Abstract: An electric oil pump includes a rotor driven to rotate by a motor and a pump body having a pump chamber accommodating the rotor, an intake port for introducing oil into the pump chamber according to rotation of the rotor, a discharge port for discharging oil from the pump chamber according to rotation of the rotor, a first discharge passage communicated to a first communication hole provided in the discharge port and circulating oil discharged from the discharge port, the first discharge passage having a smaller cross sectional area than the discharge port, and a second discharge passage communicated to a second communication hole provided in the discharge port separately from the first communication hole and circulating oil discharged from the discharge port, the second discharge passage having a smaller cross sectional area than the discharge port.

Abstract: An operational rod coupling arrangement includes a motion member constituting part of a motion mechanism, an operational rod having a coupling hole at one end to be pivotally coupled with the motion member for transmitting an operational force and a connecting member configured to clamp the end of the operational rod in cooperation with a portion of the motion member. One of the motion member and the connecting member includes a shaft portion and the other of the motion member and the connecting member includes a bearing portion in which the shaft portion is insertable. The shaft portion, extending through the coupling hole, is insertable into the bearing portion. An engaging portion and an engaged portion for preventing withdrawal of the shaft portion from the bearing portion are at different positions than the shaft portion and the bearing portion in the connecting member and the motion member, respectively.

Abstract: An operational rod coupling arrangement includes a motion member constituting part of a motion mechanism, an operational rod having a coupling hole at one end to be pivotally coupled with the motion member for transmitting an operational force and a connecting member configured to clamp the end of the operational rod in cooperation with a portion of the motion member. One of the motion member and the connecting member includes a shaft portion and the other of the motion member and the connecting member includes a bearing portion in which the shaft portion is insertable. The shaft portion, extending through the coupling hole, is insertable into the bearing portion. An engaging portion and an engaged portion for preventing withdrawal of the shaft portion from the bearing portion are at different positions than the shaft portion and the bearing portion in the connecting member and the motion member, respectively.

Abstract: An intake system of an internal combustion engine includes: an intake manifold; a cartridge provided in the intake manifold, the cartridge having a plurality of intake channels for supplying air to respective cylinders in the internal combustion engine and valve elements configured to adjust the amounts of intake air taken into the respective cylinders; a gas supply portion configured to introduce gas discharged from the internal combustion engine into the cylinders, the gas supply portion being provided at a center position of the cartridge in the direction of row of the plurality of intake channels; and a plurality of gas distribution channels provided on the cartridge and configured to distribute from the gas supply portion to the plurality of intake channels.

Abstract: A structure of an airflow control system includes a vortex control valve located in an intake passage and generating a vortex in a combustion cylinder upon intake of air-fuel mixture for combustion, the intake passage supplying the air-fuel mixture to the combustion cylinder, and a return flow passage for returning a portion of exhaust gas generated by the combustion of the air-fuel mixture in the combustion cylinder to the intake passage, wherein a merge portion where the return flow passage merges with the intake passage is located downstream of a mounting position of the vortex control valve between the mounting position of the vortex control valve and the combustion cylinder.

Abstract: A valve timing control device comprising, a cam shaft assembled within an engine, a rotational transmitting member having a concave portion, which is mounted around the cam shaft to rotate relative thereto within a predetermined range for transmitting a rotational power from a crank pulley, vanes provided on the cam shaft, fluid chambers formed between the cam shaft and the concave portion, which are separated into advancing and delaying chambers by the vanes, a fluid supplying means for supplying fluid under pressure to a selected one of the advancing and delaying chambers, and a stopper located between a radially inner portion of a side wall of the concave portion and the vane to restrict rotate relative between the rotational transmitting member and the cam shaft.