Electronic starter is the motor that people usually refer to now, also known as starter. It rotates the starter rotor through the force of the energized coil in the magnetic field to drive the starter rotor to rotate, and the pinion on the rotor drives the engine flywheel to rotate, thereby driving the crankshaft to rotate and entering the vehicle.
The starter can convert the electric energy of the battery into mechanical energy, and drive the engine flywheel to realize the starting of the engine. Before the engine can run on its own power, it must be rotated by external force. The process of the engine’s transition from standstill to being able to run on its own with the help of external forces is called engine starting.
As we all know, the start of the engine requires the support of external forces, and the car starter plays this role. Generally speaking, the starter uses three components to achieve the entire starting process. The DC motor introduces current from the battery and causes the drive gear of the starter to move mechanically; the transmission mechanism meshes the drive gear into the flywheel ring gear and can automatically disengage after the engine starts; the on and off of the starter circuit is controlled by an electromagnetic switch To control.
Among them, the electric motor is the main component inside the starter.
This part consists of an internal ring gear and a matching gear or rotor. The inner ring gear is fixedly connected with the housing, and the oil entering from the oil port pushes the rotor to revolve around a center point. This slowly rotating rotor is driven by a spline shaft into a cycloidal hydraulic motor. After the advent of this original cycloidal motor, after decades of evolution, another concept of motor began to take shape. This motor has rollers installed in the built-in ring gear. The motor with rollers can provide higher starting and running torque. The rollers reduce friction and thus improve efficiency. Can produce stable output. By changing the direction of the input and output flow, the motor is quickly reversed, and equivalent torque is generated in both directions. Each series of motor has a choice of various displacements to meet various speed and torque requirements.
Hydraulic motor: conventionally refers to an energy conversion device that outputs rotary motion and converts hydraulic energy provided by a hydraulic pump into mechanical energy.
High-speed motor: The gear motor has the advantages of small size, light weight, simple structure, good processability, insensitivity to oil pollution, shock resistance and small inertia. Disadvantages include large torque ripple, low efficiency, small starting torque (only 60%-70% of rated torque) and poor low-speed stability.
Vane motor: It is a hydraulic motor in which the blades in the rotor slot are in contact with the casing (stator ring) and rotate the rotor under the action of the inflowing liquid. Compared with other types of motors, vane motors have the advantages of compact structure, small profile size, low noise, and long life.The inertia is smaller than that of plunger motors, but the pollution resistance is worse than that of gear motors. Work below 200r / min. Because the vane motor has a large leakage, it is unstable at load changes or at low speeds.
Radial plunger motor: It has good reverse characteristics, making the motor operation absolutely quiet, suitable for servo systems. Can work as a motor or pump in both directions.
Axial plunger motor: It is a shaft distribution type cycloid hydraulic motor with rolling bearing support. It adopts the overall structural design of the output shaft and the distribution mechanism, a toothed stator, a roller bearing support at both ends, and a special inlet revolving seal ring. The motor allows operation at higher back pressures.
Low-speed hydraulic motor: simple structure, reliable work, many varieties and specifications, low price. Its disadvantages are large volume and weight, and large torque ripple.
Cycloidal motor: a small, low-speed, high-torque hydraulic motor with an internal meshing cycloidal gear. Its simple structure, good low-speed performance and strong short-term overload capacity. There is a stator and a movable blade inside the cycloidal motor. The stator, blade and transmission shaft divide the motor into two cavities. Each cavity has an oil port. When one oil port enters the other, the other one outputs oil. swing.
Piston air motor: It is composed of connecting rod, crankshaft, piston, cylinder, airframe, and valve. The compressed air passes through the valve to supply air to each cylinder in order to expand and do work, and pushes the crankshaft to rotate through the connecting rod. Its work mainly comes from the work of gas expansion