Industrial Small Engine Control

The design is comprised of a MC33814 engine control analog power IC, a USB to SPI dongle interface, and power conditioning circuitry. It drives the engine electrically or fueled through relays. It also drives the fuel injector that runs the equipment during fueled operation. All 5V VCC power required by the circuit is obtained from the MC33814 built-in power regulator. A 12V VBAT supply provides the power to the three internal voltage regulators. A PC communicates to this project through a USB/SPI dongle (KITUSBSPIDGLEVME) connected to the PC's USB port. The Freescale SPIGen program provides the user interface to the MC33814 SPI port and allows the user to send commands to the IC and receive status from the IC.

This project is designed to drive several industrial engine functions, a set of screw terminals are designated for control outputs: tachometer output, lamp output, water heater output, two relay outputs, two injector outputs, and two ignition outputs. This kind of control system is very useful in machineries that are usually used in industrial plants for the convenience of the plant operators.