Abstract: A filter device includes a cylindrical filter, a lid member, and an urging member. The filter catches foreign matter contained in gaseous fuel. The filter has a first opening located in one end and a second opening located in the other end of the filter opposite to the first opening. The filter is arranged in the drain tank with the first opening closed with a wall member such that gaseous fuel is allowed to be drawn into the filter through the inflow portion. The gaseous fuel that has passed through the filter flows out of the drain tank through the outflow portion. The lid member closes the second opening of the filter. The urging member urges the lid member toward the filter.

Abstract: A component attaching structure for attaching a first component and a second component to each other. The first component has an attachment hole and an internal thread formed therein. The second component has an external thread formed thereon. The second component supports a sealing member, which seals an interface between an outer circumferential surface of the second component and an inner circumferential surface of the attaching hole at a position closer to a tip end of the second component than the external thread. If the direction in which the second component moves relative to the first component when the second component is attached to the first component is defined as an attaching direction, a distance between the external thread and the sealing member in the attaching direction is greater than the length of the internal thread in the attaching direction.

Abstract: A filter device includes a cylindrical filter, a lid member, and an urging member. The filter catches foreign matter contained in gaseous fuel. The filter has a first opening located in one end and a second opening located in the other end of the filter opposite to the first opening. The filter is arranged in the drain tank with the first opening closed with a wall member such that gaseous fuel is allowed to be drawn into the filter through the inflow portion. The gaseous fuel that has passed through the filter flows out of the drain tank through the outflow portion. The lid member closes the second opening of the filter. The urging member urges the lid member toward the filter.

Abstract: An exhaust pressure control valve to be placed in an exhaust gas passage of a diesel engine for controlling pressure of exhaust gas to be discharged from the engine comprise: a housing formed with a main passage and a bypass passage; a main valve arranged to open and close the main passage; a bypass valve arranged to open and close the bypass passage; and an opening/closing drive device for opening and closing the bypass valve. The opening/closing drive device includes: a positive pressure actuator for opening and closing the bypass valve by pressure upstream of the main passage; and a negative pressure actuator for changing valve opening pressure of the bypass valve.

Abstract: An exhaust pressure control valve comprises a casing including a bore and a pair of first and second shaft support parts, and a valve shaft placed across the bore and rotatably supported by the shaft support parts. A first end portion of the valve shaft is arranged protruding outside the casing. A throttle valve is secured to the valve shaft inside the bore. An actuator is coupled to the first end portion to open and close the throttle valve. The second shaft support part is located in a bypass passage downstream from a bypass valve and has an opening in which a cap formed with a through hole is fitted. The inside of the second shaft support part is allowed to communicate with atmosphere through the through hole, the bypass passage, and others so that an end face of a second end portion can be subjected to atmospheric pressure.

Abstract: An intake device of an engine comprising a surge tank. The interior of the surge tank is divided into a first interior chamber and a second interior chamber by a separating wall. The separating wall has a cutaway portion into which the separating wall portion of a valve holder is inserted, and a control valve is arranged in the separating wall portion. The clearance between the separating wall portion and the wall of the cutaway portion is sealed by a band-like seal member.