What does a solenoid do in a diesel engine?
The mechanical force in a diesel fuel shut-off solenoid is the solenoid coil, which converts electrical energy into magnetic energy that is used to modulate the valve. A diesel fuel shut-off solenoid contains an inlet pipe, which transports the diesel fuel from the fuel line to the solenoid valve.
How does diesel solenoid stop?
A Stop solenoid is used to cut the fuel supply to the engine when the ignition is switched off. Stop solenoid fits into the diesel distribution pump and can be a cause for diesel systems to fail. When the solenoid is turned on the plunger pulls the valve which allows fuel to pass through.
What causes solenoids to fail?
Solenoid coil failure can be caused by a number of factors. Applying an incorrect voltage to the coil will cause it to fail and may cause the coil to burn out. Electrical surges or spikes may also damage the coil. Sediment or other particles entering the valve may cause coil failure.
What can a faulty fuel shutoff solenoid do to a diesel engine?
So,the only 2 ways to stop a diesel engine where the solenoid is to either disconnect the fuel or block the air supply,usually, a metal plate can be placed over the air inlet to stop the engine.
What happens if the solenoid does not open?
I.e., the solenoid doesn’t open, therefore you cannot get any fuel into the engine and it will not run. Fail open. I.e., the solenoid will not close and therefore will not shut off the fuel. The engine, if running, will keep running.
Do you need to replace the solenoid on a diesel engine?
The engine, if running, will keep running. The first situation is just a pain. Replacing the solenoid is necessary to get you up and running again. The second situation only really matters on older mechanical diesel engines, such as found in tractors, dumper trucks, machinery or older vehicles.
How does a diesel fuel shut off valve work?
Unlike a regular solenoid valve, diesel fuel shut-off solenoid coils are attached to sensors that are capable of receiving and interpreting electronic signals from the machine’s main electrical system.