WEICHAI & PSI SERVICE MANUALS AVAILABLE ONLINE AT FLYPARTSGUY.COM Figure 2 Direct Acting Electronic Pressure Regulator - It is a continuous fuel flow device. This allows the most homogeneous mixture of air and fuel to the engine yielding optimum combustion with minimum emissions and maximum fuel economy. - It operates on low pressure fuel from 6 to 20 inches of water of inlet pressure, no pressure intensification system required. - It does not wear in the case or dry fuels (NG) and it does not stick or clog due to heavy hydrocarbons or waxes found in LPG. - It is fast and accurate, providing precise air/flow ratio control during transients (or load acceptance).
The DEPR is a single-stage microprocessor based electromechanical fuel pressure regulator that incorporates a high speed actuator. It communicates with the Engine Control Module (ECM) over a Controller Area Network (CAN) link, receiving fuel pressure commands and broadcasting DEPR operating parameters back to the ECM. The DEPR can regulate fuel pressure between +/- 17 inches of water column above the Mixer air inlet pressure, providing sufficient control authority to stall an engine either rich or lean.
When the DEPR receives an output pressure command from the ECM, the valve is internally driven to attain targeted fuel pressure, the DEPR then closes the loop internally using a built in fuel pressure sensor to maintain target fuel pressure/fuel flow rate, until another external command from the ECM is received. WEICHAI EMISSION-RELATED INSTALLATION INSTRUCTIONS GET YOUR WEICHAI & AFTERMARKET SERVICE PARTS AT FLYPARTSGUY.COM