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US4668871: Auxiliary device driving starter motor

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Filing Information

Inventor(s) Mitsuharu Morishita · Kiyoshi Yabunaka ·
Assignee(s) Mitsubishi Denki Kabushiki Kaisha ·
Attorney/Agent(s) Oblon, Fisher, Spivak, McClelland & Maier ·
Primary Examiner Shoop, Jr.; William M. ·
Assistant Examiner Duncanson, Jr.; W. E. ·
Application Number US6664388
Filing date 10/24/1984
Issue date 05/26/1987
Predicted expiration date 10/24/2004
U.S. Classifications 290/36R  · 310/219  ·
International Classifications H02K 710  ·
Kind CodeA
International Classifications 29036 R;38 R;38 A;38 C;38 E;48 ·
Foreign Priority JP58203076 - 10/27/1983 ·
5 Claims, No Drawings


Abstract

In an auxiliary device driving motor, at least one of spring pressure to brushes and material of the brushes in contact with a commutator of said d.c. motor, an armature winding and a field winding is changed to obtain output characteristic in which current at non-load revolution is reduced and the engine is started within a high output region of the output characteristic while the auxiliary rotating machine is driven within a low power region.

Independent Claims | See all claims (5)

  1. 1. An auxiliary device driving starter motor comprising a d.c. motor for starting an engine, said d.c. motor having brushes and being adapted to start said engine by connecting its rotational force to said engine and to drive an auxiliary rotating machine without connecting the rotational force to said engine, wherein a spring pressure applied to said brushes is in a range from about 1.0 kg/cm.sup.2 to about 1.3 kg/cm.sup.2 to obtain an output characteristic in which current at non-load revolution is reduced and said engine is started within a high output region of said output characteristic while said auxiliary rotating machine is driven within a low power region.
  2. 2. An auxiliary device driving starter motor comprising a d.c. motor for starting an engine, said d.c. motor having brushes and being adapted to start said engine by connecting its rotational force to said engine and to drive an auxiliary rotating machine without connecting the rotational force to said engine, wherein said brushes are made of graphite in which molybdenum disulfide of about 6 wt. % to about 8 wt. % is incorporated to obtain an output characteristic in which current at non-load revolution is reduced and said engine is started within a high output region of said output characteristic while said auxiliary rotating machine is driven within a low power region.
  3. 3. An auxiliary device driving starter motor comprising a d.c. motor for starting an engine, said d.c. motor having brushes and being adapted to start said engine by connecting its rotational force to said engine and to drive an auxiliary rotating machine without connecting the rotational force to said engine, wherein a spring pressure applied to said brushes is in a range from about 1.0 kg/cm.sup.2 to about 1.3 kg/cm.sup.2 and said brushes are made of graphite in which molybdenum disulfide of about 6 wt. % to about 8 wt. % is incorporated to obtain an output characteristic in which current at non-load revolution is reduced and said engine is started within a high output region of said output characteristic while said auxiliary rotating machine is driven within a low power region.
  4. 4. An auxiliary device driving starter motor comprising a d.c. motor for starting an engine, said d.c. motor having at least one of an armature winding and a field winding and being adapted to start said engine by connecting its rotational force to said engine and to drive an auxiliary rotating machine without connecting the rotational force to said engine, wherein one of said armature winding and said field winding is formed of a wire having a larger diameter and has an increased number of turns to obtain an output characteristic in which current at non-load revolution is reduced and said engine is started within a high output region of said output characteristic while said auxiliary rotating machine is driven within a low power region.
  5. 5.5. An auxiliary device driving starter motor comprising a d.c. motor for starting an engine, said d.c. motor having a field winding being adapted to start said engine by connecting its rotational force to said engine and to drive an auxiliary rotating machine without connecting the rotational force to said engine, wherein said field winding has a coil of 10 turns for one magnetic pole to obtain an output characteristic in which current at non-load revolution is reduced and said engine is started within a high output region of said output characteristic while said auxiliary rotating machine is driven within a low power region.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US2403099 LEAR INC Lear Jul 1946
US3177368 CAV LTD Selly Apr 1965
US3463995 ACCUMULATEURS FIXES Herold Aug 1969
US3584229 LUCAS INDUSTRIES LTD West Jun 1971
US4241271 Westinghouse Electric Corp. Johnson et al. Dec 1980
US4517466 Mitsubishi Denki Kabushiki Kaisha Ogawa May 1985
US4559455 Mitsubishi Denki Kabushiki Kaisha Tanaka Dec 1985

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP0109216MITSUBISHI DENKI KABUSHIKI KAISHAOct 1983
DE3121058WABCO WESTINGHOUSE FAHRZEUGFeb 1964
GB1601606DU PONTMay 1977
GB2041677BOSCH GMBH ROBERTSep 1979
GB2081992NISSAN MOTORAug 1980

Referenced By

The current document is not referenced by other documents.