Method of protection and fault detection for starter/alternator operating in the starter mode
US6800952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Apr 23, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02N2200/041
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system of preserving a starter/alternator in an I.C. engine system installation from excessive operation in the starter mode is disclosed. The system describes a method of comparing the respective rotational speeds of the starter/alternator and I.C. engine in starter mode first to each other and then, if the same, to a predetermined threshold speed. If an overspeed condition is detected, disabling the starter/alternator in starter mode. In addition, if a predetermined number of I.C. engine start sequences have occurred without successful I.C. engine operation, the starter mode is disabled for a predetermined period of time. If several start failures have been detected, the starter/alternator can be disabled until a repair of the I.C. engine fault can be made. Where the respective rotational speeds of the starter/alternator and I.C. engine differ, the system controller follows a series of logic steps to determine the fault and thereafter either notify the system controller and/or disable the starter/alternator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.