Method for diagnosing lack of coolant supplied to coolant pump of vehicle
US10969181B2 · kind B2 · utility
0Cited by
1References
17Claims
0Family size
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Key dates
| Filing date | Jul 6, 2018 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Jun 10, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for diagnosing a lack of coolant includes: (a) determining whether a target revolution per minute (RPM) of a coolant pump is set to be constantly maintained for a first time, which is preset, or more, (b) calculating an actual average RPM and an actual average driving current of the coolant pump for a second time, which is preset to be shorter than the first time, when the target RPM is set to be constantly maintained for the first time, and (c) determining whether the coolant to be supplied to the coolant pump is insufficient, based on the actual average RPM and the actual average driving current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.