Engine cooling system, electronic thermostat control system and control method for the same
US10400661B2 · kind B2 · utility
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2References
2Claims
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Key dates
| Filing date | Jul 26, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Oct 9, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/303
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic thermostat control system may include a control duty determination portion outputting PWM duty signal for controlling the coolant temperature according to a coolant temperature, a rising rate of the coolant temperature, an engine speed, a load and a vehicle speed, a driving portion applying a time condition to the PWM duty signal output by the control duty determination portion for controlling outputting interval, and a fault diagnosis portion diagnosing operations of the electronic thermostat by analyzing the signals output by the driving portion and changes of the coolant temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.