Twin-flow cooling system

Patent · Tue Nov 04 00:00:00 EST 1986

OSTI ID:7241894

Crofts, J G

This patent describes a twin flow cooling system for an internal combustion engine. The system comprises a common source of liquid coolant, a pump having an intake side communicating with the source for circulating the coolant throughout the system; and an engine unit having a cooling jacket connected to a discharge side of the pump. The system also has a thermostatically controlled primary valve downstream of the engine unit and having an inlet port communicating therewith and a radiator downstream of the primary valve. The radiator has a common inlet header and an outlet header having segregated segments, the radiator inlet header being connected to a first outlet port of the primary valve. The system includes a first bypass line having an upstream end connected to a second outlet port of the primary valve, and a thermostatically controlled secondary valve having a first inlet port connected to a downstream end of a second bypass line, an upstream end of the second bypass line communicating with the inlet port of the primary valve. The secondary valve has a second inlet port connected to one segment of the radiator outlet header and an outlet port communicating with the intake side of the pump.

• Assignee: Cummins Engine Co., Inc., Columbus, IN
• Patent Number(s): US 4620509
• OSTI ID: 7241894
• Resource Relation: Patent File Date: Filed date 5 Aug 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
COOLING SYSTEMS
COOLANTS
INTAKE STRUCTURES
PUMPS
RADIATORS
TEMPERATURE EFFECTS
THERMOSTATS
VALVES
CONTROL EQUIPMENT
ENERGY SYSTEMS
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
HEAT EXCHANGERS
MECHANICAL STRUCTURES
330100* - Internal Combustion Engines