Intake device for internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorTadahiro Yamamoto
Life of this patent
Estimating the term…
Abstract
An intake device for an internal combustion engine comprises an outwardly extending flange attached to a throttle barrel and a saucer-like member attached to the flange to form a ring-shaped intake passage therebetween. An air flow meter duct is arranged with the outlet disposed at the portion of the ring-shaped intake passage having the smallest cross-sectional area. The air flow velocity within the duct is equal to the velocity at this smallest cross-sectional area section, thus permitting measurement thereof by measuring the flow through the meter and scaling appropriately by the ratio of meter flow passage to intake passage cross-sectional areas.
Claims6
An intake device for an internal combustion engine, comprising:
- a throttle barrel having a throttle valve located therein;
- an outwardly extending flange disposed upstream of said throttle valve at the inlet end of said throttle barrel;
- an air cleaner assembly mounted on said flange;
- a saucer-like member cooperating in spaced relationship with said flange to define a ring-shaped intake passage within said air cleaner assembly through which air is inducted into the inlet end of said throttle barrel;
- and
- a single air flow meter assembly mounted between said flange and said saucer-like member and including (a) a single duct through which a fraction of the air inducted into said throttle barrel flows, said duct having a single inlet and a single outlet and disposed in said ring-shaped intake passage and having said single outlet located in a portion of said ring-shaped intake passage adjacent to said throttle barrel and (b) a Karman eddy type sensor disposed within said single duct.
In an internal combustion engine having an induction conduit, an intake assembly comprising
- an air cleaner assembly;
- an annular air-flow space defining means disposed within said air cleaner assembly and at the upstream end of said induction conduit for causing air to flow radially inward toward the longitudinal axis of said induction conduit;
- a single duct through which a fraction of the air inducted into said induction conduit flows, and which is disposed in said annular air flow space defining means so as to divide said annular air-flow space into a small portion defined within said duct and a larger portion defined outside said duct, said small portion being oriented radially with respect to said longitudinal axis, said duct having a single inlet and a single outlet, said outlet being disposed adjacent the upstream end of said induction conduit;
- and
- Karman eddy type air flow sensor means disposed within said duct.
Dependencies are inferred from the claim text.