Coolant control systems and methods to prevent over temperature
First Claim
1. A coolant control system of a vehicle, comprising:
- a difference module configured to;
determine a block temperature difference based on a difference between a reference block temperature and a block temperature of an engine block measured using a block temperature sensor;
determine a head temperature difference based on a difference between a reference head temperature and a head temperature of a cylinder head of the engine measured using a head temperature sensor; and
determine a coolant outlet temperature difference based on a difference between a reference coolant outlet temperature and a temperature of coolant output from at least one of the engine block and the cylinder head measured using a coolant outlet temperature sensor;
an opening module configured to determine a coolant valve (CV) opening for a CV, a flow control valve (FCV) opening for a FCV, and a block valve (BV) opening for a BV based on at least one of the block temperature difference, the head temperature difference, and the coolant outlet temperature difference;
a CV control module configured to selectively actuate the CV based on the CV opening, wherein the CV regulates coolant flow from the FCV to (i) a radiator and (ii) a coolant channel bypassing the radiator before the coolant flows back the engine;
a BV control module configured to selectively actuate the BV based on the BV opening, wherein the BV regulates coolant flow from the engine block to the FCV; and
a FCV control module configured to selectively actuate the FCV based on the FCV opening, wherein the FCV regulates coolant flow from the cylinder head and the BV to the CV.
1 Assignment
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Accused Products
Abstract
A coolant control system of a vehicle includes an opening module configured to determine a coolant valve (CV) opening, a flow control valve (FCV) opening, and a block valve (BV) opening based on at least one of a block temperature difference, a head temperature difference, and a coolant outlet temperature difference. A CV control module is configured to selectively actuate a CV based on the CV opening. The CV regulates coolant flow from the FCV to a radiator and a coolant channel bypassing the radiator. A BV control module is configured to selectively actuate a BV based on the BV opening. The BV regulates coolant flow from the engine block to the FCV. A FCV control module is configured to selectively actuate a FCV based on the FCV opening. The FCV regulates coolant flow from the cylinder head and the BV to the CV.
4 Citations
20 Claims
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1. A coolant control system of a vehicle, comprising:
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a difference module configured to; determine a block temperature difference based on a difference between a reference block temperature and a block temperature of an engine block measured using a block temperature sensor; determine a head temperature difference based on a difference between a reference head temperature and a head temperature of a cylinder head of the engine measured using a head temperature sensor; and determine a coolant outlet temperature difference based on a difference between a reference coolant outlet temperature and a temperature of coolant output from at least one of the engine block and the cylinder head measured using a coolant outlet temperature sensor; an opening module configured to determine a coolant valve (CV) opening for a CV, a flow control valve (FCV) opening for a FCV, and a block valve (BV) opening for a BV based on at least one of the block temperature difference, the head temperature difference, and the coolant outlet temperature difference; a CV control module configured to selectively actuate the CV based on the CV opening, wherein the CV regulates coolant flow from the FCV to (i) a radiator and (ii) a coolant channel bypassing the radiator before the coolant flows back the engine; a BV control module configured to selectively actuate the BV based on the BV opening, wherein the BV regulates coolant flow from the engine block to the FCV; and a FCV control module configured to selectively actuate the FCV based on the FCV opening, wherein the FCV regulates coolant flow from the cylinder head and the BV to the CV. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A coolant control method of a vehicle, comprising:
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determining a block temperature difference based on a difference between a reference block temperature and a block temperature of an engine block measured using a block temperature sensor; determining a head temperature difference based on a difference between a reference head temperature and a head temperature of a cylinder head of the engine measured using a head temperature sensor; determining a coolant outlet temperature difference based on a difference between a reference coolant outlet temperature and a temperature of coolant output from at least one of the engine block and the cylinder head measured using a coolant outlet temperature sensor; determining a coolant valve (CV) opening for a CV, a flow control valve (FCV) opening for a FCV, and a block valve (BV) opening for a BV based on at least one of the block temperature difference, the head temperature difference, and the coolant outlet temperature difference; selectively actuating the CV based on the CV opening, wherein the CV regulates coolant flow from the FCV to (i) a radiator and (ii) a coolant channel bypassing the radiator before the coolant flows back the engine; selectively actuating the BV based on the BV opening, wherein the BV regulates coolant flow from the engine block to the FCV; and selectively actuating the FCV based on the FCV opening, wherein the FCV regulates coolant flow from the cylinder head and the BV to the CV. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification