Patent · US Active

Method and apparatus for misfire detection using engine cycles at least subsequent to actual misfire event

US8046155B2 · kind B2 · utility

1Cited by
13References
13Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 13, 2009
Grant dateOct 25, 2011
Priority date—
Expiry dateMar 5, 2029

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF02D2200/1015
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

In a method of monitoring for a misfire event in an internal combustion engine signals representative of engine speed are monitored for successive engine revolutions subsequent to each firing event. The monitored signals are stored (e.g., in a buffer) and processed to detect changes in the monitored speed signals. Changes in monitored speed signals that are indicative of an actual misfire event are detected and a misfire count is changed in response thereto.

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