Analysis of Blocking Fault of Supercharger

2019-09-12 16:23:19

The diesel engine runs at low speed and high load. When the diesel engine fails or the ship is full loaded, the top wind and the dirty bottom increase the external load, the speed of the diesel engine decreases. At this time, the governor automatically increases the fuel supply to make the diesel engine run at low speed and high load. The increase of fuel supply and exhaust energy will inevitably lead to the increase of turbocharger speed, compressor exhaust volume and exhaust pressure. At this time, the diesel engine has low speed and low gas consumption, which breaks the balance between supply and demand of supercharger and diesel engine. Compressor back pressure increases and flow decreases, which results in

 

When entering the low temperature sea area, the air density becomes higher because of the lower ambient temperature, the compressor intake volume increases, the energy obtained by the turbine increases, the turbocharger speed increases, the matching line moves to the lower position, and the surge margin increases; when entering the high temperature sea area, on the contrary, the surge margin decreases and the surge margin is prone to occur. For some turbocharged diesel engines without air cooler, which are matched by naval vessels in the low-temperature navigation area, or in the high-temperature navigation area, when the turbocharged diesel engine with air cooler navigates in the low-temperature sea area, because of the change of the matching relationship between them, the operating point is prone to approach the surge area and cause surge.

 

WUXI SHENGYI TURBO is a professional enterprise producing turbocharger and turbo repair partshas more than 300 turbocharger models for vehicles application as Garrett, Hitachi, Toyota, Mitsubishi, Benz, BMW, Audi, Ford, Jeep, Dongfeng .etc. Our turbochargers offer direct replacements to OEM models, also offer customized solutions to our customers. We adopt vanguard technology positively from home and abroad, and have established the long-term technical cooperation with many well-known enterprises. We have passed ISO9001:2000 in September, 2004. Now we own the floor space 5800 square meters. There are more than 50 workers including more than 10 technical staff who has the senior or intermediate title and more than 30 first-line workers who have rich experience in turbocharger. For more information please contact us [email protected]

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