Title:
DISTRIBUTING TYPE FUEL INJECTION PUMP
Document Type and Number:
Japanese Patent JP3859034
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a distributing type fuel injection pump capable of easily and securely preventing an excessive fuel injection due to a full close trouble of a spill solenoid valve.
SOLUTION: A distributing type fuel injection pump is formed so that a fuel feed stop member 50 is arranged between an suction port 33 and a suction path 34 and a spill pressure produced inside the suction port 33 is utilized so as to prevent a communication between the suction port 33 and suction path 34 when the spill solenoid valve is under full close trouble. By this, an excessive fuel injection can be prevented easily and securely, and also the overrunning of a diesel, engine can be prevented. Also the fuel feed stop member 50 comprises a pump housing 11, a piston 54, an O-ring 53, and a plug 55. Because the structure is simple, designing is made easier, and man-hour for assembly can be reduced so as to provide an inexpensive fuel injection pump. In addition, because an annular groove 52a communicated with a piston path 52 is formed on the outer periphery of the piston 54, fuel is sucked into a pressurizing chamber 13 stably.
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Inventors:
Tatsuya Ichikawa
Toshiki Yada
Toshiki Yada
Application Number:
JP21320097A
Publication Date:
December 20, 2006
Filing Date:
August 07, 1997
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D1/02; F02M41/12; F02D17/04; F02D41/38; (IPC1-7): F02M41/12; F02M41/12; F02D1/02; F02D17/04; F02D41/38
Domestic Patent References:
| JP64019164A | ||||
| JP57193061U | ||||
| JP4503101A | ||||
| JP7034996A |
Attorney, Agent or Firm:
Masaki Hattori