Electric control module solenoid pump

A solenoid fuel pump, including:

• an inlet port, an outlet port, and a first through-bore connecting the inlet and outlet ports;
• a plunger disposed within the first through-bore and including a second through-bore;
• a spring arranged to urge the plunger toward the outlet port;
• a solenoid coil disposed about a portion of the plunger and arranged to displace the plunger toward the inlet port in response to direct current coil power applied to the solenoid coil;
• and,
• a control unit including:
• a power header electrically connected to the solenoid coil;
• a first transistor electrically connected to the solenoid coil;
• a programmable microcontroller electrically connected to the first transistor;
• a second transistor connected in series between the microcontroller and the power header;
• and,
• signal source arranged external to the control unit and the solenoid fuel pump and electrically connected to the second transistor;
• wherein the second transistor communicates with the signal source to energize and de-energize the solenoid coil.

A control unit for a solenoid fuel pump, the solenoid fuel pump including:

• an inlet port, an outlet port, and a first through-bore connecting the inlet and outlet ports;
• a plunger disposed within the first through-bore and including a second through-bore;
• a spring arranged to urge the plunger toward the outlet port;
• a solenoid coil disposed about a portion of the plunger and arranged to displace the plunger toward the inlet port in response to direct current coil power applied to the solenoid coil, the control unit comprising:
• a power header electrically connected to the solenoid coil;
• a first transistor electrically connected to the solenoid coil;
• a microcontroller electrically connected to the first transistor;
• a second transistor electrically arranged between the microcontroller and the power header;
• and,
• an signal source arranged external to the control unit and the solenoid fuel pump and electrically connected to the second transistor;
• wherein:
• the signal source communicates with the second transistor to energize and de-energize the solenoid coil;
• and,
• in case of a failure of the signal source, the microcontroller communicates with the first transistor to energize and de-energize the solenoid coil.