Engine cooling system flushing apparatus and method
AssigneeWynn Oil Company
InventorsJohn A. Babish, Larry K. Arnot, Douglas C. Appel
Life of this patent
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Abstract
An internal combustion engine cooling system is flushed by: (a) providing a controlled pressurized flow of flushing liquid and entrained gas bubbles, (b) and passing said flow alternately through (i) the radiator in a reverse direction, (ii) the engine coolant passages in a reverse direction, (iii) the radiator in a forward direction, (iv) the engine coolant passages in a forward direction.
Claims18
For combination with an internal combustion engine cooling system that includes a liquid coolant heat radiator and a liquid coolant pump, flushing apparatus comprising:
- (a) first means to produce a pressurized flow of flushing liquid and entrained gas bubbles,
- (b) a series of flow ports selectively connectible to different points in said system, utilizing appropriate adaptors and
- (c) control means operable to direct said flow from said first means and via said ports in four separate modes, identified as follows:
- (i) through the radiator in a reverse direction,
- (ii) through the engine coolant passages in a reverse direction,
- (iii) through the radiator in a forward direction
- (iv) through the engine coolant passages in a forward direction.
In combination with a vehicle internal combustion engine cooling system that includes a liquid coolant heat radiator and liquid coolant pump, flushing apparatus comprising
- (a) first means to combine a pressurized stream of air and a pressurized stream of water to produce a pressurized water flow containing air bubbles, and
- (b) second means connected between said first means and said system to controllably and selectively feed said flow to at least three different points of said system.
The method of flushing an internal combustion engine liquid cooling system, the system including a liquid coolant heat radiator and the engine having cooling passages, said method including
- (a) providing a controlled pressurized flow of flushing liquid and entrained gas bubbles,
- (b) and passing said flow alternately through
- (i) the radiator in a reverse direction, independently of the engine coolant passages,
- (ii) the engine coolant passages in a reverse direction, independently of the radiator,
- (iii) the radiator in a forward direction, independently of the engine coolant passages,
- (iv) the engine coolant passages in a forward direction, independently of the radiator.
Dependencies are inferred from the claim text.