Test apparatus for testing internal combustion engine electronic spark ignition systems
US4331921A · kind A · utility
6Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | May 21, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P17/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A test apparatus for testing electronic ignition systems includes a circuit for detecting the interruption of ignition coil primary current and triggering a 100 .mu.S monostable. A coil current detector detects when coil current flow is recommenced and the signals from this detector and the monostable are combined via a gate to indicate satisfactory operation if the detector detects current re-commencement within 100 .mu.S of the previous current interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.