Method and apparatus for determining the timing angle in internal combustion engines
US3939397A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1973 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jun 1, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/62
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This application discloses a method and apparatus for measuring and/or adjusting the timing angle of internal combustion engines. The method of measuring the timing angle comprises the steps of running the engine and producing voltage pulsations of uniform time frequency against which are simultaneously taken measurements of two values: first, the measurements of engine speed by counting the number of pulsations for one full and precise revolution of the engine from top dead center to top dead center of one selected cylinder, and simultaneously counting the number of pulsations from the moment the spark plug of the selected cylinder fires to the top dead center (for advanced firing), or from the top dead center to the moment of firing of the spark plug (for retarded firing). Counting two of such values enables the testing personnel to express the timing angle in degrees and to have the RPM of the engine at the time of testing, neither of which would be available if only one of such two values was measured. The disclosed test apparatus also provides a mechanism responsive to such measurements, which mechanism gives a readout of the revealed timing angle and compares it with the set …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.