Engine cooling system
AssigneeVolvo Trucks North America, Inc.
InventorDennis Langervik
Life of this patent
Estimating the term…
Abstract
An improved cooling system for a turbo charged internal combustion engine is disclosed. A conduit connects a pressurizing engine air intake to the cooling system to raise the pressure in the cooling system thereby enabling an increase of the maximum temperature which coolant in the cooling system can reach.
Claims38
In a turbo charged engine, an improved cooling system comprising at least one conduit connecting a pressurized engine air intake to the cooling system whereby to raise the pressure in the cooling system and thereby enable an increase of the maximum temperature which coolant in the cooling system can reach.
In a vehicle having a turbo charged engine equipped with a cooling system, an arrangement for elevating the maximum temperature of coolant in the system, the arrangement comprising:
- a) an expansion tank forming a part of the system;
- b) the tank having a pressure relief and coolant overflow valve and a vacuum relief valve;
- c) the tank also having a check valve;
- d) a conduit connecting a pressurized air intake manifold of the engine to the check valve;
- and,
- e) a flow control valve in the conduit.
In a powered mechanism including a combustion engine having a liquid cooling system, an arrangement for elevating the available operating temperature of the engine comprising:
- a) a source of air under pressure;
- and,
- b) a conduit connecting the source to the system.
A process of improving engine performances with elevated operating temperatures comprising:
- a) delivering air under pressure in excess of ambient pressures from a pressurizing source to an engine cooling system;
- and,
- b) controlling the pressure in the system by delivering the pressurized air via a valve.
A process of improving the performance of a power plant in the form of a turbo charged diesel engine, the process comprising:
- a) coupling a cooling system of the engine to an engine intake manifold via a valved conduit;
- b) delivering air under pressure from the manifold to the system while maintaining pressure in the system via the conduit valve;
- and,
- c) maintaining pressure in the system at or below a predetermined maximum with a pressure relief valve coupled to the system.
Dependencies are inferred from the claim text.