How pneumatic starters work

When the engine starting sequence is initiated a rush of compressed air is released. This strikes the primary turbine wheel and causes it to rotate at high speed. As the air exits the first wheel it strikes each subsequent wheel causing each to turn. Eventually the wheels reach speeds of between 25 to 40 thousand rpm. This velocity is reduced by about 10:1 inside a planetary gearbox sitting just in front of the turbine mechanism.

Pneumatic Starter for Diesel Engine

AST600 Air Starter is a device for starting diesel engine, use the compressed air as power source. It has the merits of fire protection, explosion protection, small volume, large power, overload protection and safety and reliability in serious working condition. Especially, pre-engagement starter method which the output gear first extrude then rotate is realized to avoid to damage the gear circle of flying wheel of diesel engine. This product is our patented product, Used for NTA855, KTA19, 8135, 12V135, 8150, 6160, 4170, 6170, 8170, 4190, 6190, and 8190 diesel engine.

1.Product Category:

2.Working Principle

AST600 Air Starter is comprise of power part and output part. The power part is vane pneumatic motor. When starting the diesel engine, the compressed air enter from pre-engagement air inlet hole of output part and push the output part and push the output gear to extrude forward, adjust automatically to ensure the correct engaging position. When the output gear reaches specified stroke, the compressed air is connected with air relay through pre-engagement air outlet hale. At this time, open main air circuit, the compressed air enter vane pneumatic motor part, and the motor starts to rotate which drive the diesel engine. After start-up o of diesel engine the said motor will overstep by overstep clutch. If the air source is cut off the output gear will draw back, the whole start-up process is completed.

3.Technical Characteristic

This product is used under the working air pressure no more than 0.8MPa. maximum power 17KW. The main technical parameters at different air pressure are as below: