A New Platinum Tipped Spark Plug Extends the Lean Misfire Limit and Useful Life Toyota Motor Corporation

Format:

Conference/Event

Author/Creator:

Nakamura, Norihiko, author.

Conference Name:

SAE International Congress & Exposition (1983-02-28 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1983

Summary:

Higher compression ratio and lower air-fuel ratio tend to raise the required break down voltage. Various types of electrode configurations were examined. It was found that a very thin platinum plate attached to each elect-rode was effective in reducing the electrode wear. This newly developed platinum tipped spark plug uses a small sized center electrode and an enlarged initial spark gap. The lean misfire limit and the torque fluctuation at partial load are improved with the platinum tipped spark plug. After a durability test, the break down voltage became lower due to the grained platinum surface. The spark gap was almost unchanged during an 80 thousand kilometer durability test run

Notes:

Vendor supplied data

Publisher Number:

830480

Access Restriction:

Restricted for use by site license