Xantia 1.9 TD 1995 92000m NB. The excess fuel, called spill fuel or return fuel, cools the injectors and is returned to the fuel tank to diffuse the heat. As the fuel travels through the injectors, small amounts of fuel are injected into the combustion chamber. Latest. Step 1 Most car engines use port injection or a carburetor. December 4, 2008 . Air can get into the fuel system after a fuel filter change or if the vehicle runs out of diesel. Diesel injector fuel lines carry fuel from the lift pump and deliver it to the injector supply lines or the fuel gallery.
Step 1 The pump often has a hand primer lever for bleeding air from the system. 1, the following operations occur in the evaporative emission control system: Fact #5: Air, once freed from fuel, will not go back into solution. Fuel system components involved in the refueling process include the fuel tank, filler pipe, filler cap, vapor control valve, liquid-vapor discriminator (LVD) valve, and the carbon canister [27, 28].During vehicle refueling, which is monitored during the integrated refueling test as outlined in Fig.
This pump, driven by the engine, supplies fuel automatically to the diesel injection system. Cracking open the fuel lines at the injectors is the final step required to bleed air out of a diesel's fuel system.
Additionally, the AirDog® maintains the necessary net positive pressure to the engine fuel pump to prevent cavitation and the formation of vapor. One big difference between a diesel engine and a gas engine is in the injection process. DISTINGUISHING AIR FROM VAPOR BUBBLES IN A DIESEL FUEL SYSTEM Figure 1 Figure 2 There are two kinds of bubbles that may be visible at the fuel pump inlet of a diesel fuel system. Regardless of the type of fuel injection system your engine has, it will never perform at the designed efficiency with air and vapor entrained in the fuel. After that its fine. Simple fuel systems use gravity or air pressure to get fuel from the tank to the injection pump. The bubbles can be characterized as either air bubbles or vapor bubbles. Air leak in fuel system [Diesel]. These bubbles can be too small to view with the naked eye but become trapped in solution. FASS, Fuel Air Separation Systems, are a combination diesel lift pump and fuel filtration system which removes all types of fuel contaminants improving engine performance and extending the life of your diesel injection system.
The AirDog® FPII 4G Fuel Air Separation System is the state of the art fuel processor that removes, not only water and particulate contaminates from the fuel flow to the engine, but most importantly, it removes the entrained air and vapor.