When a diesel engine is operated in a hazardous area or in an application where special precautions are justified, it is often a general requirement that the engine automatically shuts down if its speed, critical temperatures or oil pressure fall outside of predetermined limits. It is widely recognised that the best method to achieve such an emergency automatic shut down is by closure of an engine air intake shut down (shut off) valve. To comply with EN 1834-1:2000 both the engine air intake and diesel fuel supply must be shut down automatically in the event of engine overspeed. It must also be possible to operate the air shut down valve manually.
CHALWYN MECHANICAL AUTOMATIC SHUT DOWN SYSTEM SELECTION
Typical full system
Provides automatic shut down of intake air and fuel on engine overspeed, low oil pressure, high coolant temperature and high exhaust temperature. Also includes direct manual closure of air intake shut down (shut off) valve. (Click on individual parts description for PDF downloads.)
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Typical simple system
Gives automatic fuel shut off on high coolant temperature and low oil pressure. (Click on individual parts description for PDF downloads.)
| LST-200 Fuel shut off valve | AMOT 2230/4430 Coolant temperature valve |
