Alternating current control apparatus and method for glow plugs
US5724932A · kind A · utility
18Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Oct 18, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P19/021
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In one aspect of the present invention, an apparatus for controlling the temperature of a plurality of glow plugs of a multi-cylinder internal combustion engine is disclosed. A voltage sensor produces a signal relative to the magnitude of the sensed voltage across a glow plug. A microprocessor compares the magnitude of the sensed signal with a preselected magnitude indicative of a predetermined temperature glow plug and responsively produces a current command signal. An alternator receives the current command signal and responsively delivers alternating current to the glow plugs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.