No matter what kind of motorcycle, loosen the electric starting switch after starting, the starting motor (motor) will stop rotating, the starting motor can not rotate for a long time, otherwise it will burn out. The starting motor is separated from the crankshaft when it is not working, and pushes the driving gear to the passive gear of the crankshaft through a force (centrifugal force, magnetic force, spring, shifting fork, different transmission mechanisms have different engagement modes) when it is working. At the end of the start that force disappears, the drive gear falls back into place,
1, in addition, the design has the overrunning clutch, even if you continue to follow the start button, the start motor will not follow the engine will not follow. That is, when the flywheel line speed is greater than (beyond) the starting motor gear line speed, (because, after the engine starts, the flywheel line speed must be higher than the starting motor gear line speed), the clutch is separated, somewhat similar to the principle of ratchet (bicycle sprocket).
2. The control process during startup is as follows: when starting the vehicle, turn on the switch lock, press the start button and brake switch, and the current of the battery starts from the positive electrode and flows through the switch lock, brake switch, start button and relay to the ground to form a loop. When the current passes through the relay coil, the iron core generates a magnetic force, and draws the moving contact, so that the normally open contact of the relay is closed, the main circuit is connected, the starting motor is energized, and the operation begins. The motor rotor drives the engine crankshaft through the connecting device - one-way overrunning clutch, causing the engine to start. When the start button is released, the coil of the relay is powered off, the magnetic field in the relay disappears, the moving contact is released, the main loop is powered off, and the starting motor stops running.
3, the motor drives the flywheel tooth rotation, the flywheel drives the gasoline engine crankshaft rotation, the crankshaft drives the connecting rod, the connecting rod drives the piston in the engine cylinder reciprocating movement. The piston compreses the air in the cylinder, and the mixture of atomized gasoline provided by the carburetor, and compreses it to the end, and the spark plug of the cylinder head ignites, and the cylinder gas burns to produce pressure to push the piston back, and the piston drives a series of parts to move, and the movement is repeated by the inertia of the flywheel. So the flywheel turns, turning the gearbox gears.
4, the motorcycle electric starting system is mainly composed of starting relay, starting motor, battery, starting button and ignition system (pointing wire coil, trigger block, high voltage wire connector, spark plug, etc.).
5, start the motor, also known as the start motor. It is a special DC motor with small volume and large power. The starting motor is mainly composed of stator, rotor, frame and so on. Its working principle, when the motor through the power supply current, the motor stator armature winding generates a rotating magnetic field. When there is relative motion between the rotating magnetic field and the stationary rotor, the magnetic field line of the rotating magnetic field will cut the rotor conductor, and the rotor conductor will generate an induced current. This current interacts with the rotating magnetic field to produce an electromagnetic force, and forms an electromagnetic torque on the rotating shaft to make the rotor rotate, and the rotor drives the engine crankshaft to rotate through the driving device to make the car start.
6, the starting relay (refers to the electromagnetic relay) is composed of iron core, coil, armature, spring, reed, contact and so on. The coil is wound on the iron core, both ends are connected with the battery and switch K, and the spring pulls the armature, which can make the reed and contact 1 closed and connected, and is a normally closed contact. The spring and contact 2 are disconnected to form a normally open contact. When the switch is closed, there is current flowing through the coil, the iron core produces suction, absorbs the armature, so that the normally closed contact 1 is disconnected, the normally open contact 2 is closed, then the light bulb and the motor circuit, then the light bulb emits light, start the motor operation; When the switch K is disconnected, the coil has no current, the magnetic force of the iron core disappears, and the armature recovers under the action of the spring, and the contact 1 is closed.
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