Automotive diesel exhaust HC dosing valve
First Claim
1. A dosing valve assembly for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine, comprising:
- a control valve coupled to a source of the reducing agent;
a reducing agent delivery valve constructed and arranged for coupling to the exhaust manifold to enable a specified quantity of reducing agent to be administered into the exhaust stream, the reducing agent delivery valve including an inlet communicating with an elongated conduit disposed between the control valve and reducing agent delivery valve for fluidly communicating reducing agent from the control valve to the reducing agent delivery valve, whereby, the reducing agent delivery valve may coupled to the exhaust manifold and the control valve displaced from the reducing agent delivery valve.
1 Assignment
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Accused Products
Abstract
A dosing valve assembly is disclosed for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve assembly comprises a control valve coupled to a source of the reducing agent, a reducing agent delivery valve constructed and arranged for coupling to the exhaust manifold to enable a specified quantity of reducing agent to be administered into the exhaust stream, and an elongated conduit disposed between the control valve and reducing agent delivery valve for fluidly communicating reducing agent from the control valve to the reducing agent delivery valve. The disclosed arrangement enables the reducing agent delivery valve to be coupled to the exhaust manifold and the control valve to be displaced from the reducing agent delivery valve and away from the high temperature environment associated with the exhaust manifold.
33 Citations
20 Claims
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1. A dosing valve assembly for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine, comprising:
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a control valve coupled to a source of the reducing agent;
a reducing agent delivery valve constructed and arranged for coupling to the exhaust manifold to enable a specified quantity of reducing agent to be administered into the exhaust stream, the reducing agent delivery valve including an inlet communicating with an elongated conduit disposed between the control valve and reducing agent delivery valve for fluidly communicating reducing agent from the control valve to the reducing agent delivery valve, whereby, the reducing agent delivery valve may coupled to the exhaust manifold and the control valve displaced from the reducing agent delivery valve. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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9. A dosing valve assembly for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine, comprising:
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an electronic fuel injector coupled to a source of the reducing agent;
a poppet valve constructed and arranged for coupling to the exhaust manifold to enable a specified quantity of reducing agent to be administered into the exhaust stream, the poppet valve including an inlet communicating with an elongated conduit disposed between the electronic fuel injector and poppet valve for fluidly communicating reducing agent from the electronic fuel injector to the poppet valve, whereby, the poppet valve may coupled to the exhaust manifold and the electronic fuel injector displaced from the poppet valve. - View Dependent Claims (10, 11, 12, 13)
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14. A dosing valve assembly for administering a dose of diesel fuel as a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine, comprising:
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a control valve coupled to a source of diesel fuel;
a reducing agent delivery valve constructed and arranged for coupling to the exhaust manifold to enable a specified quantity of diesel fuel to be administered into the exhaust stream, the delivery valve including an inlet communicating with an elongated conduit disposed between the control valve and delivery valve for fluidly communicating diesel fuel from the control valve to the delivery valve, whereby, the delivery valve may coupled to the exhaust manifold and the control valve displaced from the delivery valve. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification