Delayed Engine Shutdown System. Doosan G33P-5 Plus

Delayed Engine Shutdown System

Operation

The delayed engine shutdown system will shut the engine down if no proper action is taken by the operator. This system makes use of the engine oil pressure switch, transmission oil temperature switch and water (coolant) temperature sensor to get the required truck condition.

If an engine damaging condition arises, such as too much oil pressure drop, this system will alert the operator by warning MIL Lamp.

If the operator ignores this warning and does not shutdown the engine within thirty seconds, this delayed engine shutdown system will interrupt the fuel supply to the engine, thereby saving the engine from the critical damage.

1. Low engine oil pressure

The warning MIL lamp will turn on when the oil pressure drops to approximately 28KPa (4 psi) and the delayed engine shutdown system will interrupt the fuel supply to the engine after thirty seconds.

2. Hot engine coolant

The warning MIL lamp will turn on when the coolant temperature reaches approximately 115 ℃ (239 ℉ ) and the delayed engine shutdown system will interrupt the fuel supply to the engine after thirty seconds.

3. Hot transmission oil

The warning MIL lamp will turn on when the transmission oil temperature reaches approximately

125 ℃ (257 ℉ ) and the delayed engine shutdown system will interrupt the fuel supply to the engine after thirty seconds.

Vehicle System 36 System Operation

Diagram of Delayed Engine Shutdown System

G420F(E) / G424F(E) ENGINE – LP TRUCK

Vehicle System

G420F(E) / G424F(E) ENGINE – GAS & DF TRUCK

37 System Operation