Apparatus for atomizing fuel in an internal combustion engine
AssigneeToyota Jidosha Kogyo Kabushiki Kaisha
InventorYasuhiko Ishida
Life of this patent
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Abstract
An apparatus for improving atomization of fuel in an internal combustion engine, which apparatus has a pressure accumulation chamber connected to an intake passageway of the engine via a one-way valve and a first passageway of large flow area. The pressure accumulation chamber is also connected to the intake passageway via a second passageway of small flow area. The pressure accumulation chamber is maintained at a pressure which is close to a maximum pressure in the intake passageway. Thus, a fluid is intermittently ejected from the second passageway of small flow area into the intake passageway, thereby atomizing fuel of liquid condition therein.
Claims11
An apparatus for improving atomization of fuel in an air-fuel mixture passing through an intake line of an internal combustion engine, said apparatus comprising:
- first passageway means opened to the intake line at a first position thereof;
- second passageway means opened to the intake line at a second position thereof, the flow area of the second passageway means being substantially smaller than that of the first passageway means, and
- pressure accumulator means located between the first and second passageway means for producing a pressure in the pressure accumulator means, which pressure is close to a maximum pressure in the intake line, thereby generating an intermittent flow of air-fuel mixture ejected to the intake passageway via the second passageway means, said apparatus forming a closed loop between said first and second positions with no openings to or from atmosphere.
An intake system for an internal combustion engine, comprising:
- a carburetor having at least one throttle valve;
- an intake manifold arranged downstream of the carburetor for introducing an air-fuel mixture from the carburetor into the engine;
- a first passageway means connected to the intake manifold for diverting a part of the air-fuel mixture from the intake manifold into the first passageway means;
- an accumulator chamber of a predetermined volume;
- reed valve means located between the accumulator chamber and the first passageway means for allowing the diverted air-fuel mixture to pass into the accumulator chamber, and;
- a second passageway means for connecting the accumulator chamber with the intake manifold, the flow area of the second passageway means being smaller than that of the first passageway means, whereby the chamber is maintained under a pressure near a maximum pressure in the intake manifold, causing an intermittent flow of diverted air-fuel mixture to be generated, which intermittent flow is ejected into the intake manifold from the second passageway means.
Dependencies are inferred from the claim text.