Method for controlling the temperature of a glow plug
US9329604B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Sep 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/2401
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for closed-loop control of the surface temperature of a glow plug. A heating current flowing through the glow plug and a voltage applied to the glow plug are measured, and a calculation rule is used, which assigns a value of the surface temperature to a value pair formed of a value of the heating current and a value of the voltage. The calculation rule takes into account the influence of a changing temperature of a feed line of the heating resistor on the relationship between the heating current measured at a given voltage and the surface temperature of the glow plug. Also disclosed is a method for controlling the surface temperature of a glow plug, in which a factor of the control algorithm is calculated by using a correction term, which takes into account the heat dissipation from a glow tip to cooler parts of the glow plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.