Title:
FUEL PUMP AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3638056
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel pump whose fuel discharge quantity can be regulated through a simple method and its manufacturing method.
SOLUTION: The thickness of a housing 11 is set up so that in a state where an auxiliary housing 50 is not attached, the magnetic circuit of a motor section 30 may be magnetically saturated in the housing 11. The fuel discharge quantity of the fuel pump 10 is measured in the state where the auxiliary housing 50 is not attached, and this measurement value is compared with the required discharge quantity, and the auxiliary housing 50 whose plate thickness is selected so as to approach the desired discharge quantity is attached to the outer periphery of the housing 11 to increase the thickness of the whole of the housing for increasing effective magnetic fluxes &phiv and lowering the number of revolutions N. As a result, the fuel discharge quantity of the fuel pump 10 excessive in comparison with the required discharge quantity decreases. Thus since the consumed electric power of the fuel pump 10 can be reduced, and the quantity of fuel returned to the fuel tank decreases, the vapor generation of the fuel can be controlled.
Inventors:
Motoya Ito
Ken Matsuda
Ken Matsuda
Application Number:
JP12606496A
Publication Date:
April 13, 2005
Filing Date:
May 21, 1996
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02M37/08; F04B17/03; F04C15/00; F04D5/00; F04D13/06; F04D15/00; F04D23/00; (IPC1-7): F04D5/00; F02M37/08
Attorney, Agent or Firm:
Masaki Hattori