Heater energization control device
US11313304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2021 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Apr 21, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/501
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas sensor is provided in an exhaust passage of an engine mounted on a vehicle. The gas sensor includes a sensor element and a heater. The sensor element detects a concentration of a specific component in exhaust gas. The heater is energized with electricity from a power source to heat the sensor element. The heater energization control device controls an amount of electricity supplied to the heater. An ambient temperature acquisition unit acquires an ambient temperature, which is a temperature of an environment surrounding the engine. An energization control unit controls the amount of electricity supplied to the heater based on the ambient temperature in temperature raising energization in which a temperature of the sensor element is raised to an active temperature when the engine is started.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.