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2 results about "Port fuel injection" patented technology
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Fuel system with direct and high pressure port fuel injection with thermal management
PCT designated stageWO2026117577A1Electrical controlFuel injection apparatusCombustion chamberHeat management
A fuel system for delivering liquid fuel to a combustion chamber of an internal combustion engine includes a port fuel injector in an air intake communicating with the combustion chamber, a first fuel rail containing pressurized liquid fuel in communication with the port fuel injector, a direct fuel injector arranged to inject fuel directly into the combustion chamber, second fuel rail containing pressurized liquid fuel in communication with the direct injector, a high-pressure fuel pump having a high-pressure outlet in communication with the second fuel rail, a regulator valve in communication with the high-pressure outlet and the first fuel rail, the regulator valve controllable to reduce a fuel pressure of fuel delivered to the first fuel rail relative to a fuel pressure at said high-pressure outlet; and a control system configured with computer-readable instructions executable to monitor fuel pressure in the first fuel rail, and control the regulator valve to deliver fuel to the first fuel rail to maintain a predetermined quantity of fuel at said predetermined pressure in the first fuel rail.
Owner:STANADYNE OPERATING CO LLC
Fuel system with direct and high pressure port fuel injection with thermal management
A fuel system for delivering liquid fuel to a combustion chamber of an internal combustion engine includes a port fuel injector in an air intake communicating with the combustion chamber, a first fuel rail containing pressurized liquid fuel in communication with the port fuel injector, a direct fuel injector arranged to inject fuel directly into the combustion chamber, second fuel rail containing pressurized liquid fuel in communication with the direct injector, a high-pressure fuel pump having a high-pressure outlet in communication with the second fuel rail, a regulator valve in communication with the high-pressure outlet and the first fuel rail, the regulator valve controllable to reduce a fuel pressure of fuel delivered to the first fuel rail relative to a fuel pressure at said high-pressure outlet; and a control system configured with computer-readable instructions executable to monitor fuel pressure in the first fuel rail, and control the regulator valve to deliver fuel to the first fuel rail to maintain a predetermined quantity of fuel at said predetermined pressure in the first fuel rail.
Owner:STANADYNE OPERATING CO LLC