Abstract: An injector arrangement structure includes an air cleaner which is arranged at a rear side of an engine for a vehicle, a rear suspension which extends vertically at the rear side of the engine, and a first injector which is attached to the air cleaner. The air cleaner includes an outlet tube configuring a clean side of the air cleaner. The rear suspension and the outlet tube overlap each other in a side view. A partition wall dividing an intake passage vertically is provided inside the outlet tube. The first injector is attached from a lower side of the outlet tube so as to inject fuel toward the partition wall.

Abstract: An injector arrangement structure includes an air cleaner which is arranged at a rear side of an engine for a vehicle, a rear suspension which extends vertically at the rear side of the engine, and a first injector which is attached to the air cleaner. The air cleaner includes an outlet tube configuring a clean side of the air cleaner. The rear suspension and the outlet tube overlap each other in a side view. A partition wall dividing an intake passage vertically is provided inside the outlet tube. The first injector is attached from a lower side of the outlet tube so as to inject fuel toward the partition wall.

Abstract: An engine controller is proposed which facilitates an operation at start of a vehicle without forcing mental strain to a rider to cancel start control. An engine controller includes a start determinator for determining start of a vehicle, an elapsed time after start timer for counting elapsed time Tp since start of the vehicle is determined by the start determinator, and a start controller for adjusting an output of an engine until the elapsed time Tp counted by the elapsed time after start timer reaches a predetermined control time Tr determined in advance if the start of the vehicle is determined by the start determinator.

Abstract: An engine controller is proposed which facilitates an operation at start of a vehicle without forcing mental strain to a rider to cancel start control. An engine controller includes a start determinator for determining start of a vehicle, an elapsed time after start timer for counting elapsed time Tp since start of the vehicle is determined by the start determinator, and a start controller for adjusting an output of an engine until the elapsed time Tp counted by the elapsed time after start timer reaches a predetermined control time Tr determined in advance if the start of the vehicle is determined by the start determinator.

Abstract: An optical ferrule butt-connected in an optical adapter, includes: a ferrule main body; a connection end face in a front surface of the main body; a pair of grooves on the connection end face of the main body; guide pin insertion holes in bottom surfaces of the respective grooves; optical fiber insertion holes in the connection end face, the holes being arranged in a line; and foreign material collecting portions at least at a pair of corresponding sides of the connection end face. The groove has a width larger than a diameter of the guide pin insertion hole. The foreign material collecting portions respectively have a wall for connecting the connection end face with a side surface of the ferrule main body to form a space for collecting a foreign material with an opposite connection end face of a corresponding optical ferrule and an inner wall of the optical adapter.

Abstract: An optical ferrule butt-connected in an optical adapter, includes: a ferrule main body; a connection end face in a front surface of the main body; a pair of grooves on the connection end face of the main body; guide pin insertion holes in bottom surfaces of the respective grooves; optical fiber insertion holes in the connection end face, the holes being arranged in a line; and foreign material collecting portions at least at a pair of corresponding sides of the connection end face. The groove has a width larger than a diameter of the guide pin insertion hole. The foreign material collecting portions respectively have a wall for connecting the connection end face with a side surface of the ferrule main body to form a space for collecting a foreign material with an opposite connection end face of a corresponding optical ferrule and an inner wall of the optical adapter.

Abstract: An ignition timing control apparatus for an internal combustion engine of a vehicle includes a detector connected to an internal combustion engine for detecting a revolution number of the internal combustion engine and a control unit operatively connected to the detector for controlling an ignition timing period in accordance with the detected revolution number of the internal combustion engine, the control unit being connected to an ignition unit connected to the internal combustion engine.