Engine cooling fan coupling system controlled in concert with a cooling system thermostat
A cooling fan coupling system is described for an engine for an automotive vehicle, the engine comprising a rotating member and a coolant circulation system comprising a coolant radiator, a cooling fan for propelling air past the radiator to cool the coolant radiator, and a thermostatic valve for controlling flow of coolant through the coolant radiator. The thermostatic valve is constituted to start to open at a first determinate coolant temperature value, to be fully opened at a second determinate coolant temperature value, and to be partly opened at a third determinate coolant temperature value and the second determinate coolant temperature value and the second determinate coolant temperature value.
- Assignee:
- Toyota Jidosha Kabushiki Kaisha, Toyota and Aisin Seiki Kabushiki Kaisha, Kariya
- Patent Number(s):
- US 4687132
- OSTI ID:
- 6098294
- Resource Relation:
- Patent File Date: Filed date 9 Apr 1986
- Country of Publication:
- United States
- Language:
- English
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