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1 starting system
First, the role starting system:
The engine must rely on external force to drive the crankshaft, in order to enter the normal operating state, usually automobile engine crankshaft of an external force, rotates the entire process from start to idle, the called starting the engine. Initiation of lines is supplied to the engine crankshaft sufficient starting torque, so that the engine crankshaft to achieve the necessary starting speed, the engine enters the self-operating state. When the engine is running into the free state, the task is ended immediately stop work.
conventional engine start mode, starting with a human, and the auxiliary electric starter starting gasoline started. Human start is with a hand or hove, is the simplest one, there are still some models of the Hyundai Motor will start human hand as a way to keep a backup, some models already canceled. Auxiliary gasoline engine in start-up mode using only a small number of heavy vehicles. Electric starter starting the engine through the transmission mechanism is started by the DC motor, which is simple, quick and reliable starting, repeated start ability and other advantages. Modern cars are used in this manner, referred to as the starter electric starter are mounted on the car seat hole of the front end of engine flywheel housing, bolted.
Second, the composition of the starting system:
Power line referred starter starting system, a battery, a starter and a starting control circuit, as shown 3mdash; 1 Suo shown, the starting control circuit includes a starter button or switch, starter relay and the like.
In the starter or ignition switch under the control of the start button, the battery of electrical energy into mechanical energy, by cranking the engine driven flywheel ring gear. To increase the torque, to facilitate starting the transmission ratio of the crankshaft starter: gasoline is generally 13-17, the diesel engine is typically 8-10.
Third, the classification and composition of the starter:
1. Starter composition
known as starter ldquo; rdquo ;, three major motor a DC motor, a transmission mechanism and control means, as shown in 3mdash; 2 FIG.
Function DC motor is to convert the input electrical energy of the battery into mechanical energy, electromagnetic torque.
Function
of the transmission mechanism by the driving gear is meshed into the ring gear of the engine flywheel, the DC transfer. Torque is transferred to the crankshaft, and promptly cut off the power transmission between the crankshaft and the electric motor motoring. Crankshaft prevent electromagnetic machine
control action mechanism is switched on or off the main circuit between the starter and the battery, and the drive pinion into engagement or out. Starter control means as well as some sub-switch, the ignition coil can be short-circuited at the time of starting additional resistance, in order to increase the time of starting the vehicle is no longer used.
(2) positively engaging the starter. Rely on manpower or electromagnetic force by the clutch fork goes on, forcibly driven into and out of meshing gears flywheel ring gear. Because of its simple structure, reliable operation, easy to manipulate, etc., it is widely used modern automobile.
(3) an electromagnetic starter engagement. It is assisted by the electromagnetic force of the motor internal magnetic poles attract the armature for axial movement, the drive gear engages the ring gear of the flywheel, starting after the end of the armature return spring return to allow the drive gear to exit flywheel ring gear, so called mobile armature starter. Used for high-power diesel cars.
In addition to these forms, as well as the permanent starter, reduction starter like.