Carburetor for a Combustion Engine, and Method for the Controlled Delivery of Fuel
AssigneesBing Power Systems GmbH, R.E. Phelon Company, Inc.
InventorsMartin Fischer, Lars Ottosson
Life of this patent
Estimating the term…
Abstract
In order to allow fuel to be delivered in a controlled manner into a mixing chamber of a carburetor, a needle is displaced towards a needle seat between an open and a closed position in a clocked manner relative to an intake stroke of the engine such that the amount of fuel that flows into the mixing chamber via a fuel duct is controlled in accordance with the rotational speed and the engine load.
Claims18
1-17. (canceled)
A carburetor for an internal combustion engine, comprising:
- a mixing chamber formed with a filter-side inlet for air and with an engine-side outlet for a fuel-air mixture;
- a fuel duct opening into an orifice opening into said mixing chamber;
- a needle displaceably mounted between an open position and a closed position against a needle seat for controlling a delivery of fuel through said fuel duct into said mixing chamber, wherein said needle is controlled to time a displacement thereof between the open position and the closed position in dependence on a rotational speed of the engine and an engine load with reference to a respective intake stroke of the engine.
A method for the controlled delivery of fuel into a mixing chamber of a carburetor, the mixing chamber having a filter-side inlet for air and an engine-side outlet for a fuel-air mixture and a fuel duct opening into the mixing chamber at an orifice opening, the method which comprises:
- providing a needle displaceably mounted between an open position and a closed position against a needle seat;
- controlling a displacement of the needle between the open position and the closed position against the needle seat in dependence on a rotational speed of the engine and an engine load, and timed with reference to a prevailing intake stroke.
Dependencies are inferred from the claim text.