Engine system with exhaust turbine supercharger
AssigneeNissan Motor Co., Ltd.
InventorKen Yamane
Life of this patent
Estimating the term…
Abstract
In an engine system including an internal combustion engine and an exhaust turbine supercharger, a valve stop mechanism is provided to stop the throttle valve of the engine in an angular position anterior to the idle position thereof when the throttle valve is suddenly moved toward the idle position in the presence of an air pressure higher than a predetermined value in the air induction passageway of the engine downstream of the compressor unit of the supercharger and upstream of the throttle valve of the engine so as to preclude production of pressure surges in exhaust turbine supercharger.
Claims4
An engine system comprising, in combination,
- an internal combustion engine including power cylinders, an air induction passageway leading to said power cylinders, a throttle valve positioned in said air induction passageway and rotatable about an axis fixed in said air induction passageway to and from an idle position providing a minimum degree of opening in said air induction passageway through said throttle valve and an exhaust discharge passageway leading from said power cylinders;
- an exhaust turbine supercharger including a compressor unit positioned in said air induction passageway and a turbine unit which is positioned in said exhaust discharge passageway for being driven by the exhaust gases discharged from said power cylinders into the exhaust discharge passageway and which is drivingly connected to said compressor unit;
- and
- a valve stop mechanism arranged in conjunction with said throttle valve and operative to stop said throttle valve in an angular position anterior to said idle position thereof when said throttle valve is turned about said axis toward said idle position thereof in the presence of an air pressure higher than a predetermined value in said air induction passageway downstream of said compressor unit and upstream of said throttle valve.
Dependencies are inferred from the claim text.