System and method for cooling a turbocharger
First Claim
1. A vehicle comprising:
- a turbocharger for compressing a flow of combustion air;
an intercooler cooling fluid circuit circulating a flow of cooling fluid therethrough, the intercooler cooling fluid circuit including;
a low temperature heat exchanger configured for transferring heat from the flow of cooling fluid to a flow of ambient air;
an intercooler pump configured for circulating the flow of cooling fluid through the intercooler cooling fluid circuit; and
an intercooler configured for transferring heat from the flow of compressed combustion air to the flow of cooling fluid;
a first fluid passage in fluid communication with the intercooler cooling fluid circuit and the turbocharger; and
a turbocharger cooling control valve interconnecting the first fluid passage and the intercooler cooling fluid circuit, the turbocharger cooling control valve disposed downstream of the low temperature heat exchanger and upstream of the intercooler, and moveable between a first position directing the flow of cooling fluid to the intercooler to absorb heat from the flow of combustion air, and a second position directing the flow of cooling fluid to the turbocharger to cool the turbocharger.
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Accused Products
Abstract
A vehicle includes an intercooler cooling fluid circuit coupled to and in fluid communication with a turbocharger of an internal combustion engine for circulating a flow of cooling fluid to the turbocharger to cool the turbocharger. A turbocharger cooling control valve controls fluid flow between the turbocharger and an intercooler. The turbocharger cooling control valve directs the flow of the cooling fluid to the intercooler when the engine is running, directs the flow of cooling fluid to the turbocharger when the engine is not running. The vehicle uses an intercooler pump for circulating the cooling fluid to both the intercooler when the vehicle is running and the turbocharger when the vehicle is not running.
26 Citations
19 Claims
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1. A vehicle comprising:
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a turbocharger for compressing a flow of combustion air; an intercooler cooling fluid circuit circulating a flow of cooling fluid therethrough, the intercooler cooling fluid circuit including; a low temperature heat exchanger configured for transferring heat from the flow of cooling fluid to a flow of ambient air; an intercooler pump configured for circulating the flow of cooling fluid through the intercooler cooling fluid circuit; and an intercooler configured for transferring heat from the flow of compressed combustion air to the flow of cooling fluid; a first fluid passage in fluid communication with the intercooler cooling fluid circuit and the turbocharger; and a turbocharger cooling control valve interconnecting the first fluid passage and the intercooler cooling fluid circuit, the turbocharger cooling control valve disposed downstream of the low temperature heat exchanger and upstream of the intercooler, and moveable between a first position directing the flow of cooling fluid to the intercooler to absorb heat from the flow of combustion air, and a second position directing the flow of cooling fluid to the turbocharger to cool the turbocharger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of cooling a turbocharger for an internal combustion engine system having an intercooler, a low temperature heat exchanger configured for transferring heat from a flow of cooling fluid to a flow of ambient air;
- a turbocharger cooling control valve being disposed within a first fluid passage and positioned downstream of the low temperature heat exchanger and upstream of the intercooler, the method comprising;
determining an operating status of the internal combustion engine; wherein the operating status of the internal combustion engine is on, directing the flow of the cooling fluid circulating through the intercooler cooling fluid circuit through the intercooler to remove heat from the flow of compressed combustion air when the internal combustion engine is operating in the engine on status; and wherein the operating status of the internal combustion engine is switched from the engine on status to the engine off status, controlling the turbocharger cooling control valve; and re-directing the flow of the cooling fluid circulating through the intercooler cooling fluid circuit to the turbocharger to cool the turbocharger. - View Dependent Claims (15, 16, 17, 18, 19)
- a turbocharger cooling control valve being disposed within a first fluid passage and positioned downstream of the low temperature heat exchanger and upstream of the intercooler, the method comprising;
Specification