Patent · US Expired

Ignition system and spark plug for multiple ignition in an internal combustion engine

US5101783A · kind A · utility

1Cited by

6References

36Claims

0Family size

Assignee

Didier-Werke AG · DE

Inventors

Martin Car · Großenhausen, DE
Erich Pohlmann · Kulmbach, DE

Key dates

Filing date	Feb 4, 1991
Grant date	Apr 7, 1992
Priority date	—
Expiry date	Feb 4, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH01T13/16
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An ignition system in an internal combustion engine having a cylinder housing with an air or water cooled region achieves multiple ignition. The ignition system includes at least a pair of spark plugs electrically connected in series and including a first spark plug mounted in the cylinder housing while being isolated electrically therefrom and a second spark plug directly screwed into a cylinder head of the cylinder housing. The first spark plug is mounted within the air or water cooled region of the cylinder housing, thereby maintaining such spark plug at a relatively constant temperature, and avoiding the problem of the two spark plugs being subjected to different thermal stresses.

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