Process for heating the intake air internal combustion engines by means of a flame starting system
US5138987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A process and device for heating the intake air in internal-combustion engines by means of a flame starting system is disclosed which contains at least one heater plug and has a control unit which supplies the heater plug with voltage for a specific preheating time. To provide a process, by means of which the preheating temperature of the heater plug necessary for starting is safely reached independently of changing boundary conditions, it is proposed to carry out the following cyclically repeating steps: detection of the voltage available at the output of the control unit, determination of a preheating time, associated with this voltage value, for the heater plug, determination of a step value from the division of a predetermined standard value for the preheating time by the value determined for the preheating time, summing of the individual step values in a memory erased at the commencement of the process, and comparison of the memory content with predetermined standard value and termination of the preheating when the standard value is reached, or return to process step (a) as long as the standard value is not reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.