Fuel System Overview

The ROUSH CleanTech liquid propane autogas fuel system is a dedicated liquid injected system and completely replaces the OEM fuel system. The conversion process involves removing the OEM fuel tank assembly, the fuel line assembly and the fuel rail assembly.  The vehicle then has the ROUSH CleanTech liquid propane autogas fuel system installed on it. An overview of the system hardware can be seen in Figure 1.  Note that each application varies somewhat; the system shown is an in-bed tank installation from the 2007.5 to 2008 Ford F-150 application.

 

Figure 1: ROUSH CleanTech Liquid Propane Autogas Fuel System

The ROUSH CleanTech liquid propane autogas fuel system consists of four major subsystems. A list of these subsystems and their key components can be found in Table 1.

Subsystem Component Comment
Fuel Rail Assembly Fuel Rails  
  Fuel Injectors See Table 2: I/O Changes
  Injection Pressure / Temperature Sensor See Table 2: I/O Changes
Fuel Line Assembly Fuel Lines  
  Flow Control Solenoid / Fuel Rail Pressure Control Module See Table 2: I/O Changes
Fuel Tank Assembly Fuel Tank  
  Fuel Pump  
  Fuel Level Sender See Table 2: I/O Changes
Powertrain Control System PCM Calibration Modified Strategy & Calibration for LPG
  Smart Relay Module (SRM)  
  Wiring Harness Overlay harness to interface with PCM

Table 1: ROUSH CleanTech Liquid Propane Autogas Fuel System & Subsystems

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