Back to results
US 2014/0103847 A1Published application
Cooling apparatus for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsNobuki Kawamoto, Yasuki Hashimoto, Hiroshi Yamamoto
Life of this patent
Estimating the term…
Abstract
A cooling apparatus for an internal combustion engine includes a fan that cools a coolant by operating at least at a first drive voltage and a second drive voltage higher than the first drive voltage; and a control unit that drives the fan at the first drive voltage when a vehicle is driven at a low vehicle speed that is a vehicle speed lower than a vehicle speed threshold and a coolant temperature is higher than a fan low-voltage activation threshold.
Claims12
A cooling apparatus for an internal combustion engine, comprising:
- a fan that cools a coolant by operating at least at a first drive voltage and a second drive voltage higher than the first drive voltage;
- and
- a control unit that drives the fan at the first drive voltage when a vehicle is driven at a low vehicle speed that is lower than a vehicle speed threshold and a coolant temperature is higher than a fan low-voltage activation threshold, wherein the control unit drives the fan at the second drive voltage when the coolant temperature does not become lower than a fan stop threshold after the fan is started at the first drive voltage.
(canceled)
(canceled)
Dependencies are inferred from the claim text.