Waste gate assembly
AssigneeCummins Inc.
InventorsNikhil B. Patil, Ligong Yang
Life of this patent
Estimating the term…
Abstract
A waste gate assembly includes a waste gate conduit configured to receive exhaust gas. The waste gate conduit includes a first portion having a first inner diameter and a second portion having a second inner diameter and fluidly coupled to the upstream portion. The first inner diameter is less than the second inner diameter. Additionally, the waste gate assembly includes a waste gate valve operably coupled to the waste gate conduit and configured to move between an open position to permit a flow of the exhaust gas and a closed position to inhibit the flow of the exhaust gas.
Claims21
A waste gate assembly configured to be fluidly coupled to a turbocharger having a compressor and a turbine, comprising:
- a waste gate conduit configured to receive exhaust gas in response to a speed of at least one of the compressor and turbine of the turbocharger, the waste gate conduit including a first portion having a first inner diameter and a second portion having an inner surface and a second inner diameter defining the inner surface, and the second portion is fluidly coupled to the first portion, and the first inner diameter is different from the second inner diameter and the first inner diameter is 40-75% of the second inner diameter;
- and
- a waste gate valve operably coupled to the waste gate conduit and configured to move between an open position to permit a flow of the exhaust gas and a closed position to inhibit the flow of the exhaust gas.
An assembly for use with an engine comprising:
- an exhaust manifold fluidly coupled to the engine;
- and
- a waste gate assembly fluidly coupled to the exhaust manifold and to a turbocharger having a compressor and a turbine, the waste gate assembly configured to receive at least a portion of exhaust gas from the exhaust manifold in response to a speed of at least one of the compressor and turbine of the turbocharger, the waste gate assembly including a waste gate valve and a waste gate conduit defined by a first conduit portion and a second conduit portion, and the first conduit portion has a diameter that is different from a diameter of the second conduit portion, wherein the diameter of the second conduit portion defines a maximum diameter of the waste gate conduit, and the length of the waste gate valve is at least equal to the diameter of the second portion.
A method, comprising:
- operating an engine;
- directing exhaust gas from the engine to a waste gate assembly, the waste gate assembly configured to be fluidly coupled to a turbocharger having a compressor and a turbine;
- routing the exhaust gas through a first conduit of the waste gate assembly, the first conduit having a first inner surface;
- opening a waste gate valve downstream of the first conduit;
- in response to opening the waste gate valve, directing the exhaust gas from the first conduit to a second conduit of the waste gate assembly, the second conduit having a second inner surface defined by a larger diameter than a diameter of the first inner surface of the first conduit;
- moving the waste gate valve to a position substantially parallel with the flow of exhaust gas when in a fully open position;
- and
- closing the waste gate assembly when the waste gate valve contacts the second inner surface.
Dependencies are inferred from the claim text.