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US 7,743,651 B2Granted
Method for detecting malfunction of a cooling system based on detected coolant temperature
AssigneeDenso Corporation
InventorsKeiji Wakahara, Akira Ichikawa
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Abstract
A method for detecting a malfunction of a cooling system of an internal combustion engine, comprising: detecting a coolant temperature on a side of the engine; determining a malfunction of the cooling system with the coolant temperature and the value only after a cold start of the engine.
Claims2
A method for detecting a malfunction of a cooling system of an internal combustion engine, comprising:
- detecting a coolant temperature on the engine side of the thermostat;
- detecting an engine operation condition;
- detecting an ambient temperature outside a vehicle;
- and
- detecting a malfunction of the thermostat after a cold start of the engine based on the coolant temperature, the engine operation condition, and the ambient temperature.
2 more elements
Dependencies are inferred from the claim text.