System and method for cooling an engine
AssigneeHyundai Motor Company
InventorGyu-Hwan Kim
Life of this patent
Estimating the term…
Abstract
An engine is provided having a cylinder head and a cylinder block. The cylinder head has a head water-jacket for circulating coolant, and the cylinder block has a block water-jacket for circulating the coolant. Coolant flow is blocked between the block and head water-jackets except through a primary pathway or an additional one or more secondary pathways. First and second thermostats are equipped to respectively control coolant flow from the head and block water-jackets, such that the coolant flow through the head and block water-jackets are respectively controlled based on respectively preset temperatures of the first and second thermostats.
Claims13
A cooling system of an engine including a cylinder head and a cylinder block, the cylinder head having a head water-jacket for circulating coolant and the cylinder block having a block water-jacket for circulating coolant, the cooling system comprising:
- a radiator for cooling the coolant;
- a high-temperature coolant line for supplying the coolant from the head water-jacket to the radiator;
- a low-temperature coolant line for supplying the coolant from the radiator to at least one of the head and block water-jackets;
- a first thermostat disposed at a predetermined position in one of the low-temperature coolant line and the high-temperature coolant line;
- a branch coolant line for supplying the coolant from the block water-jacket to the high-temperature coolant line;
- a second thermostat disposed in the branch coolant line;
- and
- a hydraulic pump for generating coolant flow in the high-temperature and low-temperature coolant lines,
- wherein the head and block water-jackets communicate with each other by a primary pathway for transporting the coolant therebetween, and coolant flow is blocked within a cylinder-region, the cylinder region being defined as a region between the primary pathway and the branch coolant line.
A cooling method of an engine including a cylinder head and a cylinder block, the cylinder head having a head water-jacket for circulating coolant and the cylinder block having a block water-jacket for circulating the coolant, the cooling method comprising:
- determining if a coolant temperature in the head water-jacket is above a first predetermined temperature;
- supplying the coolant in the head water-jacket to a radiator when the coolant temperature in the head water-jacket is above the first predetermined temperature;
- determining if a coolant temperature in the block water-jacket is above a second predetermined temperature;
- and
- supplying the coolant in the block water-jacket to a radiator when the coolant temperature in the block water-jacket is above the second predetermined temperature.
Dependencies are inferred from the claim text.