Air flow rate measuring apparatus
US8695409B2 · kind B2 · utility
3Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Aug 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F5/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air flow rate measuring apparatus includes a heater and a control circuit. The heater heats a part of an intake air sucked into an engine. The control circuit controls an energization of the heater. The heater has a measuring-mode temperature when a flow rate of the intake air is measured. The control circuit has a heat cleaner which temporarily raises a temperature of the heater higher than the measuring-mode temperature when an energization of the air flow rate measuring apparatus is started.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.