Turbo Purge Module For Turbocharged Vehicle
First Claim
1. An evaporative emission management system for a vehicle comprising:
- a vapor collection canister constructed and arranged to be connected with a fuel tank to receive hydrocarbon vapors from the fuel tank,an intake manifold for drawing air into an internal combustion engine of the vehicle,a turbocharger connected with the intake manifold to provide pressurized air to the engine, anda single, integral turbo purge module comprising;
a purge valve having an inlet connected to the canister and an outlet connected to the intake manifold,a venturi nozzle constructed and arranged to receive pressurized air from the turbocharger, when the turbocharger is operating, to create a vacuum to draw vapors from the canister through the purge valve to an inlet of the turbocharger and the intake manifold to be purged in the engine,a first check valve to prevent pressure from the intake manifold from reaching the canister when the turbocharger is operating, anda second check valve to prevent vacuum pressure from the intake manifold from communicating with the venturi nozzle when the turbocharger is at idle, with vapor from the canister being drawn through the purge valve and the intake manifold to be purged in the engine.
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Accused Products
Abstract
A turbo purge module includes a purge valve connected between a vapor collection canister and an intake manifold. A venturi nozzle receives pressurized air from the turbocharger, when the turbocharger is operating, to create a vacuum to draw vapors from the canister through the purge valve to an inlet of the turbocharger and the intake manifold to be purged in the engine. A first check valve prevents pressure from the intake manifold from reaching the canister when the turbocharger is operating. A second check valve prevents vacuum pressure from the intake manifold from communicating with the venturi nozzle when the turbocharger is at idle, with vapor from the canister being drawn through the purge valve and the intake manifold to be purged in the engine. The purge valve, venturi nozzle, first check valve, and second check valve are integrated into a single component.
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Citations
10 Claims
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1. An evaporative emission management system for a vehicle comprising:
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a vapor collection canister constructed and arranged to be connected with a fuel tank to receive hydrocarbon vapors from the fuel tank, an intake manifold for drawing air into an internal combustion engine of the vehicle, a turbocharger connected with the intake manifold to provide pressurized air to the engine, and a single, integral turbo purge module comprising; a purge valve having an inlet connected to the canister and an outlet connected to the intake manifold, a venturi nozzle constructed and arranged to receive pressurized air from the turbocharger, when the turbocharger is operating, to create a vacuum to draw vapors from the canister through the purge valve to an inlet of the turbocharger and the intake manifold to be purged in the engine, a first check valve to prevent pressure from the intake manifold from reaching the canister when the turbocharger is operating, and a second check valve to prevent vacuum pressure from the intake manifold from communicating with the venturi nozzle when the turbocharger is at idle, with vapor from the canister being drawn through the purge valve and the intake manifold to be purged in the engine. - View Dependent Claims (2, 3, 4)
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5. A turbo purge module for an emission management system of a turbocharged vehicle, the vehicle having a vapor collection canister constructed and arranged to be connected with a fuel tank to receive hydrocarbon vapors from the fuel tank, an intake manifold for drawing air into an internal combustion engine of the vehicle, and a turbocharger connected with the intake manifold to provide pressurized air to the engine, the module comprising:
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a purge valve having an inlet constructed and arranged to be connected to the vapor collection canister, and an outlet constructed and arranged to be connected to the intake manifold, a venturi nozzle constructed and arranged to receive pressurized air from the turbocharger, when the turbocharger is operating, to create a vacuum to draw vapors from the canister through the purge valve to an inlet of the turbocharger and the intake manifold to be purged in the engine, a first check valve to prevent pressure from the intake manifold from reaching the canister when the turbocharger is operating, and a second check valve to prevent vacuum pressure from the intake manifold from communicating with the venturi nozzle when the turbocharger is at idle, with vapor from the canister being drawn through the purge valve and the intake manifold to be purged in the engine, wherein the purge valve, venturi nozzle, first check valve, and second check valve are integrated into a single component. - View Dependent Claims (6, 7)
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8. A method of providing an evaporative emission management system for a vehicle, the vehicle having a vapor collection canister constructed and arranged to be connected with a fuel tank to receive hydrocarbon vapors from the fuel tank, an intake manifold for drawing air into an internal combustion engine of the vehicle, and a turbocharger connected with the intake manifold to provide pressurized air to the engine, the method comprising the steps of:
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providing a purge valve having an inlet constructed and arranged to be connected to the vapor collection canister, and an outlet constructed and arranged to be connected to the intake manifold;
a venturi nozzle constructed and arranged to receive pressurized air from the turbocharger, when the turbocharger is operating, to create a vacuum to draw vapors from the canister through the purge valve to an inlet of the turbocharger and the intake manifold to be purged in the engine;
a first check valve to prevent pressure from the intake manifold from reaching the canister when the turbocharger is operating; and
a second check valve to prevent vacuum pressure from the intake manifold from communicating with the venturi nozzle when the turbocharger is at idle, with vapor from the canister being drawn through the purge valve and the intake manifold to be purged in the engine, andintegrating the purge valve, the venturi nozzle, the first check valve, and the second check valve into a single component. - View Dependent Claims (9, 10)
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Specification