초록 ▼

An electronic and mechanical fuel feeding system comprises a mechanical fuel induction system coupled with an electronic fuel injection system through a diverter valve in fluid communication with a mechancial pump. The diverter valve includes a valve actuator responsive to an electrical signal to co

An electronic and mechanical fuel feeding system comprises a mechanical fuel induction system coupled with an electronic fuel injection system through a diverter valve in fluid communication with a mechancial pump. The diverter valve includes a valve actuator responsive to an electrical signal to couple the inlet of the diverter valve with the outlet of the valve connected in fluid communication with electronically controlled injector nozzles. Alternatively, absence of an electrical control signal at the valve actuator causes coupling of the inlet of the diverter valve to a second outlet coupled in fluid communication with a mechanical carburetion system. In the preferred embodiment, the electronic fuel injection system comprises a control circuit responsive to changes in engine speed, manifold pressure, exhaust gas temperature and cylinder temperature so that accurately metered amounts of fuel are delivered by the injector nozzles to the engine cylinders. Since the amount of fuel supplied to the injector nozzles by a mechanical pump may exceed the amount necessary to efficiently operate the engine, a fuel return line downstream of the injector nozzles returns excess fuel to the fuel tank through a restricted orifice to prevent excess depletion of fuel at the injector nozzles.

대표청구항 ▼

A fuel injection system for internal combustion engines including in combination: (a) a fuel tank, (b) a mechanical fuel pump having an inlet and an outlet, with said inlet connected to said fuel tank, (c) a diverter valve having an inlet, a first outlet, a second outlet, said inlet of said diverter

A fuel injection system for internal combustion engines including in combination: (a) a fuel tank, (b) a mechanical fuel pump having an inlet and an outlet, with said inlet connected to said fuel tank, (c) a diverter valve having an inlet, a first outlet, a second outlet, said inlet of said diverter valve being connected to said outlet of said mechanical fuel pump, said diverter valve being movable between a first position in which said diverter inlet is fluidly connected to said first outlet and a second position in which said diverter inlet is fluidly connected to said second outlet, (d) a first fuel delivery system comprising electrically powered electronic fuel injection means for injecting metered amounts of fuel into each cylinder of said internal combustion engine, inlcuding at least one injector nozzle connected to said first outlet of said diverter valve, (e) a second fuel delivery system comprising carburation means for mechanically metering the introduction of fuel to the cylinders of said internal combustion engine connected to said second outlet of said diverter valve, (f) means responsive to an electric signal for moving said diverter valve to said first position, and (g) means responsive to the absence of electrical power for automatically moving said diverter valve from first and to said second position.