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US 5,732,682 AGranted
Fuel amount control
AssigneeAktiebolaget Electrolux
InventorUlf Petersson
Life of this patent
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AssigneeAktiebolaget Electrolux
InventorUlf Petersson
Estimating the term…
A method and a device of controlling the amount of fuel delivered to a combustion engine (1), e.g. of two-stroke or four-stroke type, wherein the fuel is supplied through an intake passage (2) intended to deliver air (3) and fuel (4) to the cylinder (5), said intake passage being opened and closed by a piston (6) or by a special valve (7). The fuel supply to the intake passage (2) is effected upstream from the piston (6) or the valve (7) and in response to the opening and closing of the intake passage (2) varying flow speeds and pressures are produced in the passage and the fuel supply system (8) is of a kind the supply amount of which is substantially affected by this variation, such as a carburetor (9) or a low-pressure injection system (10). In order to regulate the fuel supply to the engine fuel a brief cut-off takes place in the fuel-supply system (8) of the entire fuel flow or the part flow and the brief cut-off is arranged to take place to an essential extent during a part of the engine revolution when the intake passage is closed and the fuel supply accordingly is reduced or has ceased.
A method of controlling the amount of fuel delivered to a combustion engine (1), wherein the fuel is supplied through an intake passage (2) intended to deliver air (3) and fuel (4) to one cylinder (5), said intake passage being opened and closed by a piston (6) and wherein the fuel supply to the intake passage (2) is effected upstream from the piston (6) and wherein, in response to the opening and closing of the intake passage (2), varying flow speeds and pressures are produced in the intake passage, the fuel supply system (8) being substantially affected by this variation and, in order to regulate the fuel supply to the engine, a cut-off takes place in the fuel-supply system (8) during a portion of the operating cycle by a shut-off valve (24;
A device to control the amount of fuel supplied to an engine (1), wherein the fuel is delivered through an intake passage (2) intended to deliver air (3) and fuel (4) to one cylinder (5), said intake passage being opened and closed by a piston (6) and wherein the fuel supply to the intake passage (2) is effected upstream from the piston (6) and wherein, in response to opening and closing of the intake passage (2), varying flow speeds and pressures are produced in the intake passage, the fuel supply system (8) being operable to supply different amounts of fuel in response to the flow speeds and pressures in said intake passage and includes a shut-off valve (24;
Dependencies are inferred from the claim text.