A METHOD FOR MEASURING FUEL ECONOMY IN VEHICLES EQUIPPED WITH FEED PUMP CONTROL.

摘要

ABSTRACT A method for measuring the fuel-economy of vehicles; the method comprises: disconnecting existing fuel tank and replacing it by a smaller auxiliary fuel tank on vehicle™s cargo/cabin area; replacing the pressure control valve of existing fuel injection system by a fuel distributor block and metering the fuel quantity at feed pump itself; extending the fuel lines and wiring harness of said disconnected fuel tank to said auxiliary tank; pumping fuel from said auxiliary tank based on fuel demand from the engine; completely filling said auxiliary tank to its brim before and after measurement and slightly tilting it to remove air bubbles trapped during fuel filling; accurately controlling the fuel quantity pumped by fuel pump using EMS of ECU; arranging the auxiliary tank with minimal increase in fuel line length having no kink or curls therein; and routing the wiring harness and the fuel line without any protrusion outside the vehicle. FIGURE 2.