Engine Control Unit

ECU Functionality

The Westport industrial engine control unit (ECU) is a microprocessor-based controller utilizing a Hitachi 32 Bit, 80MHz processor with 1-MB flash memory and 48kB SRAM. The ECU uses an external diagnostic CAN line with USB connection. Engine fueling is controlled using a speed-density algorithm (engine speed/manifold absolute pressure and temperature). The ECU supports fault diagnostics and provides such features as malfunction indication, limp-home capability and safety shutdowns. The Westport ECU is designed to control four cylinders and provide optimized engine performance, operability and safety over the full speed and torque range.

The following diagram is a summary of the ECU inputs, outputs and communication channels:

 


 

 

Last modified on Tuesday, 13 May 2014 01:57