Method and apparatus for preventing stall in a starter/alternator equipped I.C. engine system
US6825576B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Aug 15, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for preserving a starter/alternator in an I.C. engine system installation from repeated operation in the starter mode by detecting and preventing an I.C. engine stall by disabling the generator function of the starter/alternator. The system describes a method of comparing the detected rotational speed of the starter/alternator in generator mode with a reference rotational incipient stall speed of the system I.C. engine. If the I.C. engine speed falls below a threshold stall speed, the generator function of the starter/alternator is disabled. In addition, a second detected speed of the I.C. engine is detected following the disabling of the generator function to determine if the I.C. engine has resumed an engine speed above a second threshold speed, whereupon the generating function is restored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.