Patent · US Expired

Electronic ignition control method and apparatus

US4225925A · kind A · utility

16Cited by
7References
12Claims
0Family size

Assignees

Inventors

Key dates

Filing dateMar 24, 1978
Grant dateSep 30, 1980
Priority date
Expiry dateMar 24, 1998

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02T10/40
  • WIPO fieldEngines, pumps, turbines
  • WIPO sectorMechanical engineering

Abstract

To determine an optimum advance angle for activation of a spark plug in relation to an amount of air sucked into an engine, an electronic ignition control method and apparatus comprises a calculation circuit to calculate a linear equation representing a relationship between the optimum advance angle of activation of the spark plug and the amount of the sucked air in consideration with rotation speed of an output shaft of the engine, thereby to simplify the calculation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.