A study of commutation arc of DC motor for automotive fuel pump

Author

Sawa, K. ; Shimoda, N.

Author_Institution

Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan

fYear

1991

fDate

6-9 Oct. 1991

Firstpage

159

Lastpage

163

Abstract

Many small DC motors are used for automotive electrical equipment. In particular, motors for fuel pumps play the important role of supplying the engine with gasoline. In these motors commutation is done in gasoline. A new test apparatus has been developed for the investigation of commutation phenomena in gasoline. The duration of the commutation arc in gasoline was found to be shorter by about 30 approximately 50% than in air, in cases of both Cu and Ag/Ni. The value of the residual current of commutation in gasoline is generally smaller than in air. The arc duration is proportional to the residual current, and the slope in gasoline is smaller than in air. It is caused by the difference of the arc voltage. The carbon adhesion on the commutator surface in gasoline is much less than in air.<>

Keywords

DC motors; arcs (electric); automobiles; commutation; small electric machines; AgNi contact; C adhesion; Cu contacts; DC motor; arc duration; arc voltage; automotive fuel pump; commutation arc; commutation in gasoline; residual current; Automotive engineering; Brushes; Circuit testing; Commutation; Current measurement; DC motors; Engines; Fuel pumps; Induction motors; Petroleum;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Contacts, 1991. Proceedings of the Thirty-Seventh IEEE Holm Conference on

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0231-1

Type

conf

DOI

10.1109/HOLM.1991.170819

Filename

170819