Diagnostic device for vehicle engine analysis
US5130930A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Aug 10, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vehicle engine diagnostic device equipped with a forcible load-controller for forcibly changing, during operation, the drive conditions of a desired one of a plurality of driven loads, such as fuel injectors. If that driven load is functioning normally, changing its drive conditions by the forcible load-controller causes the operating conditions of the associated control unit, i.e., of the main control section, to change accordingly; if that driven load or any of its associated devices are out of order, no change occurs in the operating conditions of the control unit. Thus, the diagnostic device makes it possible to diagnose even driven loads which are not equipped with sensors as well as the devices associated therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.