To learn the differences among the engine starters, firstly we need to learn how we can start an engine from a state of rest.
You need to start crankshaft of the engine at first, then the piston reciprocates. After that, the combustible mixture work in the cylinders pushes the piston downward to turn the crankshaft. At last, the diesel engine is able to run the working cycles automatically.
Several necessary conditions for starting a diesel engine
3. Sufficient energy to drive cylinder compressed.
Diesel and air are both fuels. The only way to ignite them is to turn the crankshaft to a certain speed.
The device used to turn the crankshaft is starter, which turns the flywheel first, and then flywheel turns the crankshaft.
Several types of starters
Hand starter is the oldest way to start an engine, and it only needs manpower to crank the shaft to the rated speed. If the operation for the starter is inappropriate, people always get injured. Some small agricultural machines are still using hand starter.
The electric starter is also called electric motor which can convert electricity into mechanical power, driving flywheels. It is the most popular and cheapest method to start an engine, and it is even available for remote control. The complete electric starter system includes starter motor, battery, cable, charger, and etc. You can find an electric starter almost everywhere, such as an electric starter for the car.
An air starter is also called a pneumatic motor, it can convert the pressure energy which compressed by air into mechanical energy. To start a diesel engine, it needs to use external force to turn the crankshaft first. Then the motor reciprocating, pneumatic power drives piston motor and gear motor. The complete air starter system includes air starter, pipe, gasholder, air compressor etc. The complete system of air starter is relatively expensive.
The hydraulic starter is also called a hydraulic start motor, which can convert hydraulic energy into mechanical energy. A complete hydraulic starter includes a fuel tank, hydraulic starter, manual charging device, filter, manometer, accumulator and control valve. The complete system is also expensive, and it often applies to special working conditions.
Compressed Air Starter
According to the ignition sequence of the diesel engine, a compressed air starter pushed the compressed air into the cylinder during the expansion stroke. And the piston will work with the driving force by compressed air, so that the diesel engine reaches the starting speed and start to work automatically. The complete system has more power than other systems, and it is reliable. You can also use the compressed air for braking, but it is more complicated and heavier than any other starting system. So it is not applicable for small engines.
Spring starter is a new product for an indirect hand starter, which has been improved. It is also called a mechanical spring starter. It uses a friendly design comparing to the old hand crank starter. You only need to fit and rotate the handle to compress the disc-springs, and the springs will store the energy. After you pull the trip, the system will release the spring’s potential energy to turn the flywheel of the engine. Mechanical spring starter can make sure that the engine can start well even there is out of electricity or other power resources.
As you can see, the spring starter is the best way to start an engine if it is an emergency. I know you are searching for it now, actually you can click Cqstart spring starter to get more info.