passage upstream of the second trifurcated valve and the first trifurcated valve, and a second bypass passage between the purge passage downstream of the first trifurcated valve and the second trifurcated valve. Passages for the vapor and others are switched by switching the first trifurcated valve and the second trifurcated valve during operation of the purge pump.

Abstract: An EGR gas distributor for distributing EGR gas to each of branch pipes of an intake manifold includes a gas chamber, a gas inflow passage, and a plurality of gas distribution passages. The inner wall of the gas chamber on a downstream side is divided into a plurality of downstream divided walls corresponding to the gas distribution passages. On the boundary between adjacent two of the downstream divided walls, a downstream ridge is provided in a perpendicular direction to the arrangement direction of the gas distribution passages. The downstream ridges are arranged side by side in number corresponding to the number of gas distribution passages. The downstream ridges each include a side surface in the arrangement direction. The downstream ridges are different in at least one of height and inclination angle of the side surface according to the positions of the downstream ridges.

Abstract: A leak detection apparatus performing leak detection with suppressing energy consumption includes a leak detection section performing the leak detection of detecting occurrence or non-occurrence of purge gas leakage in an evaporative-emission pipe based on a tank inside pressure measured by a pressure sensor by evaporating a fuel, which has been atomized by an atomizer or an ultrasonic wave generator, by a heater in a state in which the evaporative emission pipe is air-tightly sealed by a purge valve and an atmosphere open/close valve.

Abstract: An evaporated fuel processing device includes a casing and a protector. The casing and the protector are coupled to each other via a plurality of snap-fit mechanisms. The plurality of snap-fit mechanisms include engaged portions formed on one of the casing and the protector, and engaging portions formed on another of the casing and the protector.

Abstract: An evaporated fuel processing device that includes a pump configured to supply purge gas, which includes evaporated fuel in a fuel tank, to an intake passage of an engine through a purge passage; a controller configured to control the pump; and a detecting unit configured to acquire a gas amount introduced to the intake passage while the pump is being driven in a stable state where an air amount introduced from open air to the intake passage is stable, and configured to detect, by using change in the acquired gas amount, a state where the purge gas is unable to be normally supplied from the purge passage to the intake passage.

Abstract: An evaporated fuel treatment apparatus includes a canister, a purge passage, a purge pump, a purge valve, and a controller for executing purge control. The controller is configured to switch the purge valve to a closed state or an open state once, subsequently set a concentration sensing flag to ON, and then detect a purge concentration based on a pump downstream pressure or a pump differential pressure at a predetermined timing elapsed by a predetermined time from setting of the concentration sensing flag to ON.

Abstract: A fuel supply device is insertable into a fuel tank through an opening formed in an upper wall of the fuel tank in an insertion direction. The fuel supply device includes a flange unit and a pump unit coupled to the flange unit. The pump unit includes a guide member extending in the insertion direction. The guide member is configured to abut on an opening periphery so as to guide the pump unit when the pump unit is inserted into the fuel tank. A guide surface of the guide member includes a concave surface.

Abstract: In an evaporated fuel treatment apparatus, a controller performs first purge concentration determination control by gradually increasing a purge flow rate in increments of a predetermined amount and detect a purge concentration based on a detection value of the pressure sensor. As the first purge concentration determination control, the controller performs a control to prohibit changing of an operating state of the purge pump or changing of an open state of the purge valve until a detected concentration determination time at which a variation range of the purge concentration detected based on a detection value of a pressure sensor becomes equal to or less than a predetermined value.

Abstract: An engine system is provided with an electronic throttle device to regulate intake amount to the engine, an EGR device (EGR valve) to recirculate a part of exhaust gas of the engine to the engine as EGR gas, and an electronic control unit (ECU) to control the electronic throttle device and the EGR valve based on an operating state of the engine. The ECU performs feedback control of the electronic throttle device such that a detected engine rotation number becomes a target idle rotation number, and sets the target idle rotation number to a predetermined first set value for avoiding engine stall until a predetermined time elapses from start of deceleration and then shifts the target idle rotation number to a second set value lower than the first set value after the predetermined time elapses.

Abstract: An eccentric valve has a drive mechanism, a drive force receiving part, a bearing for supporting a rotary shaft, and a return spring for generating a return spring force. During non-operation of the drive mechanism, the eccentric valve generates a separating-direction urging force to cause the rotary shaft to incline about the bearing serving as a fulcrum and urge the valve element in a direction away from the valve seat, the separating-direction urging force being a force caused by the return spring force. Either the valve element or the valve seat is provided with a sealing member to seal between the valve element and the valve seat during non-operation of the drive mechanism.

Abstract: An engine system includes a throttle device, an EGR valve, and an ECU. The ECU diagnoses foreign-matter lodging abnormality of the EGR valve and the foreign-matter diameter based on intake pressure. When the existence of the abnormality and the foreign-matter diameter are determined, the ECU calculates a difference between a foreign-matter diameter and a predetermined learning determination value as a foreign-matter diameter difference. If this difference is larger than an abnormality determination value, the foreign-matter diameter is judged to be excessive and the throttle device is controlled to avoid engine stall. If the foreign-matter diameter difference is equal to or larger than a normality determination value and also equal to or less than the abnormality determination value, engine deceleration is continued. If the foreign-matter diameter difference is less than the normality determination value, the foreign-matter diameter is judged to be minute and the learning determination value is updated.

Abstract: When a purge control valve is in a supply state of supplying purge gas from a canister to an intake pipe and a pump is in operation, a concentration detector is configured to detect a concentration of the purge gas when the purge control valve is open in a case where a duty cycle of the purge control valve is not less than a predetermined value, and detect a concentration of the purge gas when the purge control valve is closed in a case where the duty cycle of the purge control valve is less than the predetermined value.

Abstract: An evaporated fuel processing apparatus is provided with an initializer configured to increase a step number with which a stepping motor is rotated in a valve closing direction, when there is an initialization request for the blocking valve and tank pressure of the fuel tank is in a predetermined pressure range near atmospheric pressure, in comparison with when the tank pressure is out of the predetermined pressure range.