Diagnostic method and apparatus for vehicle having communication disabling function at engine starting
US6067009A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a diagnostic method and apparatus for a vehicle, a transponder for performing a communication with an external receiver and an engine ECU are connected on a communication line. During a first inappropriate period in which noises are supposed to occur on the communication line due to engine starting or a second inappropriate period in which a processing load necessary for a control is supposed to be high when the engine speed is high or a load is high, even if there is a request for outputting abnormality information from the transponder, the engine ECU does not respond to the request. On the other hand, when it is not during the first and second inappropriate periods, the ECU responds to the output request from the transponder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.